MPL3115A2 Datasheet by NXP USA Inc.

View All Related Products | Download PDF Datasheet
absolute pressure sensor with an I 0 ing range of 20 kPa to 110 kF‘a, a ra MEMS is temperature compensated ssure and temperature data is fed ed and digitized outputs for press ed pressure output can then be Section 8.1.3 "Pressure/altitude"
MPL3115A2
I2C precision pressure sensor with altimetry
Rev. 5.1 — 13 September 2016 Data sheet: Technical data
1 General description
The MPL3115A2 is a compact, piezoresistive, absolute pressure sensor with an I2C
digital interface. MPL3115A2 has a wide operating range of 20 kPa to 110 kPa, a range
that covers all surface elevations on earth. The MEMS is temperature compensated
utilizing an on-chip temperature sensor. The pressure and temperature data is fed into
a high resolution ADC to provide fully compensated and digitized outputs for pressure
in Pascals and temperature in °C. The compensated pressure output can then be
converted to altitude, utilizing the formula stated in Section 8.1.3 "Pressure/altitude"
provided in meters.The internal processing in MPL3115A2 removes compensation and
unit conversion load from the system MCU, simplifying system design.
MPL3115A2's advanced ASIC has multiple user programmable modes such as power
saving, interrupt and autonomous data acquisition modes, including programmed
acquisition cycle timing, and poll-only modes. Typical active supply current is 40 μA per
measurement-second for a stable 10 cm output resolution.
2 Features and benefits
Operating range: 20 kPa to 110 kPa absolute pressure
–700 m to be equivalent altitude at 50 kPa
Calibrated range: 50 kPa to 110 kPa absolute pressure
Calibrated temperature output: −40 °C to 85 °C
I2C digital output interface (up to 400 kHz)
Fully compensated internally
Precision ADC resulting in 0.1 meter of effective resolution
Direct reading
Pressure: 20-bit measurement (Pascals)
20 to 110 kPa
Altitude: 20-bit measurement (meters)
–698 to 11,775 m
Temperature: 12-bit measurement (°C)
–40 °C to 85 °C
Programmable interrupts
Autonomous data acquisition
Embedded 32-sample FIFO
Data logging up to 12 days using the FIFO
One-second to nine-hour data acquisition rate
1.95 V to 3.6 V supply voltage, internally regulated
1.6 V to 3.6 V digital interface supply voltage
Operating temperature from −40 °C to +85 °C
MPL3115A2 Table 1. Orderlng lnformatlon Pressure and Temperature Sensor DI Ital SI | , _ g gna _ MUX Gain AAF \ ADC Processing SDL Digital sc|_ Interface INT1 |NT2 Sansnr Configuration and Output Data Registers GND CAP vDD vao
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
2 / 50
3 Applications
High-accuracy altimetry and barometry
Smartphones, tablets and wearable devices
GPS applications: dead reckoning, map assist, navigation, enhancement for
emergency services
Weather station equipment
4 Ordering information
Table 1. Ordering information
Number of ports Pressure TypeDevice number Shipping Package
None Single Dual Gauge Differential Absolute
Digital
interface
MPL3115A2 Tray 98ASA002260D ● — — —
MPL3115A2R1 Tape and reel 98ASA002260D
5 Block diagram
Figure 1. Block diagram
MPL3115A2 T: m m m m m m m Transparent top vlew ov ak HF
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
3 / 50
6 Pinning information
6.1 Pinning
VDD
CAP
GND
VDDIO
SDL
SCL
INT1
INT2
MPL3115A2
Transparent top view
1
2
3
45
6
7
8
Figure 2. 8-pin LGA pinout
6.2 Pin description
Table 2. Pin description
Symbol Pin Description
VDD 1 VDD power supply connection (1.95 to 3.6 V)
CAP 2 External capacitor
GND 3 Ground
VDDIO 4 Digital interface power supply (1.62 to 3.6 V)
INT2 5 Pressure interrupt 2
INT1 6 Pressure interrupt 1
SDL 7 I2C serial data
SCL 8 I2C serial clock
7 System connections
SDL
SCL
INT1
INT2
VDDIO
VDD
100nF 10μF
100nF
1
2
3
4
8
7
6
5
MPL3115A2
Figure 3. Typical application diagram
MPL3115A2 erm offset shift can be removed by adjusting Section 13.23 "Offser correction registers"
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
4 / 50
The device power is supplied through the VDD line. Power supply decoupling capacitors
(100 nF ceramic plus 10 μF bulk or 10 μF ceramic) should be placed as near as possible
to pin 1 of the device. A second 100 nF capacitor is used to bypass the internal regulator.
The functions, threshold and the timing of the interrupt pins (INT1 and INT2) are user
programmable through the I2C interface.
8 Mechanical and electrical specifications
8.1 Terminology
8.1.1 Resolution
The resolution of a pressure sensor is the minimum change of pressure that can be
reliably measured. The usable resolution of the device is programmable, enabling the
user to choose a compromise between acquisition speed, power consumption, and
resolution that best fits the application. To simplify the programming, the data is always
reported in the same format with differing number of usable bits.
8.1.2 Accuracy
8.1.2.1 Offset
The offset is defined as the output signal obtained when the reference pressure
(a vacuum for an absolute pressure sensor) is applied to the sensor. Offset error
affects absolute pressure measurements but not relative pressure measurements. An
altitude measurement is the pressure value in comparison to sea level, a barometric
measurement is the pressure value read by the sensor. That is, a measurement of total
pressure seen (for example 70 kPa), or total height (for example 3000 m) above sea
level. A change in the offset will affect the pressure value or height seen above sea level
as it shifts the sea level base reference. An absolute pressure measurement is not the
same as relative pressure measurement, where the pressure is compared when raising
or lowering pressure in shorter intervals. This would be a walk up a hill, measuring the
pressure and altitude difference from start to finish. In the relative case, the offset shifts
are shared in the two absolute measurements and negate each other during the pressure
calculation.
For the MPL3115A2, the long term offset shift can be removed by adjusting the pressure
or altitude offset correction. See Section 13.23 "Offset correction registers".This
adjustment is provided to override the factory programmed values to compensate for
offsets introduced by manufacturing and mounting stresses. It is highly recommended
that this is utilized to realize the full accuracy potential of the device.
8.1.2.2 Linearity
Linearity compares the slope of the measurement data to that of an ideal
transfer function. It refers to how well a transducer's output follows the equation
POUT = POFF + sensitivity P straight-line equation over the operating pressure range.
The method used by NXP to give the linearity specification is the end-point straight line
method measured at midrange pressure.
MPL3115A2 p 0 1902532 h = 44330.77 {1 , (—) }+ 0FF_H (Register value) Po
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
5 / 50
8.1.2.3 Absolute pressure
Absolute pressure sensors measure an external pressure relative to a zero-
pressure reference (vacuum) sealed inside the reference chamber of the die during
manufacturing. This standard allows comparison to a standard value set such that
14.7 psi = 101,325 Pa = 1 atm at sea level as a measurement target. The absolute
pressure is used to determine altitude as it has a constant reference for comparison.
Measurement at sea level can be compared to measurement at a mountain summit as
they use the same vacuum reference. The conversion of absolute pressure to altitude in
meters is calculated based on US Standard Atmosphere 1976 (NASA).
Note: Absolute pressure is not linear in relation to altitude, it is an exponential function.
The value of altitude can be read directly from the device in increments of 0.0625 meters,
or the value of pressure in 0.25 Pascal (Pa) units.
8.1.2.4 Span
Span is the value of full-scale output with offset subtracted, representing the full range
of the pressure sensor. Ideally the span is a specification over a constant temperature.
The device uses internal temperature compensation to remove drift. Span accuracy is
the comparison of the measured difference and the actual difference between the highest
and lowest pressures in the specified range.
8.1.3 Pressure/altitude
The device is a high accuracy pressure sensor with integrated data calculation and
logging capabilities. To provide altitude readings, the altitude calculations are based
on the measured pressure (p), the user input of the equivalent sea level pressure to
compensate for local weather conditions (OFF_H) and the US Standard Atmosphere
1976 (NASA). Pressure is given in Pascals (Pa), and fractions of a Pa. Altitude is given
in meters (m) and fractions of a meter. The altitude is calculated from the pressure using
the following equation:
where:
p0 = sea level pressure (101,326 Pa)
h = altitude in meters
8.2 Absolute maximum ratings
Absolute maximum ratings are the limits the device can be exposed to without
permanently damaging it. Absolute maximum ratings are stress ratings only, functional
operation at these ratings is not guaranteed. Exposure to absolute maximum ratings
conditions for extended periods may affect device reliability.
This device contains circuitry to protect against damage due to high static voltage
or electrical fields. It is advised, however, that normal precautions be taken to avoid
application of any voltages higher than maximum-rated voltages to this high-impedance
circuit.
MPL3115A2 Table 3. Maximum ratings Table 4. ESD and latchup protection characteristics mam
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
6 / 50
Table 3. Maximum ratings
Symbol Characteristic Value Unit
Pmax Maximum applied pressure 500 kPa
VDD Supply voltage −0.3 to 3.6 V
VDDIO Interface supply voltage −0.3 to 3.6 V
VIN Input voltage on any control pin (SCL, SDA) −0.3 to VDDIO + 0.3 V
TOP Operating temperature range −40 to +85 °C
TSTG Storage temperature range −40 to +125 °C
Table 4. ESD and latchup protection characteristics
Symbol Rating Value Unit
HBM Human body model ±2000 V
CDM Charge device model ±500 V
Latchup current at T = 85 °C ±100 mA
Caution
This device is sensitive to mechanical shock. Improper handling can cause permanent damage to the part or
cause the part to otherwise fail.
Caution
msc896
This is an ESD sensitive device. Improper handling can cause permanent damage to the part.
8.3 Mechanical characteristics
Table 5. Mechanical characteristics
VDD = 2.5 V, T = 25 °C, over 50 kPa to 110 kPa, unless otherwise noted.
Symbol Parameter Test conditions Min Typ Max Unit
Pressure sensor
Calibrated range 50 –– 110 kPaPFS Measurement range
Operational range 20 –– 110 kPa
1x oversample –– 19 –– Pa RMSPressure reading noise [1]
128x oversample –– 1.5 –– Pa RMS
50 to 110 kPa over 0 °C to
50 °C
–0.4 –– 0.4 kPaPressure absolute accuracy
50 to 110 kPa over−10 °C to
70 °C
–– ±0.4 –– kPa
MPL3115A2
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
7 / 50
Symbol Parameter Test conditions Min Typ Max Unit
Relative accuracy during
pressure change between 70
to 110 kPa at any constant
temperature between −10 °C
to 50 °C
–– ±0.05 –– kPaPressure relative accuracy
Relative accuracy during
changing temperature
between −10 °C to 50 °C
at any constant pressure
between 50 kPa to 110 kPa
–– ±0.1 –– kPa
Barometer mode 0.25 1.5 –– PaPressure/altitude resolution
[2][3][4]
Altimeter mode 0.0625 0.3 –– m
One-shot mode –– 100 –– HzOutput data rate
FIFO mode –– –– 1 Hz
Board mount drift After solder reflow –– ±0.15 –– kPa
Long term drift After a period of 1 year –– ±0.1 –– kPa
Temperature sensor
TFS Measurement range –– –40 –– +85 °C
@25 °C –– ±1 –– °CTemperature accuracy
Over temperature range –– ±3 –– °C
TOP Operating temperature range –– –40 –– +85 °C
[1] Oversample (OSR) modes internally combine and average samples to reduce noise.
[2] Smallest bit change in register represents minimum value change in Pascals or meters. Typical resolution to signify change in altitude is 0.3 m.
[3] Reference pressure = 101.325 kPa (sea level).
[4] At 128x oversample ratio.
8.4 Electrical characteristics
Table 6. Electrical characteristics
@ VDD = 2.5 V, T = 25 °C unless otherwise noted.
Symbol Parameter Test conditions Min Typ Max Unit
VDDIO I/O supply voltage 1.62 1.8 3.6 V
VDD Operating supply voltage 1.95 2.5 3.6 V
Highest speed mode
oversample = 1
— 8.5 — µA
Standard mode oversample
= 16
— 40 — µA
IDD Integrated current 1 update
per second
High resolution mode
oversample = 128
— 265 — µA
IDDMAX Max current during
acquisition and conversion
During acquisition/
conversion
— 2 — mA
IDDSTBY Supply current drain in
STANDBY mode
STANDBY mode selected
SBYB = 0
— 2 — µA
MPL3115A2
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
8 / 50
Symbol Parameter Test conditions Min Typ Max Unit
VIH Digital high level input
voltage
SCL, SDA
0.75 — VDDIO
VIL Digital low level input voltage
SCL, SDA
0.3 VDDIO
VOH High level output voltage
INT1, INT2
IO = 500 µA 0.9 VDDIO
VOL Low level output voltage
INT1, INT2
IO = 500 µA 0.1 VDDIO
VOLS Low level output voltage
SDA
IO = 500 µA 0.1 VDDIO
High speed mode 60 msTON Turn-on time [1][2][3]
High resolution mode 1000 ms
TOP Operating temperature range −40 25 +85 °C
I2C addressing
I2C Address 0x60 Hex
The device uses 7-bit addressing and does not acknowledge general call address 000 0000. Slave address has been set
to 60h or 110 0000. 8-bit read is C1h, 8-bit write is C0h.
[1] Time to obtain valid data from STANDBY mode to ACTIVE mode
[2] High speed mode is achieved by setting the oversample rate of 1x.
[3] High resolution mode is achieved by setting the oversample to 128x.
MPL3115A2 Table 7. Serial interface pin descriptions
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
9 / 50
9 Digital interface
The registers embedded inside the device are accessed through an I2C serial interface.
Table 7. Serial interface pin descriptions
Name Description
SCL I2C serial clock
SDA I2C serial data
9.1 I2C characteristics
Table 8. I2C Slave timing values
All values referred to VIH(min) and VIL(max) levels.
I2CSymbol Parameter
Condition Min Max
Unit
fSCL SCL clock frequency Pull-up = 1 kΩ, Cb = 400 pF 0 400 kHz
fSCL SCL clock frequency Pull-up = 1 kΩ, Cb = 20 pF 0 4 MHz
tBUF Bus free time between STOP
and START condition
1.3 — µs
tHD;STA Repeated START hold time 0.6 µs
tSU;STA Repeated START setup time 0.6 µs
tSU;STO STOP condition setup time 0.6 µs
tHD;DAT SDA data hold time [1][2][3] 50 — ns
tSU;DAT SDA setup time [4] 100 — ns
tLOW SCL clock low time 1.3 µs
tHIGH SCL clock high time 0.6 µs
trSDA and SCL rise time [5] 20 + 0.1Cb300 ns
tfSDA and SCL fall Time [2][5][6][7] 20+ 0.1Cb300 ns
tSP Pulse width of spikes that are
suppressed by internal input
filter
50 ns
[1] tHD;DAT is the data hold time that is measured from the falling edge of SCL, applies to data in transmission and the acknowledge.
[2] The device must internally provide a hold time of at least 300 ns for the SDA signal (with respect to the VIH(min) of the SCL signal) to bridge the
undefined region of the falling edge of SCL
[3] The maximum tHD;DAT must be less than the maximum of tVD;DAT or tVD;ACK by a transition time. This device does not stretch the LOW period (tLOW) of the
SCL signal.
[4] A fast mode I2C device can be used in a standard mode I2C system, but the requirement tSU;DAT 250 ns must then be met. This will automatically be the
case if the device does not stretch the LOW period of the SCL signal. If such a device does stretch the LOW period of the SCL signal, it must output the
next data bit to the SDA line tr(max) + tSU;DAT = 1000 + 250 = 1250 ns (according to the standard mode I2C specification) before the SCL line is released.
Also the acknowledge timing must meet this set-up time.
[5] Cb = Total capacitance of one bus line in pF.
[6] The maximum tf for the SDA and SCL bus lines is specified at 300 ns. The maximum fall time for the SDA output stage tf is specified at 250 ns. This
allows series protection resistors to be connected in between the SDA and the SCL pins and the SDA/SCL bus lines without exceeding the maximum
specified tf.
[7] In fast mode plus, fall time is specified the same for both output stage and bus timing. If series resistors are used, designers should allow for this when
considering bus timing.
MPL3115A2 7.2% 39%. an dock 1 / lsCL 15‘clack Cyc‘e 5m SCL em clock
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
10 / 50
9.2 I2C operation
The transaction on the bus is started through a start condition (START) signal. START
condition is defined as a HIGH to LOW transition on the data line while the SCL line
is held HIGH. After START has been transmitted by the master, the bus is considered
busy. The next byte of data transmitted after START contains the slave address in the
first 7 bits, and the eighth bit tells whether the master is receiving data from the slave
or transmitting data to the slave. When an address is sent, each device in the system
compares the first seven bits after a start condition with its address. If they match,
the device considers itself addressed by the master. The ninth clock pulse, following
the slave address byte (and each subsequent byte) is the acknowledge (ACK).The
transmitter must release the SDA line during the ACK period. The receiver must then pull
the data line low so that it remains stable low during the high period of the acknowledge
clock period.
The number of bytes per transfer is unlimited. If the master cannot receive another
complete byte of data until it has performed some other function, it can hold the clock
line, SCL low to force the transmitter into a wait state. Data transfer only continues when
the master is ready for another byte and releases the clock line.
A low to high transition on the SDA line while the SCL line is high is defined as a stop
condition (STOP). A data transfer is always terminated by a STOP. A master may also
issue a repeated START during a data transfer. Device expects repeated STARTs to be
used to randomly read from specific registers.
The standard 7-bit I2C slave address is 60h or 1100000. 8-bit read is C1h, 8-bit write is
C0h.
Figure 4. I2C slave timing diagram
MPL3115A2 s ‘ ‘ ‘ X‘ k i h ‘j‘ ‘ X‘ ‘ i i ‘1 ‘ ‘ ‘ ‘F +<—>++ <—>++ i<—>ii i<—> ii 7 e saga Soul Table 9. Mode of operation description
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
11 / 50
SCL
SDA
Start
Signal Ack
Bit
1 2 3 4 5 6 7 8
MSB LSB
1 2 3 4 5 6 7 8
MSB LSB
Stop
Signal
No
SCL
SDA
1 2 3 4 5 6 7 8
MSB LSB
1 2 5 6 7 8
MSB LSB
Repeated
3 4
9 9
AD7 AD6 AD5 AD4 AD3 AD2 AD1 R/W XXX D7 D6 D5 D4 D3 D2 D1 D0
Calling Address Read/ Data Byte
AD7 AD6 AD5 AD4 AD3 AD2 AD1 R/W AD7 AD6 AD5 AD4 AD3 AD2 AD1 R/W
New Calling Address
9 9
XX
Ack
Bit
Write
Start
Signal
Start
Signal
Ack
Bit
Calling Address Read/
Write
Stop
Signal
No
Ack
Bit
Read/
Write
Figure 5. I2C bus transmission signals
Consult factory for alternate addresses. See the application note titled Sensor I2C Setup
and FAQ (document AN4481).
10 Modes of operation
STANDBY
OFF WAKE
SLEEP
ACTIVE
Figure 6. Mode transition diagram
Table 9. Mode of operation description
Mode I2C-bus state VDD Condition Function description
OFF Powered down < 1.62 V < VDD + 0.3 V Device is powered off.
STANDBY I2C/SPI
communication with
the device is possible
ON SBYB bit of CTRL_REG1
is cleared
Only POR and digital blocks are enabled.
Analog subsystem is disabled.
ACTIVE I2C/SPI
communication with
the device is possible
ON SBYB bit of CTRL_REG1
is set
All blocks are enabled (POR, digital, analog).
MPL3115A2 t up the de en polling Figure 8 Figure
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
12 / 50
10.1 OFF
Unit is powered down and has no operating functionality. VDD and VDDIO are not
powered.
10.2 STANDBY
The digital sections are operational and the unit is capable of receiving commands and
delivering stored data. The analog sections are off. The part is waiting for CTRL_REG1
to be configured and the part to enter active mode.
10.3 ACTIVE
Both analog and digital sections are running. The unit is capable of gathering new data,
and accepting commands. The device is fully functional.
11 Quick start setup
To set up the device in altimeter mode, you may select your data retrieval method
between polling (no FIFO), interrupt (no FIFO) or with the FIFO. The flow charts in Figure
7 and Figure 8 describe the setup for polling or interrupt with an OSR of 128.
For more information, see application note titled Data Manipulation and Basic Settings of
the MPL3115A2 Command Line Interface (document AN4519).
MPL3115A2 I“ IZC Address is 0x00 ”I SlaveAddressHC = 0x00 /‘ Set to Altimeter with an OSR = 128 ‘/ IIciRegWrite(STaveAddresslIC, 0x26, 0xB8); I“ Enable Data Flags in PT_DATA_CFG *I ||C_RegWrile(SlaveAddresslIC. 0x13. 0x07) /‘ Set Aclive '/ lICiRegWrite(SlaveAddresslIC, 0x26, 0x89): /‘ Read STATUS Register "I STA = IIC_RegRead($\aveAddressllC. 0x00), r ls Data Ready v (STA & 0x03) == TRUE /‘ Read our} and ouTJ V /~ This dears me mmv Interrupt -/ OUT7P7MSB = CiRegReatflSIaveAddreSSIIC, 0X01); om_p_csa : ||C_RegRead(SlavEAddressllC, 0x02); OUTiPiLSB = llciRegReadGlaveAddressHC, 0x03); OUT_T_MSB = C_RegRead(S\aveAddresslIC, 0x04}; OUTiTiLSB = llciRegReadISlaveAddresslIC, 0x05];
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
13 / 50
Figure 7. Polling - no FIFO
MPL3115A2 r lzc Maress l5 0x00 '/ SlaveMdrEssHC : axon I' Set to Alnmelerwuh an OSR = 123 ‘/ IIC_Reanle(SlaveMdressllC‘ 0x26, oxaa) /‘ Enable Data Flags "1 F'T_DATA_CFG 'l ||C_Reanle(SlaveAddressllC‘ 0x13, 0x07) r Set INT lo Acme Low Open Dram '/ IlcjegwnmslaveAddressll0. 0x28 0x11). P Enable DRDY lmermpl ‘l llc_Regvvme(5laveAmressuc, oxzel 0x80), l' Sal Aalve 'l |IC_ReanIs(SlaveAddressllC, 0x26 0x99), Service lnlerrupl and Clear Check '0! lnlerrupl on pm an Yes I' Read |NT_SOURCE '/ M} = HCiRegReamSlave/AddresslIC‘ 0x12); /' ls SRciDRDY Set ‘I (lNT_S & 0x80) -- TRUE /' am out; and oqu '/ l‘ Yhix clears the DRDY Imenum ‘/ claims cjegneaalslavemdressuc,om), ouTj’jsa IlCJegRead1SlaveAddvasxllt, 0x011 ounuss = IchegxeadlslaveAddmsnc, 0x03); our, ,Ms (JewieamslaveAfldressllt, 0x04): OUTJ'JSB IICjeEReadtSlzveAddvessllc0x05):
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
14 / 50
Figure 8. Interrupt - no FIFO
MPL3115A2 Power consumption and sensitivity ar ratio can be set to balance cur ent co communication is through an I C inte for direct interfacing with a microcon programmable interrupt signals INT signal when a new set of pressure simplifying data acquisition for the configured to generate interrupts Section 12.6 "External interrupts" In order to accurately determine the altitude by pressure, the OFFiH regis Section 13.23.15 "OFF H - altitude data user offset reqister (address 2Dh)"
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
15 / 50
12 Functionality
The device is a low-power, high accuracy, digital output altimeter, barometer and
thermometer, packaged in a 3 x 5 x 1.1 mm form factor. The complete device includes a
sensing element, analog and digital signal processing and an I2C interface.
The device has two operational modes, barometer and altimeter. Both modes include a
thermometer temperature output function.
Power consumption and sensitivity are programmable where the data oversampling
ratio can be set to balance current consumption and noise/resolution. Serial interface
communication is through an I2C interface thus making the device particularly suitable
for direct interfacing with a microcontroller. The device features two independently
programmable interrupt signals INT1 and INT2. These can be set to generate an interrupt
signal when a new set of pressure/altitude and temperature data is available, thereby
simplifying data acquisition for the host controller. These interrupt pins can also be
configured to generate interrupts when a user programmed set of conditions are met (see
Section 12.6 "External interrupts").
Examples are:
interrupt can be triggered when a single new data acquisition is ready
when a desired number of samples are stored within the internal FIFO
when a change of pressure/altitude or temperature is detected.
In RAW mode, the FIFO must be disabled and all other functionality including alarms,
deltas and other interrupts are disabled.
12.1 Factory calibration
The device is factory calibrated for sensitivity, offset for both temperature and pressure
measurements. Trim values are stored on-chip, in non-volatile memory (NVM). In normal
use, further calibration is not necessary. However, in order to realize the highest possible
accuracy, the device allows the user to override the factory set offset values after power-
up. The user adjustments are stored in volatile registers. The factory calibration values
are not affected, and are always used by default on power-up.
12.2 Barometer/altimeter function
The mode of operation of the device can be selected as barometer or altimeter. The
internal sensor gives an absolute pressure signal. The absolute pressure signal is
processed to provide a scaled pressure or an altitude, depending on the mode selected.
The combination of a high performance sensor and the signal processing enable
resolution of pressures below 1 Pa and altitude resolution of better than 1 m at sea level.
When in barometer mode, all pressure related data is reported as 20-bit unsigned data
in Pascals. When in altimeter mode, all pressure data is converted to equivalent altitude,
based on the US standard atmosphere and then stored as 20-bit 2's complement value in
meters and fractions of a meter.
12.2.1 Barometric input
In order to accurately determine the altitude by pressure, the OFF_H register (see
Section 13.23.3 "OFF_H - altitude data user offset register (address 2Dh)") is provided to
MPL3115A2
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
16 / 50
input the local barometric pressure correction. The default value is 101,326 Pa since the
BAR_IN_MSB and BAR_IN_LSB registers are in units of 2 Pascals per LSB.
12.3 Temperature function
The unit contains a high-resolution temperature sensor that provides data to the user via
a 16-bit data register, as well as for internal compensation of the pressure sensor.
12.4 Autonomous data acquisition
The unit can be programmed to periodically capture altitude/pressure and temperature
data. Up to 32 data acquisitions can be stored in the internal FIFO. The interval between
acquisitions is programmable from one second to nine hours.
Data collection capabilities: (up to 32 samples over 12 days). The unit can also be
programmed to make a single reading and then go to standby mode.
12.5 FIFO
A 32-sample FIFO is incorporated to minimize the overhead of collecting multiple data
samples. The FIFO stores both temperature and pressure/altitude data. The device can
be programmed to autonomously collect data at programmed intervals and store the data
in the FIFO. FIFO interrupts can be triggered by watermark full or data contention (FIFO
GATE) events.
12.6 External interrupts
Two independent interrupt out pins are provided. The configuration of the pins are
programmable (polarity, open drain or push/pull.) Any one of the internal interrupt
sources can be routed to either pin.
12.6.1 Reach target threshold pressure/altitude (SRC_PTH)
The interrupt flag is set on reaching the value stored in the pressure/altitude target
register. Additionally, a window value provides the ability to signal when the target is
nearing the value in the pressure/altitude target register from either above or below.
When in barometer mode, these values represent pressures rather than altitudes.
Examples:
Set altitude alert to 3000 m and window value to 100 m, interrupt is asserted passing
2900 m, 3000 m, and 3100 m.
Set pressure alert to 100.0 kPa and window value to 5 kPa, interrupt can be sent
passing 95 kPa, 100 kPa, and 105 kPa.
Note: When the window value is set to 0 then the interrupt will only be generated when
reaching or crossing the target value.
12.6.2 Reach window target pressure/altitude (SRC_PW)
The interrupt flag is set when the pressure/altitude value is within the window defined by
the following formula:
MPL3115A2 Window = P—TGTMSB,LSB + P_WINDMSBVL53 Window = [TGT i [Wle set when either an overflow or water Section 13.8 "FIFO semg registers"
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
17 / 50
Note: No interrupt is generated if the P_WND value is set to 0.
12.6.3 Reach target threshold temperature (SRC_TTH)
Interrupt flag is set on reaching the value stored in the temperature target register.
Additionally a window value provides ability to signal when the target is nearing from
either above or below the value in the temperature target register.
Note: When the window value is set to 0 then the interrupt will only be generated when
reaching or crossing the target value.
12.6.4 Reach window target temperature (SRC_TW)
The interrupt flag is set when the temperature value is within the window defined by the
following formula:
Note: No interrupt is generated if the T_WND value is set to 0.
12.6.5 Pressure/altitude change (SRC_PCHG)
Interrupt flag is set if sequential pressure/altitude acquisitions exceed value stored in
pressure/altitude window value register.
12.6.6 Temperature change (SRC_TCHG)
Interrupt flag is set if sequential temperature acquisitions exceed the value stored in
pressure/altitude window value register.
12.6.7 Data ready
Interrupt flag is set when new data or a data overwrite event has occurred. PTOW and/or
PTDR (DR_STATUS register) must be set for an interrupt to be generated.
12.6.8 FIFO event
Interrupt flag is set when either an overflow or watermark event has occurred. For more
information see Section 13.8 "FIFO setup registers".
12.6.9 Pressure/altitude and temperature delta
Registers show the differences from the last pressure/altitude and temperature samples.
12.6.10 Min/max data value storage
Registers record the minimum and maximum pressure/altitude and temperature.
MPL3115A2 Table 10. Register address map Seam 131 Seam 133 Seam 133 Seam 133 Seam m Seam m Seam 132 Seam 135 Seam 135 Seam 135 Seam 139 Seam 139 SedmIHSY Seaman Seammaaz Seaman Seam 139 Seam 1; 1n Seammau Seam 1312 Seam 1313 Seam 1313 Seam 131: Seam 131: Seam 1a 15 Seam 1313 Seam 1313 Seam 1a 17 Seam 13 1s Seam 13 1s
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
18 / 50
13 Register descriptions
Table 10. Register address map
Register
Address
Name Access Reset
value
Description Reset when
STBY to
Active
Comment Auto-increment
address
Reference
00h STATUS R 00h Sensor status register [1].[2] Yes Alias for DR_STATUS or
F_STATUS
01h Section 13.1
01h OUT_P_MSB R 00h Pressure data out MSB [1][2] Yes Bits 12 to 19 of 20-bit real-
time pressure sample.
Root pointer to pressure
and temperature FIFO
data.
02h 01h Section 13.3
02h OUT_P_CSB R 00h Pressure data out CSB [1][2] Yes Bits 4 to 11 of 20-bit real-
time pressure sample
03h Section 13.3
03h OUT_P_LSB R 00h Pressure data out LSB [1][2] Yes Bits 0 to 3 of 20-bit real-
time pressure sample
04h Section 13.3
04h OUT_T_MSB R 00h Temperature data out MSB [1][2] Yes Bits 4 to 11 of 12-bit real-
time temperature sample
05h Section 13.4
05h OUT_T_LSB R 00h Temperature data out LSB [1][2] Yes Bits 0 to 3 of 12-bit real-
time temperature sample
00h Section 13.4
06h/00h DR_STATUS R 00h Sensor status register [1][2] Yes Data ready status
information
07h Section 13.2
07h OUT_P_DELTA_MSB R 00h Pressure data out delta MSB [1][2] Yes Bits 12 to 19 of 20-bit
pressure change data
08h Section 13.5
08h OUT_P_DELTA_CSB R 00h Pressure data out delta CSB [1][2] Yes Bits 4 to 11 of 20-bit
pressure change data
09h Section 13.5
09h OUT_P_DELTA_LSB R 00h Pressure data out delta LSB [1][2] Yes Bits 0 to 3 of 20-bit
pressure change data
0Ah Section 13.5
0Ah OUT_T_DELTA_MSB R 00h Temperature data out delta MSB [1][2] Yes Bits 4 to 11 of 12-bit
temperature change data
0Bh Section 13.6
0Bh OUT_T_DELTA_LSB R 00h Temperature data out delta LSB [1][2] Yes Bits 0 to 3 of 12-bit
temperature change data
06h Section 13.6
0Ch WHO_AM_I R C4h Device identification register No Fixed device ID number 0Dh Section 13.7
0Dh F_STATUS R 00h FIFO status register [1][2] Yes FIFO status: no FIFO
event detected
0Eh Section 13.8.1
0Eh/01h F_DATA R 00h FIFO 8-bit data access [1][2] Yes FIFO 8-bit data access 0Eh Section 13.8.2
0Fh F_SETUP R/W 00h FIFO setup register [1][3] No FIFO setup 10h Section 13.8.3
10h TIME_DLY R 00h Time delay register [1][2] Yes Time since FIFO overflow 11h Section 13.9
11h SYSMOD R 00h System mode register [2] Yes Current system mode 12h Section 13.10
12h INT_SOURCE R 00h Interrupt source register [1] No Interrupt status 13h Section 13.11
13h PT_DATA_CFG R/W 00h PT data configuration register [1][3] No Data event flag
configuration
14h Section 13.12
14h BAR_IN_MSB R/W C5h BAR input in MSB [1][3] No Barometric input for
altitude calculation bits 8
to15
15h Section 13.13
15h BAR_IN_LSB R/W E7h BAR input in LSB [1][3] No Barometric input for
altitude calculation bits 0
to 7
16h Section 13.13
16h P_TGT_MSB R/W 00h Pressure target MSB [1][3] No Pressure/altitude target
value bits 8 to 15
17h Section 13.14
17h P_TGT_LSB R/W 00h Pressure target LSB [1][3] No Pressure/altitude target
value bits 0 to 7
18h Section 13.14
18h T_TGT R/W 00h Temperature target register [1][3] No Temperature target value 19h Section 13.15
19h P_WND_MSB R/W 00h Pressure/altitude window MSB [1][3] No Pressure/altitude window
value bits 8 to 15
1Ah Section 13.16
1Ah P_WND_LSB R/W 00h Pressure/altitude window LSB [1][3] No Pressure/altitude window
value bits 0 to 7
1Bh Section 13.16
1Bh T_WND R/W 00h Temperature window register [1][3] No Temperature window
value
1Ch Section 13.17
1Ch P_MIN_MSB R/W 00h Minimum pressure data out MSB [1][3] No Minimum pressure/altitude
bits 12 to 19
1Dh Section 13.18
1Dh P_MIN_CSB R/W 00h Minimum pressure data out CSB [1][3] No Minimum pressure/altitude
bits 4 to 11
1Eh Section 13.18
MPL3115A2 519919111319 5mm 13 29 5mm 13 29 519919111319 519919111319 519919111319 5mm 13 21 5mm 13 21 Sea19n13221 591919111322 2 59191911132 3 59191911132 ; 591919111322 5 5mm 13 22 5199191113222 5199191113223 51mm 132 5mm 13 a 5mm 13 a 5mm 13 a 5mm 13 A 5mm 13 A
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
19 / 50
Register
Address
Name Access Reset
value
Description Reset when
STBY to
Active
Comment Auto-increment
address
Reference
1Eh P_MIN_LSB R/W 00h Minimum pressure data out LSB [1][3] No Minimum pressure/altitude
bits 0 to 3
1Fh Section 13.18
1Fh T_MIN_MSB R/W 00h Minimum temperature data out MSB
[1][3] No Minimum temperature bits
8 to15
20h Section 13.20
20h T_MIN_LSB R/W 00h Minimum temperature data out LSB
[1][3] No Minimum temperature bits
0 to 7
21h Section 13.20
21h P_MAX_MSB R/W 00h Maximum pressure data out MSB [1][3] No Maximum pressure/
altitude bits 12 to 19
22h Section 13.19
22h P_MAX_CSB R/W 00h Maximum pressure data out CSB [1][3] No Maximum pressure/
altitude bits 4 to 11
23h Section 13.19
23h P_MAX_LSB R/W 00h Maximum pressure data out LSB [1][3] No Maximum pressure/
altitude bits 0 to 3
24h Section 13.19
24h T_MAX_MSB R/W 00h Maximum temperature data out MSB
[1][3] No Maximum temperature bits
8 to 15
25h Section 13.21
25h T_MAX_LSB R/W 00h Maximum temperature data out LSB
[1][3] No Maximum temperature bits
0 to 7
26h Section 13.21
26h CTRL_REG1 R/W 00h Control register 1 [1][4] No Modes, oversampling 27h Section 13.22.1
27h CTRL_REG2 R/W 00h Control register 2 [1] No Acquisition time step 28h Section 13.22.2
28h CTRL_REG3 R/W 00h Control register 3 [1][4] No Interrupt pin configuration 29h Section 13.22.3
29h CTRL_REG4 R/W 00h Control register 4 [1][4] No Interrupt enables 2Ah Section 13.22.4
2Ah CTRL_REG5 R/W 00h Control register 5 [1][4] No Interrupt output pin
assignment
2Bh Section 13.22.5
2Bh OFF_P R/W 00h Pressure data user offset register No Pressure data offset 2Ch Section 13.23
2Ch OFF_T R/W 00h Temperature data user offset register No Temperature data offset 2Dh Section 13.23.2
2Dh OFF_H R/W 00h Altitude data user offset register No Altitude data offset 0Ch Section 13.23.3
[1] Register contents are preserved when transitioning from ACTIVE to STANDBY mode
[2] Register contents are reset when transitioning from STANDBY to ACTIVE mode.
[3] Register contents can be modified anytime in STANDBY or ACTIVE mode.
[4] Modification of this register's contents can only occur when device in STANDBY mode except the SBYB, OST and RST bit fields in CTRL_REG1 register.
Table 11. Register address map: Area A (F_Mode = 0, FIFO disabled)
Register
Address
Name Access Reset
value
Description Reset when
STBY to
Active
Comment Auto-increment
address
Reference
00h/06h DR_STATUS [1] R 00h Sensor status register Yes DR_STATUS 01h Section 13.2
01h OUT_P_MSB [1] R 00h Pressure data out MSB Yes Bits12 to 19 of 20-bit real-time
pressure sample.
Root pointer to pressure and
temperature FIFO data.
02h 01h Section 13.3
02h OUT_P_CSB [1] R 00h Pressure data out CSB Yes Bits 4 to 11 of 20-bit real-time
pressure sample
03h Section 13.3
03h OUT_P_LSB [1] R 00h Pressure data out LSB Yes Bits 0 to 3 of 20-bit real-time
pressure sample
04h Section 13.3
04h OUT_T_MSB [1] R 00h Temperature data out MSB Yes Bits 4 to 11 of 12-bit real-time
temperature sample
05h Section 13.4
05h OUT_T_LSB [1] R 00h Temperature data out LSB Yes Bits 0 to 3 of 12-bit real-time
temperature sample
00h Section 13.4
[1] The Registers in Area A from 00h to 05h depend on the F_MODE bit setting in FIFO Setup Register (F_SETUP).
F_MODE = 00, FIFO is disabled.
F_MODE = 01 is circular buffer.
F_MODE = 10 is full stop mode.
MPL3115A2 Seam 1331 Seam «a 32 Table 13. Alias for DR_Status (06m or F_Status (ODh) registers Section 13.83 " F SETUF- FIFO sslug reg ter (address th)" Table 14. DR_STATUS - status register (address 06m bit allocation
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
20 / 50
Table 12. Register address map: Area A (F_Mode > 0, FIFO in circular buffer or full stop mode)
Register
Address
Name Access Reset
value
Description Reset when
STBY to
Active
Comment Auto-
increment
address
Reference
00h/0Dh F_STATUS [1] R 00h Sensor status register Yes F_STATUS 01h Section 13.8.1
01h F_DATA[1] R 00h FIFO 8-bit data access Yes 01h Section 13.8.2
02h Read to reserved area
returns 00 [1] 00h n.a. — 03h
03h Read to reserved area
returns 00 [1] 00h n.a. — 04h
04h Read to reserved area
returns 00 [1] 00h n.a. — 05h
05h Read to reserved area
returns 00 [1] 00h n.a. — 00h
[1] The registers in area A from 00h to 05h depend on the F_MODE bit setting in FIFO setup register (F_SETUP).
F_MODE = 00, FIFO is disabled.
F_MODE = 01 is circular buffer.
F_MODE = 10 is full stop mode.
13.1 STATUS - sensor status register (address 00h)
The aliases allow the STATUS register to be read easily before reading the current
pressure/altitude or temperature data, the delta pressure/altitude or temperature data, or
the FIFO data, using the register address auto-incrementing mechanism.
Table 13. Alias for DR_Status (06h) or F_Status (0Dh) registers
FIFO data enabled
mode bit setting
Status register alias
F_MODE = 00 [1] 00h = DR_STATUS (06h)
F_MODE >00 00h = F_STATUS (0Dh)
[1] The F_MODE is defined in Section 13.8.3 " F_SETUP- FIFO setup register (address 0Fh)"
13.2 DR_STATUS - status register (address 06h)
The DR_STATUS register provides the acquisition status information on a per sample
basis, and reflects real-time updates to the OUT_P and OUT_T registers. The same
STATUS register can be read through an alternate address 00h (F_Mode = 00).
Table 14. DR_STATUS - status register (address 06h) bit allocation
Bit76543210
Symbol PTOW POW TOW reserved PTDR PDR TDR reserved
Reset 00000000
Access RRRRRRRR
MPL3115A2 Table 15. DR_STATUS - status register (address 06h) bit description
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
21 / 50
Table 15. DR_STATUS - status register (address 06h) bit description
Bit Symbol Description
7 PTOW [1] Pressure/altitude or temperature data overwrite. PTOW is set to 1 whenever new data is
acquired before completing the retrieval of the previous set. This event occurs when the
content of at least one data register (OUT_P, OUT_T) has been overwritten. PTOW is
cleared when the high-bytes of the data (OUT_P_MSB or OUT_T_MSB) are read, when
F_MODE is zero. PTOW is cleared by reading F_DATA register when F_MODE > 0.
0 — No data overwrite has occurred (reset value)
1 — Previous pressure/altitude or temperature data was overwritten by new pressure/altitude
or temperature data before it was read
6 POW [2] Pressure/altitude data overwrite. POW is set to 1 whenever a new pressure/altitude
acquisition is completed before the retrieval of the previous data. When this occurs the
previous data is overwritten. POW is cleared anytime OUT_P_MSB register is read, when
F_MODE is zero. POW is cleared by reading F_DATA register when F_MODE > 0.
0 — No data overwrite has occurred (reset value)
1 — Previous pressure/altitude data was overwritten by new pressure/altitude data before it
was read
5 TOW[3] Temperature data overwrite. TOW is set to 1 whenever a new temperature acquisition is
completed before the retrieval of the previous data. When this occurs the previous data is
overwritten. TOW is cleared anytime OUT_T_MSB register is read, when F_MODE is zero.
TOW is cleared by reading F_DATA register when F_MODE > 0.
0 — No data overwrite has occurred (reset value)
1 — Previous temperature data was overwritten by new temperature data before it was read
4 reserved This bit is reserved
3 PTDR [1] Pressure/altitude or temperature data ready. PTDR signals that a new acquisition for either
pressure/altitude or temperature is available. PTDR is cleared anytime OUT_P_MSB or
OUT_T_MSB register is read, when F_MODE is zero. PTDR is cleared by reading F_DATA
register when F_MODE > 0.
0 — No new set of data ready (reset value)
1 — A new set of data is ready
2 PDR [2] Pressure/altitude new data available. PDR is set to 1 whenever a new pressure/altitude
data acquisition is completed. PDR is cleared anytime OUT_P_MSB register is read, when
F_MODE is zero. PDR is cleared by reading F_DATA register when F_MODE > 0.
0 — No new pressure/altitude data is available (reset value)
1 — A new set of Pressure/Altitude data is ready
1 TDR [3] Temperature new data available. TDR is set to 1 whenever a temperature data acquisition
is completed. TDR is cleared anytime OUT_T_MSB register is read, when F_MODE is zero.
TDR is cleared by reading F_DATA register when F_MODE > 0.
0 — No new temperature data ready (reset value)
1 — A new temperature data is ready
0 reserved This bit is reserved
[1] PTDR and PTOW flag generation requires the DREM event flag generator to be enabled in the PT data configuration register (PT_DATA_CFG).
[2] PDR and POW flag generation is required for the pressure/altitude event flag generator to be enabled (PDEFE = 1) in the PT data configuration register
(PT_DATA_CFG).
[3] TDR and TOW flag generation is required for the temperature event flag generator to be enabled (TDEFE = 1) in the PT data configuration register
(PT_DATA_CFG).
13.2.1 Data registers with F_MODE = 00 (FIFO disabled)
When the FIFO data output register, F_DATA (0Eh), is disabled (F_MODE[7:6] = 00 in
the F_SETUP register, 0Fh), the pressure and altitude data registers indicate the real-
MPL3115A2 time status information of th arometer data based on the mode de Section 13.8 "FIFO setup registers" Table 16. O allocation Section 13.8 "FIFO setup registers"
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
22 / 50
time status information of the sample data. This data can be either altimeter or barometer
data based on the mode defined by the ALT bit in the CTRL_REG1 register. See Section
13.8 "FIFO setup registers" for additional information.
13.3 OUT_P_MSB, OUT_P_CSB, OUT_P_LSB - pressure and altitude data
registers (address 01h, 02h, 03h)
Pressure and altitude data registers 01h, 02h and 03h comprise the pressure and
altitude data depending on the setting of the ALT bit in the CTRL_REG1 register, in
either altimeter or barometer mode. For example if the ALT bit is set (ALT = 1) then
after acquisition the data stored in registers 01h, 02h and 03h is the altitude in meters.
Otherwise the data stored in registers 01h, 02h and 03h (ALT = 0) is pressure data in
Pascals.
The altitude data is stored as a 20-bit signed integer with a fractional part. The
OUT_P_MSB (01h) and OUT_P_CSB (02h) registers contain the integer part in meters
and the OUT_P_LSB (03h) register contains the fractional part. This value is represented
as a Q16.4 fixed-point format where there are 16 integer bits (including the signed bit)
and four fractional bits.
The pressure data is stored as a 20-bit unsigned integer with a fractional part. The
OUT_P_MSB (01h), OUT_P_CSB (02h) and bits 7 to 6 of the OUT_P_LSB (03h)
registers contain the integer part in Pascals. Bits 5 to 4 of OUT_P_LSB contain the
fractional component. This value is representative as a Q18.2 fixed point format where
there are 18 integer bits (including the signed bit) and two fractional bits.
Note: When a RAW bit is set in the CTRL_REG1 register then the RAW value is stored
in all 24 bits of OUT_P_MSB, OUT_P_CSB and OUT_P_LSB registers whether in
altimeter or barometer mode.
Table 16. OUT_P_MSB, OUT_P_CSB, OUT_P_LSB - pressure and altitude data registers (address 01h, 02h, 03h) bit
allocation
Location Bit
Address Register 7 6 5 4 3 2 1 0
01h OUT_P_MSB PD[19:12]
02h OUT_P_CSB PD[11:4]
03h OUT_P_LSB PD[3:0] reserved
Reset 00000000
Access RRRRRRRR
13.3.1 Data registers with F_MODE = 00
The DR_STATUS, OUT_P_MSB, OUT_P_CSB, OUT_P_LSB, OUT_T_MSB, and
OUT_T_LSB registers are stored in the auto-incrementing address range of 00h to 05h.
This allows the host controller to read the status register followed by the 20-bit pressure/
altitude and 12-bit temperature in a 6-byte I2C transaction.
See Section 13.8 "FIFO setup registers" for additional information.
MPL3115A2 Table 17. OUT_T_MSB, OUT_T_LSB - temperature data registers (address 04h, 05h) bit allocation Table 1a. OUT_P_DELTA_MSB, ou1_ (address 07h, 08h, 09h) bit allocation
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
23 / 50
13.4 OUT_T_MSB, OUT_T_LSB - temperature data registers (address 04h,
05h)
The temperature data is stored as a signed 12-bit integer with a fractional part. The
OUT_T_MSB (04h) register contains the integer part in °C and the OUT_T_LSB (05h)
register contains the fractional part. This value is representative as a Q8.4 fixed point
format where there are eight integer bits (including the signed bit) and four fractional bits.
Note: When the RAW bit is set in CTRL_REG1 is selected then the RAW temperature
value is stored in all 16 bits of the OUT_T_MSB and OUT_T_LSB.
Table 17. OUT_T_MSB, OUT_T_LSB - temperature data registers (address 04h, 05h) bit allocation
Location Bit
Address Register 7 6 5 4 3 2 1 0
04h OUT_T_MSB TD[11:4]
05h OUT_T_LSB TD[3:0] reserved
Reset 00000000
Access RRRRRRRR
13.5 OUT_P_DELTA_MSB, OUT_P_DELTA_CSB, OUT_P_DELTA_LSB -
pressure and altitude delta register (address 07h, 08h, 09h)
The pressure and altitude delta registers 07h, 08h and 09h comprise the pressure and
altitude delta data and provide the differences from either the last pressure or altitude
samples based on the setting of the ALT bit in the CTRL_REG1 register. Device can be
in either altimeter or barometer mode.
The altitude data is arranged as a 20-bit signed integer with a fractional part. Stored as
meters with the 16 bits of OUT_P_DELTA_MSB and OUT_P_DELTA_CSB and with
fractions of a meter stored in four bits in position 7 to 4 of OUT_P_DELTA_LSB.
The pressure is arranged as a 20-bit unsigned integer with a fractional part in Pascals.
The first 18 bits are located in OUT_P_DELTA_MSB, OUT_P_DELTA_CSB and bits
7 to 6 of OUT_P_DELTA_LSB. The two bits in position 5 to 4 of OUT_P_DELTA_LSB
represent the fractional component.
In RAW mode, these registers are not used and their values are not updated.
Note: The OUT_P_DELTA register store the difference data information regardless of
the state of the FIFO data output register driver bit, F_MODE > 00.
Table 18. OUT_P_DELTA_MSB, OUT_P_DELTA_CSB, OUT_P_DELTA_LSB - pressure and altitude delta register
(address 07h, 08h, 09h) bit allocation
Location Bit
Address Register 7 6 5 4 3 2 1 0
07h OUT_P_DELTA_MSB PDD[19:12]
08h OUT_P_DELTA_CSB PDD[11:4]
09h OUT_P_DELTA_LSB PDD[3:0] reserved
Reset 00000000
MPL3115A2 Table 19. OUT_T_DELTA_MSB, OUT_T_DELTA_LSB - temperature delta register (address OAh, can) bit allocation Table 20. WHO_AM_I - device ID register (address ocn) bit allocation Table 21. F_STATUS - FIFO status register (address ODh) bit allocation
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
24 / 50
Location Bit
Address Register 7 6 5 4 3 2 1 0
Access RRRRRRRR
13.6 OUT_T_DELTA_MSB, OUT_T_DELTA_LSB - temperature delta
register (address 0Ah, 0Bh)
The temperature delta register 0Ah and 0Bh comprise the temperature delta data and
provide the difference from the last temperature samples.
The temperature data is arranged as 12-bit signed integer with a fractional part in °C. The
eight bits of OUT_T_DELTA_MSB representing degrees and with fractions of a degree
stored in four bits in position 7 to 4 of OUT_T_DELTA_LSB.
In RAW mode, these registers are not used and their values are not updated.
Note: The OUT_T_DELTA register store the difference data information regardless of the
state of the FIFO data output register driver bit, F_MODE > 00.
Table 19. OUT_T_DELTA_MSB, OUT_T_DELTA_LSB - temperature delta register (address 0Ah, 0Bh) bit allocation
Location Bit
Address Register 7 6 5 4 3 2 1 0
0Ah OUT_T_DELTA_MSB TDD[11:4]
0Bh OUT_T_DELTA_LSB TDD[3:0] reserved
Reset 00000000
Access RRRRRRRR
13.7 WHO_AM_I - device ID register (address 0Ch)
This register contains the device identifier which is set to C4h by default. The value is
factory programmed. Consult the NXP factory for custom alternate values.
Table 20. WHO_AM_I - device ID register (address 0Ch) bit allocation
Bit76543210
Symbol WHO_AM_I[7:0]
Reset 00000000
Access NVM data
1
NVM data
1
NVM data
0
NVM data
0
NVM data
0
NVM data
1
NVM data
0
NVM data
0
13.8 FIFO setup registers
13.8.1 F_STATUS - FIFO status register (address 0Dh)
Table 21. F_STATUS - FIFO status register (address 0Dh) bit allocation
Bit 7 6 5 4 3 2 1 0
Symbol F_OVF F_WMRK_FLAG F_CNT[5:0]
MPL3115A2 Table 22. F_STATUS - FIFO status register (address ODh) bit description Table 23. F_STATUS - FIFO status register (address ODh) bit description Table 24. F_DATA - FIFO data register (address OEh) bit allocation
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
25 / 50
Bit 7 6 5 4 3 2 1 0
Reset 0 0 000000
Access R R RRRRRR
Table 22. F_STATUS - FIFO status register (address 0Dh) bit description
F_OVF F_WMRK_FLAG Event description
0 No FIFO overflow events detected.
1 FIFO overflow event detected.
0No FIFO watermark events detected.
1FIFO watermark event detected. FIFO sample count greater
than watermark value
The F_OVF and F_WMRK_FLAG flags remain asserted while the event source is still
active, but the user can clear the FIFO interrupt bit flag in the interrupt source register
(INT_SOURCE) by reading the F_STATUS register. Therefore, the F_OVF bit flag will
remain asserted while the FIFO has overflowed and the F_WMRK_FLAG bit flag will
remain asserted while the F_CNT value is greater than then F_WMRK value.
Table 23. F_STATUS - FIFO status register (address 0Dh) bit description
Bit Symbol Description
5 to 0 F_CNT FIFO sample counter. F_CNT[5:0] bits indicate the number of
samples currently stored in the FIFO buffer.
00_0000 — indicates that the FIFO is empty (reset value)
00_0001 to 10_0000 — indicates 1 to 32 samples stored in FIFO
13.8.2 F_DATA - FIFO data register (address 0Eh)
F_DATA is a read only address which provides access to 8-bit FIFO data. FIFO holds
a maximum of 32 samples, a maximum of 5 32 = 160 data bytes of samples can
be read. When F_MODE bit in FIFO SETUP (F_SETUP) register is set to logic '1', the
F_DATA pointer shares the same address location as OUT_P_MSB (01h), therefore all
accesses of the FIFO buffer data use the I2C address 01h. Reads from the other data
registers (02h, 03h, 04h, 05h) will return a value of 00h.
Note: The FIFO will NOT suspend to data accumulation during read transactions to
F_DATA.
Table 24. F_DATA - FIFO data register (address 0Eh) bit allocation
Bit76543210
Symbol F_DATA[7:0]
Reset 00000000
Access RRRRRRRR
MPL3115A2 Table 26. F_SETUP- FIFO setup register (address OFh) bit allocation
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
26 / 50
Table 25. Read accesses through F_DATA
1st read OUT_P_MSB (oldest)
2nd read OUT_P_CSB (oldest)
3rd read OUT_P_LSB (oldest)
4th read OUT_T_MSB (oldest)
5th read OUT_T_LSB (oldest)
.
.
.
.
.
.
OUT_T_LSB (oldest)
00h
00h
13.8.3 F_SETUP- FIFO setup register (address 0Fh)
A FIFO sample count exceeding the watermark event does not stop the FIFO from
accepting new data.
The FIFO update rate is dictated by the selected system acquisition rate (ST bits of
CTRL_REG2).
When a byte is read from the FIFO buffer the oldest sample data in the FIFO buffer is
returned and also deleted from the front of the FIFO buffer, while the FIFO sample count
is decremented by one. It is assumed that the host application shall use the I2C BURST
read transaction to dump the FIFO.
Table 26. F_SETUP- FIFO setup register (address 0Fh) bit allocation
Bit76543210
Symbol F_MODE[1:0] F_WMRK[5:0]
Reset 00000000
Access RRRRRRRR
MPL3115A2 Table 27. F_SETUP- FIFO setup register (address OFh) bit description Table 28. TIME_DLY - time delay register (address 10h) bit allocation Table 29. SYSMOD - system made register (address 11m bit allocation Table 30. SYSMOD - system made register (address 11m bit description
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
27 / 50
Table 27. F_SETUP- FIFO setup register (address 0Fh) bit description
Bit Symbol Description
7 to 6 F_MODE[7:6] [1][2] FIFO buffer overflow mode.
00 — FIFO is disabled (reset value)
01 — FIFO contains the most recent samples when overflowed (circular buffer).
Oldest sample is discarded to be replaced by new sample
10 — FIFO stops accepting new samples when overflowed
11 — Not used
The FIFO is flushed whenever the FIFO is disabled, or transitioning from STANDBY mode
to ACTIVE mode. Disabling the FIFO (F_MODE = 00) resets the F_OVF, F_WMRK_FLAG,
F_CNT to zero. A FIFO overflow event (as when F_CNT = 32) will assert the F_OVF flag
and a FIFO sample count equal to the sample count watermark ( F_WMRK) asserts the
F_WMRK_FLAG event flag. To switch between FIFO modes, first disable the FIFO and then
write the new value to F_MODE.
5 to 0 F_WMRK[5:0][3] FIFO event sample count watermark. These bits set the number of FIFO samples required to
trigger a watermark interrupt. A FIFO watermark event flag (F_WMRK_FLAG) is raised when
FIFO sample count F_CNT[5:0] value is equal to the F_ WMRK[5:0] watermark.
00_0000 — FIFO is disabled (reset value) Setting the F_WMRK[5:0] to 00_0000 will disable
the FIFO watermark event flag generation.
[1] This bit field can be written in ACTIVE mode.
[2] This bit field can be written in STANDBY mode.
[3] The FIFO mode (F_MODE) cannot be switched between the two operational modes (01 and 10).
13.9 TIME_DLY - time delay register (address 10h)
The time delay register contains the number of ticks of data sample time since the last
byte of the FIFO was written. This register starts to increment on FIFO overflow or data
wrap and clears when the last byte of FIFO is read.
Table 28. TIME_DLY - time delay register (address 10h) bit allocation
Bit76543210
Symbol TD[7:0]
Reset 00000000
Access RRRRRRRR
13.10 SYSMOD - system mode register (address 11h)
Table 29. SYSMOD - system mode register (address 11h) bit allocation
Bit76543210
Symbol reserved SYSMOD
Reset 00000000
Access RRRRRRRR
Table 30. SYSMOD - system mode register (address 11h) bit description
Bit Symbol Description
7 to 1 reserved These bits are reserved and will always read 0
MPL3115A2 Table 31. INT_SOURCE - system interrupt status register (address 12h) bit allocation Table 32. INT_SOURCE - system interrupt status register (address 12h) bit description
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
28 / 50
Bit Symbol Description
0 SYSMOD System mode
0 — STANDBY mode (reset value)
1 — ACTIVE mode
13.11 INT_SOURCE - system interrupt status register (address 12h)
The interrupt source register bits that are set (logic '1') to indicate which function has
asserted its interrupt and conversely, bits that are cleared (logic '0') indicate which
function has not asserted its interrupt.
The setting of the bits is rising edge sensitive, the bit is set by a low to high state change
and reset by reading the appropriate source register.
Table 31. INT_SOURCE - system interrupt status register (address 12h) bit allocation
Bit 7 6 5 4 3 2 1 0
Symbol SRC_DRDY SRC_FIFO SRC_PW SRC_TW SRC_PTH SRC_TTH SRC_PCHG SRC_TCHG
Reset 0 0 0 0 0 0 0 0
Access R R R R R R R R
Table 32. INT_SOURCE - system interrupt status register (address 12h) bit description
Bit Symbol Description
7 SRC_DRDY Data ready interrupt status bit. Logic '1' indicates that pressure/altitude or temperature
data ready interrupt is active indicating the presence of new data and/or a data overwrite,
otherwise it is a logic '0'.
This bit is asserted when the PTOW and/or PTDR is set and the functional block interrupt
has been enabled. This bit is cleared by reading the STATUS and pressure/temperature
register.
6 SRC_FIFO FIFO interrupt status bit. Logic '1' indicates that a FIFO interrupt event such as an overflow
event has occurred.
FIFO interrupt event generators: FIFO overflow, or (watermark: F_CNT = F_WMRK).
0 — no FIFO interrupt event has occurred. (reset value) This bit is cleared by reading the
F_STATUS register.
1 — A FIFO interrupt event such as an overflow event has occurred.
5 SRC_PW Altitude/pressure alerter status bit near or equal to target pressure/altitude (near is within
target value ± window value).
0 — (reset value)
Window value needs to be non zero for interrupt to trigger.
4 SRC_TW Temperature alerter status bit near or equal to target temperature (near is within target value
± window value.)
0 — (reset value)
Window value needs to be non zero for interrupt to trigger.
3 SRC_PTH Altitude/pressure threshold interrupt.
0 — If the window is set to 0, it will only trigger on crossing the center threshold. (reset value)
1 — With the window set to a non zero value, the trigger will occur on crossing any of the
thresholds: upper, center or lower.
MPL3115A2 Table 33. PT_DATA_CFG - sensor data register (address13h) bit allocation Table 34. PT_DATA_CFG - sensor data register (address13h) bit description
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
29 / 50
Bit Symbol Description
2 SRC_TTH Temperature threshold interrupt.
0 — If the window is set to 0, it will only trigger on crossing the center threshold.(reset value)
1 — With the window set to a non zero value, the trigger will occur on crossing any of the
thresholds: upper, center or lower.
1 SRC_PCHG Delta P interrupt status bit.
0 — (reset value)
0 SRC_TCHG Delta T interrupt status bit.
0 — (reset value)
13.12 PT_DATA_CFG - sensor data register (address13h)
The PT_DATA_CFG register configures the pressure data, temperature data and event
flag generator.
Table 33. PT_DATA_CFG - sensor data register (address13h) bit allocation
Bit76543210
Symbol reserved DREM PDEFE TDEFE
Reset 00000000
Access RRRRRRRR
Table 34. PT_DATA_CFG - sensor data register (address13h) bit description
Bit Symbol Description
7 to 3 reserved These bits are reserved
2 DREM Data ready event mode.
0 — Event detection disabled (reset value) If the DREM bit is cleared logic '0' and one or
more of the data ready event flags are enabled, then an event flag will be raised whenever
the system acquires a new set of data.
1 — Generate data ready event flag on new pressure/altitude or temperature data. If the
DREM bit is set logic '1' and one or more of the data ready event flags (PDEFE, TDEFE) are
enabled, then an event flag will be raised upon change in state of the data.
1 PDEFE Data event flag enable on new pressure/altitude
0 — Event detection disabled (reset value)
1 — Raise event flag on new pressure/altitude data
0 TDEFE Data event flag enable on new temperature data.
0 — Event detection disabled (reset value)
1 — Raise event flag on new temperature data
13.13 BAR_IN_MSB, BAR_IN_LSB - barometric pressure input register
(address 14h, 15h)
Barometric input for altitude calculations. Input is equivalent to sea level pressure for
measurement location. Value is input in two Pa units.
Units are input as unsigned 16-bit integers. The default value is 101,326 Pa. The default
value can be changed by writing to this register.
MPL3115A2 Table 35. BAR_IN_MSB, BAR_IN_LSB - barometric pressure input register (address 14h, 15h) bit allocation Table 36. P_TGT_MSB, P_TGT_LSB - pressurelaltitude target value register (address 16h, 17h) bit allocation Table 37. T_TGT- temperature target value register (address 18h) bit allocation
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
30 / 50
Table 35. BAR_IN_MSB, BAR_IN_LSB - barometric pressure input register (address 14h, 15h) bit allocation
Location Bit
Address Register 7 6 5 4 3 2 1 0
14h BAR_IN_MSB BAR[15:8]
15h BAR_IN_LSB BAR[7:0]
Reset MSB
Reset LSB
1
1
1
1
0
1
0
0
0
0
1
1
0
1
1
1
Access R/W R/W R/W R/W R/W R/W R/W R/W
13.14 P_TGT_MSB, P_TGT_LSB - pressure/altitude target value register
(address 16h, 17h)
Altitude or pressure target value.
Depending on the setting of the ALT bit in the CTRL_REG1 register, in operates in either
altimeter or barometer mode. This value works in conjunction with the window value
(P_WND_MSB and P_WND_LSB). In altitude mode, the register value is 16-bit signed
integer in meters.
In pressure mode, the value is a 16-bit unsigned value in two Pa units.
Table 36. P_TGT_MSB, P_TGT_LSB - pressure/altitude target value register (address 16h, 17h) bit allocation
Location Bit
Address Register 7 6 5 4 3 2 1 0
16h P_TGT_MSB P_TGT[15:8]
17h P_TGT_LSB P_TGT[7:0]
Reset 00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
13.15 T_TGT- temperature target value register (address 18h)
Temperature target value is input as an 8-bit signed integer in °C.
Table 37. T_TGT- temperature target value register (address 18h) bit allocation
Bit76543210
Symbol T_TGT[7:0]
Reset 00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
13.16 P_WND_LSB, P_WND_MSB - pressure/altitude window value register
(address 19h, 1Ah)
Pressure or altitude window value register is arranged as an unsigned 16-bit integer of
window value in meters or in two Pa units, depending on either altimeter or barometer
mode.
MPL3115A2 Table Sat P_WND_LSB, P_WND_MSB - pressure/altitude window value register (address 19h, 1Ah) bit allocation Table 39‘ T_WIN- temperature window value register (address 18h) bit allocation Table 411 P allocation
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
31 / 50
Table 38. P_WND_LSB, P_WND_MSB - pressure/altitude window value register (address 19h, 1Ah) bit allocation
Location Bit
Address Register 7 6 5 4 3 2 1 0
19h P_WND_LSB P_W[15:8]
1Ah P_WND_MSB P_W[7:0]
Reset 00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
13.17 T_WIN- temperature window value register (address 18h)
The temperature alarm window value register is an unsigned 8-bit value in °C.
Table 39. T_WIN- temperature window value register (address 18h) bit allocation
Bit76543210
Symbol T_WIN[7:0]
Reset 00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
13.18 P_MIN_MSB, P_MIN_CSB, P_MIN_LSB - minimum pressure or
altitude register (address 1Ch, 1Dh, 1Eh)
Register with captured minimum pressure or altitude value.
The altitude data is arranged as a 20-bit signed integer in meters. The first 16 bits are
located in P_MIN_MSB and P_MIN_CSB. Fractions of a meter are stored in four bits in
position 7 to 4 of P_MIN_LSB.
The pressure is arranged as a 20-bit unsigned data in Pascals. The first 18 bits are
located in P_MIN_MSB, P_MIN_CSB and bits 7 to 6 of P_MIN_LSB. The two bits in
position 5 to 4 of P_MIN_LSB represent the fractional component.
The register is cleared on power-up or manually by writing '0' to the register.
Table 40. P_MIN_MSB, P_MIN_CSB, P_MIN_LSB - minimum pressure or altitude register (address 1Ch, 1Dh, 1Eh) bit
allocation
Location Bit
Address Register 7 6 5 4 3 2 1 0
1Ch P_MIN_MSB P_MIN[19:12]
1Dh P_MIN_CSB P_MIN[11:4]
1Eh P_MIN_LSB P_MIN[3:0] reserved
Reset 00000000
Access MSB
Access CSB
Access LSB
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R/W
R/W
R
R/W
R/W
R
R/W
R/W
R
MPL3115A2 Table 41. P_M bit allocation Table 42. T_MIN_MSB, T_MIN_LSB - minimum temperature register (address 1Fh, 20h) bit allocation
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
32 / 50
13.19 P_MAX_MSB, P_MAX_CSB, P_MAX_LSB - maximum pressure or
altitude register (address 21h, 22h, 23h)
Register with captured maximum pressure or altitude value.
The altitude data is arranged as a 20-bit signed integer in meters. The first 16 bits are
located in P_MAX_MSB and P_MAX_CSB. Fractions of a meter stored in four bits in
position 7 to 4 of P_MAX_LSB.
The pressure is arranged as a 20-bit unsigned data in Pascals. The first 18 bits are
located in P_MAX_MSB, P_MAX_CSB and bits 7 to 6 of P_MAX_LSB. The two bits in
position 5 to 4 of P_MAX_LSB represent the fractional component.
The register is cleared on power-up or manually by writing '0' to the registers.
Table 41. P_MAX_MSB, P_MAX_CSB, P_MAX_LSB - maximum pressure or altitude register (address 21h, 22h, 23h)
bit allocation
Location Bit
Address Register 7 6 5 4 3 2 1 0
21h P_MAX_MSB P_MAX[19:12]
22h P_MAX_CSB P_MAX[11:4]
23h P_MAX_LSB P_MAX[3:0] reserved
Reset 00000000
Access MSB
Access CSB
Access LSB
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R/W
R/W
R
R/W
R/W
R
R/W
R/W
R
13.20 T_MIN_MSB, T_MIN_LSB - minimum temperature register (address
1Fh, 20h)
Register with captured minimum temperature value.
The temperature data is arranged as a 12-bit signed integer in °C. The first eight bits are
located in T_MIN_MSB with fractions of a degree stored in four bits in position 7 to 4 of
T_MIN_LSB.
The register is cleared on power-up or manually by writing '0' to the registers.
Table 42. T_MIN_MSB, T_MIN_LSB - minimum temperature register (address 1Fh, 20h) bit allocation
Location Bit
Address Register 7 6 5 4 3 2 1 0
1Fh T_MIN_MSB T_MIN[11:4]
20h T_MIN_LSB T_MIN[3:0] reserved
Reset 00000000
Access MSB
Access LSB
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R/W
R
R/W
R
R/W
R
MPL3115A2 Table 43. T_MAX_MSB, T_MAX_LSB - minimum temperature register (address 24h, 25h) bit allocation Table 44. CTRL_REG1 - control register 1 (address 26h) bit allocation Table 45. CTRL_REG1 - control register 1 (address 26h) bit description
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
33 / 50
13.21 T_MAX_MSB, T_MAX_LSB - maximum temperature register (address
24h, 25h)
Register with captured maximum temperature value.
The temperature data is arranged as a 12-bit signed integer in °C. The first eight bits are
located in T_MAX_MSB with fractions of a degree stored in four bits in position 7 to 4 of
T_MAX_LSB.
The register is cleared on power-up or manually by writing '0' to the registers
Table 43. T_MAX_MSB, T_MAX_LSB - minimum temperature register (address 24h, 25h) bit allocation
Location Bit
Address Register 7 6 5 4 3 2 1 0
24h T_MAX_MSB T_MAX[11:4]
25h T_MAX_LSB T_MAX[3:0] reserved
Reset 00000000
Access MSB
Access LSB
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R/W
R
R/W
R
R/W
R
13.22 Control registers
13.22.1 CTRL_REG1 - control register 1 (address 26h)
Note: Except for STANDBY and OST mode selection, the device must be in STANDBY
mode to change any of the fields within bits 7 to 0 of CTRL_REG1 (26h).
Table 44. CTRL_REG1 - control register 1 (address 26h) bit allocation
Bit76543210
Symbol ALT RAW OS[2:0] 0 (R)
RST (W)
OST SBYB
Reset 00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
Table 45. CTRL_REG1 - control register 1 (address 26h) bit description
Bit Symbol Description
7 ALT Altimeter/barometer mode.
0 — Part is in barometer mode (reset value)
1 — Part is in altimeter mode
6 RAW RAW output mode. RAW bit will output ADC data with no post processing, except for
oversampling. No scaling or offsets will be applied in the digital domain. The FIFO must be
disabled and all other functionality including alarms, deltas, and other interrupts are disabled.
5 to 3 OS[2:0] Oversample ratio. These bits select the oversampling ratio. Value is 2OS. The default value is
000 for a ratio of 1.
MPL3115A2 Table 46. System output sample rate selection
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
34 / 50
Bit Symbol Description
2 0 (R)
RST (W)
Software reset. This bit is used to activate the software reset. The boot mechanism can be
enabled in STANDBY and ACTIVE mode.
When the boot bit is enabled the boot mechanism resets all functional block registers and
loads the respective internal registers with default values.
If the system was already in STANDBY mode, the reboot process will immediately begin, or
else if the system was in ACTIVE mode, the boot mechanism will automatically transition the
system from ACTIVE mode to STANDBY mode. Only then can the reboot process begin.
The I2C communication system is reset to avoid accidental corrupted data access.
At the end of the boot process the RST bit is de-asserted to 0. Reading this bit will return a
value of zero.
0 — Device reset disabled (reset value)
1 — Device reset enabled
1 OST OST bit will initiate a measurement immediately. If the SBYB bit is set to active, setting the
OST bit will initiate an immediate measurement, the part will then return to acquiring data as
per the setting of the ST bits in CTRL_REG2. In this mode, the OST bit does not clear itself
and must be cleared and set again to initiate another immediate measurement.
In one-shot mode, when SBYB is 0, the OST bit is an auto-clear bit. When OST is set, the
device initiates a measurement by going into active mode. Once a pressure/altitude and
temperature measurement is completed, it clears the OST bit and comes back to STANDBY
mode. User shall read the value of the OST bit before writing to this bit again.
0 SBYB This bit is sets the mode to ACTIVE, where the system will make measurements at periodic
times based on the value of ST bits.
0 — Part is in STANDBY mode (reset value)
1 — Part is ACTIVE
Table 46. System output sample rate selection
OS2 OS1 OS0 Oversample
ratio
Minimum
time between
data samples
0 0 0 1 6 ms
0 0 1 2 10 ms
0 1 0 4 18 ms
0 1 1 8 34 ms
1 0 0 16 66 ms
1 0 1 32 130 ms
1 1 0 64 258 ms
1 1 1 128 512 ms
Note: The RAW bit overrides the ALT mode and writes uncompensated pressure and
temperature data.
MPL3115A2 Table 47. CTRL_RE52 - control register 2 (address 21h) bit allocation Table 48. CTRL_RE52 - control register 2 (address 21h) bit description Table 49. CTRL_RE53 - interrupt CTRL register (address 28h) bit allocation Table 50. CTRL_RE53 - interrupt CTRL register (address 28h) bit description
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
35 / 50
13.22.2 CTRL_REG2 - control register 2 (address 27h)
Table 47. CTRL_REG2 - control register 2 (address 27h) bit allocation
Bit 7 6 5 4 3 2 1 0
Symbol reserved LOAD_OUTPUT ALARM_SEL ST[3:0]
Reset 0 0 0 0 0 0 0 0
Access R R R/W R/W R/W R/W R/W R/W
Table 48. CTRL_REG2 - control register 2 (address 27h) bit description
Bit Symbol Description
7 to 6 reserved These bits are reserved.
5 LOAD_OUTPUT This is to load the target values for SRC_PW/SRC_TW and SRC_PTH/SRC_TTH.
0 — Do not load OUT_P/OUT_T as target values (reset value)
1 — The next values of OUT_P/OUT_T are used to set the target values for the interrupts.
Notes:
This bit must be set at least once if ALARM_SEL=1
To reload the next OUT_P/OUT_T as the target values, clear and set again.
4 ALARM_SEL The bit selects the target value for SRC_PW/SRC_TW and SRC_PTH/SRC_TTH.
0 — (reset value) The values in P_TGT_MSB, P_TGT_LSB and T_TGT are used.
1 — The values in OUT_P/OUT_T are used for calculating the interrupts SRC_PW/SRC_TW
and SRC_PTH/SRC_TTH.
3 to 0 ST[3:0] Auto acquisition time step.
0 — (reset value)
Step value is 2ST Giving a range of 1 second to 215 seconds (9 hours)
13.22.3 CTRL_REG3 - interrupt CTRL register (address 28h)
Table 49. CTRL_REG3 - interrupt CTRL register (address 28h) bit allocation
Bit76543210
Symbol reserved IPOL1 PP_OD1 reserved IPOL2 PP_OD2
Reset 00000000
Access R R R/W R/W R R R/W R/W
Table 50. CTRL_REG3 - interrupt CTRL register (address 28h) bit description
Bit Symbol Description
7 to 6 reserved These bits are reserved.
5 IPOL1 The IPOL bit selects the polarity of the interrupt signal. When IPOL is '0' (default value) any
interrupt event will signalled with a logical '0'. Interrupt Polarity active high, or active low on
interrupt pad INT1.
0 — Active low (reset value)
1 — Active high
MPL3115A2 Table 51. CTRL_RE54 - interrupt enable register (address 29h) bit allocation Table 52. CTRL_RE54 - interrupt enable register (address 29h) bit description
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
36 / 50
Bit Symbol Description
4 PP_OD1 This bit configures the interrupt pin to push-pull or in open drain mode. The default value
is 0 which corresponds to push-pull mode. The open drain configuration can be used
for connecting multiple interrupt signals on the same interrupt line. push-pull/open drain
selection on interrupt pad INT1.
0 — Internal pullup (reset value)
1 — Open drain
3 to 2 reserved These bits are reserved.
1 PP_OD2 Interrupt polarity active high, or active low on interrupt pad INT2.
0 — Active low (reset value)
1 — Active high
0 PP_OD2 Push-pull/open drain selection on interrupt pad INT2.
0 — Internal pullup (reset value)
1 — Open drain
13.22.4 CTRL_REG4 - interrupt enable register (address 29h)
The corresponding functional block interrupt enable bit allows the functional block to
route its event detection flags to the system's interrupt controller. The interrupt controller
routes the enabled functional block interrupt to the INT1 or INT2 pin.
Table 51. CTRL_REG4 - interrupt enable register (address 29h) bit allocation
Bit 7 6 5 4 3 2 1 0
Symbol INT_EN_DRDY INT_EN_FIFO INT_EN_PW INT_EN_TW INT_EN_PTH INT_EN_TTH INT_EN_PCHG INT_EN_TCHG
Reset 0 0 0 0 0 0 0 0
Access R/W R/W R/W R/W R/W R/W R/W R/W
Table 52. CTRL_REG4 - interrupt enable register (address 29h) bit description
Bit Symbol Description
7 INT_EN_DRDY Interrupt enable.
0 — Data ready interrupt disabled (reset value)
1 — Data ready interrupt enabled
6 INT_EN_FIFO Interrupt enable.
0 — FIFO interrupt disabled (reset value)
1 — FIFO interrupt enabled
5 INT_EN_PW Interrupt enable.
0 — Pressure window interrupt disabled (reset value)
1 — Pressure window interrupt enabled
4 INT_EN_TW Interrupt enable.
0 — Temperature window interrupt disabled (reset value)
1 — Temperature window interrupt enabled
3 INT_EN_PTH Interrupt enable.
0 — Pressure threshold interrupt disabled (reset value)
1 — Pressure threshold interrupt enabled
MPL3115A2 Table 53 . CTRL_REGS - interrupt configuration register (address 2Ah) bit allocation Table 54 . CTRL_REGS - interrupt configuration register (address 2Ah) bit description
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
37 / 50
Bit Symbol Description
2 INT_EN_TTH Interrupt enable.
0 — Temperature threshold interrupt disabled (reset value)
1 — Temperature threshold interrupt enabled
1 INT_EN_PCHG Interrupt enable.
0 — Pressure change interrupt disabled (reset value)
1 — Pressure change interrupt enabled
0 INT_EN_TCHG Interrupt enable.
0 — Temperature change interrupt disabled (reset value)
1 — Temperature change interrupt enabled
13.22.5 CTRL_REG5 - interrupt configuration register (address 2Ah)
Table 53. CTRL_REG5 - interrupt configuration register (address 2Ah) bit allocation
Bit 7 6 5 4 3 2 1 0
Symbol INT_CFG_DRDY INT_CFG_FIFO INT_CFG_PW INT_CFG_TW INT_CFG_PTH INT_CFG_TTH INT_CFG_PCHG INT_CFG_TCHG
Reset 0 0 0 0 0 0 0 0
Access R/W R/W R/W R/W R/W R/W R/W R/W
Table 54. CTRL_REG5 - interrupt configuration register (address 2Ah) bit description
Bit Symbol Description
7 INT_EN_DRDY INT1/INT2 configuration.
0 — Interrupt is routed to INT2 pin (reset value)
1 — Interrupt is routed to INT1
6 INT_CFG_FIFO INT1/INT2 configuration.
0 — Interrupt is routed to INT2 pin (reset value)
1 — Interrupt is routed to INT1
5 INT_CFG_PW INT1/INT2 configuration.
0 — Interrupt is routed to INT2 pin (reset value)
1 — Interrupt is routed to INT1
4 INT_CFG_TW INT1/INT2 configuration.
0 — Interrupt is routed to INT2 pin (reset value)
1 — Interrupt is routed to INT1
3 INT_CFG_PTH INT1/INT2 configuration.
0 — Interrupt is routed to INT2 pin (reset value)
1 — Interrupt is routed to INT1
2 INT_CFG_TTH INT1/INT2 configuration.
0 — Interrupt is routed to INT2 pin (reset value)
1 — Interrupt is routed to INT1
1 INT_CFG_PCHG INT1/INT2 configuration.
0 — Interrupt is routed to INT2 pin (reset value)
1 — Interrupt is routed to INT1
MPL3115A2 Figure 10
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
38 / 50
Bit Symbol Description
0 INT_CFG_TCHG INT1/INT2 configuration.
0 — Interrupt is routed to INT2 pin (reset value)
1 — Interrupt is routed to INT1
INTERRUPT
CONTROLLER
INT_ENABLE INT_CFG
INT1
INT2
8 8
Temperature Change
Event Flag 0
Event Flag 2
Event Flag 1
Event Flag 3
Event Flag 4
Event Flag 5
Event Flag 6
Event Flag 7
Pressure Threshold
FIFO
Data Ready
Pressure Window
Temperature Window
Pressure Change
Temperature Threshold
Figure 9. Interrupt controller block diagram
The system's interrupt controller uses the corresponding bit field in the CTRL_REG5
register to determine the routing table for the INT1 and INT2 interrupt pins. If the bit value
is logic '0' the functional block's interrupt is routed to INT2, and if the bit value is logic '1'
then the interrupt is routed to INT1.
All interrupts routed to INT1 or INT2 are logically OR'd as illustrated in Figure 10.
One or more functional blocks can assert an interrupt pin simultaneously, therefore a
host application responding to an interrupt should read the INT_SOURCE register to
determine the appropriate sources of the interrupt.
Figure 10. INT1/INT2 pin control logic
MPL3115A2 Table 55. OFF_P - offset correction register (address 28h) bit allocation Table 56. OFF_P - offset temperature correction register (address 20h) bit allocation ser offset register (OFF_H) is exp Section 8.1.3 "Pressure/altitude" Table 57. OFF_H - altitude data user offset register (address 2Dh) bit allocation
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
39 / 50
13.23 Offset correction registers
The 2's complement offset correction registers values are used to trim the temperature,
altitude and pressure offsets that might occur over the life of the product.
13.23.1 OFF_P - offset pressure correction register (address 2Bh)
Pressure user accessible offset trim value expressed as an 8-bit, 2's complement
number. The user offset registers may be adjusted to enhance accuracy and optimize the
system performance. Range is from −512 to +508 Pa, 4 Pa/LSB.
Table 55. OFF_P - offset correction register (address 2Bh) bit allocation
Bit76543210
Symbol OFF_P[7:0]
Reset 00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
13.23.2 OFF_T - offset temperature correction register (address 2Ch)
Temperature user accessible offset trim value expressed as an 8-bit, 2's complement
number. The user offset registers may be adjusted to enhance accuracy and optimize the
system performance. Range is from −8 to +7.9375 °C, 0.0625 °C/LSB.
Table 56. OFF_P - offset temperature correction register (address 2Ch) bit allocation
Bit76543210
Symbol OFF_T[7:0]
Reset 00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
13.23.3 OFF_H - altitude data user offset register (address 2Dh)
Altitude data user offset register (OFF_H) is expressed as a 2's complement number
in meters. See Section 8.1.3 "Pressure/altitude". The user offset register provides user
adjustment to the vertical height of the altitude output. The range of values are from −128
to +127 meters.
Table 57. OFF_H - altitude data user offset register (address 2Dh) bit allocation
Bit76543210
Symbol OFF_H[7:0]
Reset 00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
MPL3115A2 PTN T TNDEX AREA E :-5 Pi Y <— metal="" l‘d="" \="" :="" 77="" (ms)="" +="" [5]="" f="" 7="" ‘="" a‘zovleent\="" 4,55t0,08="" ‘="" ‘="" \(y="" i="" (1.3)="" |="" 4x="" q="" ut="" t="" »="" 2,5510="" 05="" v="" t="" x="" .i="" ex="" 0="" 510="" osj="" top="" v‘ew="" pw="" 1="" index="" area—1="" flefl‘ifi="" embeeb="" ea="" 0t®aec="" 4%="" 5x="" 005®a="" ax="" t="" 0510,05="" mdhehq="" vtew="" y4="" 0="" 05®="" a="" bottom="" vtew="" f4444444444="" \="" him="" v‘ew="" xix="" s‘de="" v‘ew="" mechanical="" outline="" pr‘nt="" vers‘on="" not="" to="" scale="" tttle:="" lga="" 8="" i/o,="" 3="" x="" 5="" x125="" pitch,="" sensor="" t.2ma="">< mm="" pkg="" document="" no:="" qbasaoozedd="" rev:="" a="" standard.="" nonfijedec="" sotwber]="" 07="" jan="" 2016="">
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
40 / 50
14 Package information
14.1 Package dimensions
This drawing is located at http://nxp.com/files/shared/doc/
package_info/98ASA00260D.pdf.
MPL3115A2 NOTES: 1, ALL DIMENSIONS 1N MILLIMETERS, 2. DIMENSIONING AND TOLERANCING PER ASME v14. 5M71994 3. STYLE: PIN 1' van PIN 5: [NTZ PIN 2; CAP PIN s: INTI PIN 3: GND PIN 7: SDA PIN 4: VDDID PIN s: SCL @ “ELEVEN; “NE? ‘ MECHANICAL OUTLINE PRINT VERSION NOT TO SCALE TTTLE: LGA 8 I/O, DOCUMENT NOSBASAOOZEDD REV: A 3 x 5 x 125 PITCH, STANDARDzNONidEDEC SENSOR T-ZMAX MM PKG SOTWEEr] 07 JAN 2016
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
41 / 50
Figure 11. Case 98ASA00260D, LGA package
15 Soldering/landing pad information
The LGA package is compliant with the RoHS standard.
Note: Pin 1 index area marker does not have any internal electrical connections.
Handling and soldering recommendations for pressure sensors are available in
application notes AN1984 and AN3150.
1 NUEX AREAfi \ MPL3115A2 ‘23 “‘33 5X 2x 8 \77 7 0675 \ ,,,,, , 1 ,‘r, 4 1 + 5 H ‘ +77 8X OBiOOSJ +< ax="" 0.8i005="" black="" for="" package="" oljthy‘o="" red="" icr="" pcb="" landing="" pattern="" 8x="">
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
42 / 50
Figure 12. Recommended PCB landing pattern
MPL3115A2 v e. 1 " P2 Pa 3 flESiDDS ‘ E‘DDID‘IU (I) AUUXUJU All) Dr“: $11.7 Do “17 W7 ' l 15 f w m é = a so , ‘ ‘ . '* > a 6 Q e 177% ’1: <9 inma="" sectiiiin="" h="" xml:="" 35="" 1="" in="" an="" 3352010="" bu="" 5352010="" kn="" 1202010="" '0="" r="" 5502010="" 91="" 9002010="" w="" 1200:010="" nx="" .com/mpl3115a2="">
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
43 / 50
16 Tape and reel specifications
(I) Measured from centerline of sprocket hole to
centerline of pocket.
(II) Cumulative tolerance of 10 sprocket holes is
±0.20.
(III) Measured from centerline of sprocket hole to
centerline of pocket.
(IV) Other material available.
Dimensions are in millimeters.
Ao 3.35 ± 0.10
Bo 5.35 ± 0.10
Ko 1.20 ± 0.10
F 5.50 ± 0.10
P1 8.00 ± 0.10
W 12.00 ± 0.10
Figure 13. LGA 3 mm 5 mm embossed carrier tape dimensions
Pin 1 Index Area
Figure 14. Device orientation in chip carrier
17 Related documentation
The device features and operations may be described in a variety of reference
manuals, user guides, and application notes. To find the most-current versions of these
documents:
Go to the product page at nxp.com/MPL3115A2.
Click on the Documentation tab.
MPL3115A2 Table 58. Revision history
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
44 / 50
18 Revision history
Table 58. Revision history
Document ID Release date Data sheet status Change notice Supersedes
MPL3115A2 v.5.1 20160913 Technical data n.a. MPL3115A2 v.5.0
Modifications Maximum ratings table correction, TOP, value is –40 to 85 °C.
Mechanical characteristics table correction, pressure/altitude resolution in barometer mode unit
is Pa.
Mechanical characteristics table correction, pressure/altitude resolution in altimeter mode unit is
m.
MPL3115A2 v.5.0 20160816 Technical data n.a. MPL3115A2 v.4.0
MPL3115A2 v.4.0 2015 September Technical data n.a. MPL3115A2 v.3.0
MPL3115A2 v.3.0 2013 December Advanced information n.a. MPL3115A2 v.2.2
MPL3115A2 v.2.2 2012 July Advanced information n.a. MPL3115A2 v.2.1
MPL3115A2 v.2.1 2012 May Advanced information n.a. MPL3115A2 v.2.0
MPL3115A2 v.2.0 2012 April Advanced information n.a. MPL3115A2 v.1.0
MPL3115A2 v.1.0 2011 December Product preview n.a. MPL3115A2 v.0
MPL3115A2 v.0 2011 June Product preview n.a. n.a.
MPL3115A2 a des‘gn, nce nus document w hmmwwwmgmm
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
45 / 50
19 Legal information
19.1 Data sheet status
Document status1Product status2Definition
Data sheet: Product preview Development This document contains certain information on a product under development.
NXP reserves the right to change or discontinue this product without notice.
Data sheet: Advance information Qualification This document contains information on a new product. Specifications and
information herein are subject to change without notice.
Data sheet: Technical data Production NXP Semiconductors reserves the right to change the detail specifications as
may be required to permit improvements in the design of its products.
[1] Please consult the most recently issued document before initiating or completing a design.
[2] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple
devices. The latest product status information is available on the Internet at URL http://www.nxp.com.
19.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences
of use of such information.
19.3 Disclaimers
Information in this document is provided solely to enable system and
software implementers to use NXP products. There are no express or
implied copyright licenses granted hereunder to design or fabricate any
integrated circuits based on the information in this document. NXP reserves
the right to make changes without further notice to any products herein.
NXP makes no warranty, representation, or guarantee regarding the
suitability of its products for any particular purpose, nor does NXP assume
any liability arising out of the application or use of any product or circuit,
and specifically disclaims any and all liability, including without limitation
consequential or incidental damages. “Typical” parameters that may be
provided in NXP data sheets and/ or specifications can and do vary in
different applications, and actual performance may vary over time. All
operating parameters, including “typicals,” must be validated for each
customer application by customer's technical experts. NXP does not
convey any license under its patent rights nor the rights of others. NXP sells
products pursuant to standard terms and conditions of sale, which can be
found at the following address: nxp.com/salestermsandconditions.
19.4 Trademarks
Notice: All referenced brands, product names, service names and
trademarks are the property of their respective owners.
NXP — is a trademark of NXP B.V.
the NXP logo — is a trademark of NXP B.V.
Freescale — is a trademark of NXP B.V.
the Freescale logo — is a trademark of NXP B.V.
MPL3115A2
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
46 / 50
Tables
Tab. 1. Ordering information ..........................................2
Tab. 2. Pin description ...................................................3
Tab. 3. Maximum ratings ............................................... 6
Tab. 4. ESD and latchup protection characteristics .......6
Tab. 5. Mechanical characteristics ................................ 6
Tab. 6. Electrical characteristics ....................................7
Tab. 7. Serial interface pin descriptions ........................ 9
Tab. 8. I2C Slave timing values .................................... 9
Tab. 9. Mode of operation description .........................11
Tab. 10. Register address map ..................................... 18
Tab. 11. Register address map: Area A (F_Mode = 0,
FIFO disabled) ................................................ 19
Tab. 12. Register address map: Area A (F_Mode > 0,
FIFO in circular buffer or full stop mode) ......... 20
Tab. 13. Alias for DR_Status (06h) or F_Status (0Dh)
registers ...........................................................20
Tab. 14. DR_STATUS - status register (address 06h)
bit allocation .................................................... 20
Tab. 15. DR_STATUS - status register (address 06h)
bit description .................................................. 21
Tab. 16. OUT_P_MSB, OUT_P_CSB, OUT_P_LSB
- pressure and altitude data registers
(address 01h, 02h, 03h) bit allocation ............. 22
Tab. 17. OUT_T_MSB, OUT_T_LSB - temperature
data registers (address 04h, 05h) bit
allocation ......................................................... 23
Tab. 18. OUT_P_DELTA_MSB,
OUT_P_DELTA_CSB,
OUT_P_DELTA_LSB - pressure and
altitude delta register (address 07h, 08h,
09h) bit allocation ............................................23
Tab. 19. OUT_T_DELTA_MSB,
OUT_T_DELTA_LSB - temperature delta
register (address 0Ah, 0Bh) bit allocation ........24
Tab. 20. WHO_AM_I - device ID register (address
0Ch) bit allocation ........................................... 24
Tab. 21. F_STATUS - FIFO status register (address
0Dh) bit allocation ........................................... 24
Tab. 22. F_STATUS - FIFO status register (address
0Dh) bit description ......................................... 25
Tab. 23. F_STATUS - FIFO status register (address
0Dh) bit description ......................................... 25
Tab. 24. F_DATA - FIFO data register (address 0Eh)
bit allocation .................................................... 25
Tab. 25. Read accesses through F_DATA ....................26
Tab. 26. F_SETUP- FIFO setup register (address
0Fh) bit allocation ............................................26
Tab. 27. F_SETUP- FIFO setup register (address
0Fh) bit description ......................................... 27
Tab. 28. TIME_DLY - time delay register (address
10h) bit allocation ............................................27
Tab. 29. SYSMOD - system mode register (address
11h) bit allocation ............................................27
Tab. 30. SYSMOD - system mode register (address
11h) bit description ..........................................27
Tab. 31. INT_SOURCE - system interrupt status
register (address 12h) bit allocation ................ 28
Tab. 32. INT_SOURCE - system interrupt status
register (address 12h) bit description .............. 28
Tab. 33. PT_DATA_CFG - sensor data register
(address13h) bit allocation .............................. 29
Tab. 34. PT_DATA_CFG - sensor data register
(address13h) bit description ............................ 29
Tab. 35. BAR_IN_MSB, BAR_IN_LSB - barometric
pressure input register (address 14h, 15h)
bit allocation .................................................... 30
Tab. 36. P_TGT_MSB, P_TGT_LSB - pressure/
altitude target value register (address 16h,
17h) bit allocation ............................................30
Tab. 37. T_TGT- temperature target value register
(address 18h) bit allocation .............................30
Tab. 38. P_WND_LSB, P_WND_MSB - pressure/
altitude window value register (address 19h,
1Ah) bit allocation ........................................... 31
Tab. 39. T_WIN- temperature window value register
(address 18h) bit allocation .............................31
Tab. 40. P_MIN_MSB, P_MIN_CSB, P_MIN_LSB
- minimum pressure or altitude register
(address 1Ch, 1Dh, 1Eh) bit allocation ............31
Tab. 41. P_MAX_MSB, P_MAX_CSB, P_MAX_LSB
- maximum pressure or altitude register
(address 21h, 22h, 23h) bit allocation ............. 32
Tab. 42. T_MIN_MSB, T_MIN_LSB - minimum
temperature register (address 1Fh, 20h) bit
allocation ......................................................... 32
Tab. 43. T_MAX_MSB, T_MAX_LSB - minimum
temperature register (address 24h, 25h) bit
allocation ......................................................... 33
Tab. 44. CTRL_REG1 - control register 1 (address
26h) bit allocation ............................................33
Tab. 45. CTRL_REG1 - control register 1 (address
26h) bit description ..........................................33
Tab. 46. System output sample rate selection .............. 34
Tab. 47. CTRL_REG2 - control register 2 (address
27h) bit allocation ............................................35
Tab. 48. CTRL_REG2 - control register 2 (address
27h) bit description ..........................................35
Tab. 49. CTRL_REG3 - interrupt CTRL register
(address 28h) bit allocation .............................35
Tab. 50. CTRL_REG3 - interrupt CTRL register
(address 28h) bit description ...........................35
Tab. 51. CTRL_REG4 - interrupt enable register
(address 29h) bit allocation .............................36
Tab. 52. CTRL_REG4 - interrupt enable register
(address 29h) bit description ...........................36
Tab. 53. CTRL_REG5 - interrupt configuration
register (address 2Ah) bit allocation ................37
Tab. 54. CTRL_REG5 - interrupt configuration
register (address 2Ah) bit description ..............37
Tab. 55. OFF_P - offset correction register (address
2Bh) bit allocation ........................................... 39
MPL3115A2
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
47 / 50
Tab. 56. OFF_P - offset temperature correction
register (address 2Ch) bit allocation ................39
Tab. 57. OFF_H - altitude data user offset register
(address 2Dh) bit allocation ............................ 39
Tab. 58. Revision history ............................................... 44
MPL3115A2
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
48 / 50
Figures
Fig. 1. Block diagram ................................................... 2
Fig. 2. 8-pin LGA pinout ............................................... 3
Fig. 3. Typical application diagram ...............................3
Fig. 4. I2C slave timing diagram ................................ 10
Fig. 5. I2C bus transmission signals .......................... 11
Fig. 6. Mode transition diagram ..................................11
Fig. 7. Polling - no FIFO ............................................ 13
Fig. 8. Interrupt - no FIFO ..........................................14
Fig. 9. Interrupt controller block diagram ....................38
Fig. 10. INT1/INT2 pin control logic ..............................38
Fig. 11. Case 98ASA00260D, LGA package ............... 40
Fig. 12. Recommended PCB landing pattern ...............42
Fig. 13. LGA 3 mm 5 mm embossed carrier tape
dimensions ...................................................... 43
Fig. 14. Device orientation in chip carrier .....................43
MPL3115A2
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
MPL3115A2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved
Data sheet: Technical data Rev. 5.1 — 13 September 2016
49 / 50
Contents
1 General description ............................................ 1
2 Features and benefits .........................................1
3 Applications .........................................................2
4 Ordering information .......................................... 2
5 Block diagram ..................................................... 2
6 Pinning information ............................................ 3
6.1 Pinning ............................................................... 3
6.2 Pin description ................................................... 3
7 System connections ........................................... 3
8 Mechanical and electrical specifications .......... 4
8.1 Terminology ....................................................... 4
8.1.1 Resolution .......................................................... 4
8.1.2 Accuracy ............................................................ 4
8.1.2.1 Offset ................................................................. 4
8.1.2.2 Linearity ............................................................. 4
8.1.2.3 Absolute pressure ..............................................5
8.1.2.4 Span ...................................................................5
8.1.3 Pressure/altitude ................................................ 5
8.2 Absolute maximum ratings ................................ 5
8.3 Mechanical characteristics .................................6
8.4 Electrical characteristics .................................... 7
9 Digital interface ................................................... 9
9.1 I2C characteristics ............................................. 9
9.2 I2C operation ................................................... 10
10 Modes of operation ...........................................11
10.1 OFF ..................................................................12
10.2 STANDBY ........................................................ 12
10.3 ACTIVE ............................................................ 12
11 Quick start setup .............................................. 12
12 Functionality ...................................................... 15
12.1 Factory calibration ........................................... 15
12.2 Barometer/altimeter function ............................15
12.2.1 Barometric input .............................................. 15
12.3 Temperature function .......................................16
12.4 Autonomous data acquisition ...........................16
12.5 FIFO .................................................................16
12.6 External interrupts ............................................16
12.6.1 Reach target threshold pressure/altitude
(SRC_PTH) ......................................................16
12.6.2 Reach window target pressure/altitude
(SRC_PW) ....................................................... 16
12.6.3 Reach target threshold temperature
(SRC_TTH) ...................................................... 17
12.6.4 Reach window target temperature
(SRC_TW) ....................................................... 17
12.6.5 Pressure/altitude change (SRC_PCHG) ..........17
12.6.6 Temperature change (SRC_TCHG) ................ 17
12.6.7 Data ready ....................................................... 17
12.6.8 FIFO event .......................................................17
12.6.9 Pressure/altitude and temperature delta ..........17
12.6.10 Min/max data value storage ............................ 17
13 Register descriptions ....................................... 18
13.1 STATUS - sensor status register (address
00h) ..................................................................20
13.2 DR_STATUS - status register (address 06h) ... 20
13.2.1 Data registers with F_MODE = 00 (FIFO
disabled) .......................................................... 21
13.3 OUT_P_MSB, OUT_P_CSB, OUT_P_LSB -
pressure and altitude data registers (address
01h, 02h, 03h) ................................................. 22
13.3.1 Data registers with F_MODE = 00 ...................22
13.4 OUT_T_MSB, OUT_T_LSB - temperature
data registers (address 04h, 05h) ....................23
13.5 OUT_P_DELTA_MSB,
OUT_P_DELTA_CSB,
OUT_P_DELTA_LSB - pressure and altitude
delta register (address 07h, 08h, 09h) .............23
13.6 OUT_T_DELTA_MSB,
OUT_T_DELTA_LSB - temperature delta
register (address 0Ah, 0Bh) .............................24
13.7 WHO_AM_I - device ID register (address
0Ch) ................................................................. 24
13.8 FIFO setup registers ........................................24
13.8.1 F_STATUS - FIFO status register (address
0Dh) ................................................................. 24
13.8.2 F_DATA - FIFO data register (address 0Eh) ....25
13.8.3 F_SETUP- FIFO setup register (address
0Fh) ..................................................................26
13.9 TIME_DLY - time delay register (address
10h) ..................................................................27
13.10 SYSMOD - system mode register (address
11h) ..................................................................27
13.11 INT_SOURCE - system interrupt status
register (address 12h) ..................................... 28
13.12 PT_DATA_CFG - sensor data register
(address13h) ....................................................29
13.13 BAR_IN_MSB, BAR_IN_LSB - barometric
pressure input register (address 14h, 15h) ...... 29
13.14 P_TGT_MSB, P_TGT_LSB - pressure/
altitude target value register (address 16h,
17h) ..................................................................30
13.15 T_TGT- temperature target value register
(address 18h) .................................................. 30
13.16 P_WND_LSB, P_WND_MSB - pressure/
altitude window value register (address 19h,
1Ah) ................................................................. 30
13.17 T_WIN- temperature window value register
(address 18h) .................................................. 31
13.18 P_MIN_MSB, P_MIN_CSB, P_MIN_LSB
- minimum pressure or altitude register
(address 1Ch, 1Dh, 1Eh) .................................31
13.19 P_MAX_MSB, P_MAX_CSB, P_MAX_LSB
- maximum pressure or altitude register
(address 21h, 22h, 23h) .................................. 32
13.20 T_MIN_MSB, T_MIN_LSB - minimum
temperature register (address 1Fh, 20h) ......... 32
13.21 T_MAX_MSB, T_MAX_LSB - maximum
temperature register (address 24h, 25h) ......... 33
13.22 Control registers .............................................. 33
13.22.1 CTRL_REG1 - control register 1 (address
26h) ..................................................................33
MPL3115A2
NXP Semiconductors MPL3115A2
I2C precision pressure sensor with altimetry
13.22.2 CTRL_REG2 - control register 2 (address
27h) ..................................................................35
13.22.3 CTRL_REG3 - interrupt CTRL register
(address 28h) .................................................. 35
13.22.4 CTRL_REG4 - interrupt enable register
(address 29h) .................................................. 36
13.22.5 CTRL_REG5 - interrupt configuration
register (address 2Ah) ..................................... 37
13.23 Offset correction registers ............................... 39
13.23.1 OFF_P - offset pressure correction register
(address 2Bh) .................................................. 39
13.23.2 OFF_T - offset temperature correction
register (address 2Ch) .....................................39
13.23.3 OFF_H - altitude data user offset register
(address 2Dh) ..................................................39
14 Package information .........................................40
14.1 Package dimensions ........................................40
15 Soldering/landing pad information ..................41
16 Tape and reel specifications ............................43
17 Related documentation .................................... 43
18 Revision history ................................................ 44
19 Legal information .............................................. 45
© NXP B.V. 2016. All rights reserved
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
Released on 13 September 2016

Products related to this Datasheet

MPL3115A2 BOARD WITH FRDM-KL25Z
WEATHER SHIELD
EVAL BOARD FOR MPL3115A2
PHOTON WEATHER SHIELD
BREAKOUT BOARD FOR MPL3115A2