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MMA8450Q Digital Accelerometer


Freescale's intelligent low power and noise accelerometer


Freescale - MMA8450Q Digital AccelerometerFreescale Semiconductor's MMA8450Q accelerometer is an intelligent low power and low noise, 3mm x 3mm x 1mm capacitive micromachined accelerometer featuring 12 bits of resolution. This accelerometer is packed with many flexible user programmable embedded functions that are available with two configurable interrupt pins. MMA8450Q has user selectable full scales of ±2g/±4g/±8g, and it is capable of measuring accelerations with output data rates (ODR) of 400Hz, 200Hz, 100Hz, 50Hz, 12.5Hz, and 1.563Hz. These output data rates correspond to sample intervals from 2.5ms to 640ms.

The device can be configured to generate inertial wakeup interrupt signals when a programmable acceleration threshold is crossed on any one of the three sensed axes. Acceleration and time thresholds of interrupt generators are programmable by the end user.    Click here to view diagram

Features
  • I2C digital output interface (operates up to 400kHz Fast Mode)
  • Automatic ODR change for auto-wake and return-to-sleep
  • Programmable 2 interrupt pins for 8 interrupt sources
  • 1.71V to 1.89V supply voltage
  • ±2g/±4g/±8g dynamically selectable full-scale
  • Output data rate (ODR) from 400Hz to 1.563Hz
  • 400µg/vHz noise at normal mode ODR = 400Hz
  • 10,000g high shock survivability
  • 12-bit digital output
  • Embedded 4 channels of motion detection
    • Freefall or motion detection: 2 channels
    • Pulse detection: 1 channel
    • Transient detection: 1 channel
  • 32 sample FIFORoHS Compliant
  • Self-test
  • RoHS compliant

Digi-Key P/N Freescale P/N Description Output Type Datasheet
MMA8450QT-ND MMA8450QT IC ACCEL I2C 2G/4G/8G 16QFN Digital Datasheet

Associated Development Tools

Digi-Key P/N Freescale P/N Description Voltage Datasheet
LFSTBEB8450-ND LFSTBEB8450 BOARD DEV ACCELEROMETER MMA8450 5V Datasheet
RD3924MMA8450Q-ND RD3924MMA8450Q BOARD DEV ACCELEROMETER MMA8450 5V Datasheet