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MPR03x Proximity Capacitive Touch Sensor Controllers


Freescale’s touch sensor controllers with increased sensitivity, specialized feature set

MPR03x Proximity Capacitive Touch Sensor ControllersFreescale Semiconductor's MPR03X are Inter-Integrated Circuit Communication (I²C) driven capacitive touch sensor controllers, optimized to manage two electrodes with interrupt functionality or three electrodes with the interrupt disabled. These controllers can accommodate wide ranges of implementations due to their increased sensitivity and specialized feature sets.

When using an I²C protocol, devices require separate addresses as no chip select line is available. In order to use two MPR03x devices in the same system, the MPR031 and MPR032 are each available where different I²C addresses are assigned to each part number. Thus, in a final system, four to six electrodes can be achieved by putting one of each of these on the same I²C bus without requiring extra communication lines or specialized hardware.


Features

  • 6µA average supply current
  • Compact 2mm x 2mm x 0.65mm 8-lead µDFN package
  • Supports up to three touch pads
  • Only one external component needed
  • Intelligent touch detection capability
  • 4µA maximum shutdown current
  • 1.71V to 2.75V operation
  • Threshold based detection with hysteresis
  • I²C interface with optional IRQ
  • Multiple devices in a system allow for up to six electrodes
  • -40°C to +85°C operating temperature range

Applications

  • PC peripherals
  • MP3 players
  • Remote controls
  • Mobile phones
  • Lighting controls

Digi-Key P/N Manufacturer's P/N Description Datasheet
MPR031EPR2CT-ND MPR031EPR2 IC CTLR TOUCH SENSOR 8-DFN Datasheet
MPR032EPR2CT-ND MPR032EPR2 IC CTLR TOUCH SENSOR 8-DFN Datasheet

Related Parts

Digi-Key P/N Manufacturer's P/N Description Datasheet
DEMOMPR031-ND DEMOMPR031 BOARD DEMO FOR MPR031 CTLR Datasheet
KITMPR03XEVM-ND KITMPR03XEVM KIT EVAL FOR MPR03X Datasheet