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Home » NEWEST Products » New by Manufacturer » Freescale Semiconductor » MMA955xL Motion-Sensing Platform - Freescale
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Freescale MMA955xL Intelligent Motion-Sensing Platform

Freescale MMA955xL Intelligent
Motion-Sensing Platform

Freescale's MMA955xL Intelligent Motion-Sensing Platform is a member of Freescale’s Xtrinsic family of intelligent sensor platforms. This device incorporates dedicated accelerometer MEMS transducers, signal conditioning, data conversion, and a 32-bit programmable microcontroller. This unique blend transforms Freescale’s MMA955xL into an intelligent, high precision, motion-sensing platform able to manage multiple sensor inputs. This device can make system-level decisions required for sophisticated applications such as gesture recognition, pedometer functionality, tilt compensation and calibration, and activity monitoring.

Using the master I2C port, the MMA955xL device can manage secondary sensors, such as pressure sensors, magnetometers, or gyroscopes. This allows sensor initialization, calibration, data compensation, and computation functions to be off-loaded from the system application processor. The MMA955xL device also acts as an intelligent sensing hub and a highly configurable decision engine. Total system power consumption is significantly reduced because the application processor stays powered down until absolutely needed.

Features
  • Three accelerometer operating ranges:
    • ±2g suits most hand gestures (orientation detection and tit control) and freefall. For tap detection, ±4g and ±8g are supported.
    • ±4g covers most regular human dynamics (walking and jogging)
    • ±8g detects most abrupt activities (gaming)
  • Integrated temperature sensor
  • One slave SPI or I2C interface operating at up to 2 Mbps, dedicated to communication with host processor. Default value of the I2C, 7-bit address is 0x4C. (This can be customized by firmware.)
  • One master I2C interface operating at up to 400 kbps that can be used to communicate with external sensors
  • Eight selectable output data rates (ODR), from 488 Hz to 3.8 Hz
  • 10, 12, 14, and 16-bit trimmed ADC data formats available
  • 1.8V supply voltage

  • 32-bit ColdFire V1 CPU with MAC unit
  • Extensive set of power-management features and low-power modes
  • Integrated ADC can be used to convert external analog signals
  • Single-Wire, Background-Debug Mode (BDM) pin interface
  • 16KB flash memory
  • 2KB Random Access Memory
  • ROM-based flash controller and slave-port, command-line interpreter
  • Two-channel timer with input capture, output capture, or edge-aligned PWM
  • Programmable delay block for scheduling events relative to start of frame
  • A 16-bit, modulo timer for scheduling periodic events
  • Minimal external component requirements
  • RoHS compliant (-40 to +85ºC), 16-pin, 3 x 3 x 1-mm LGA package
Block Diagram
Block Diagram
  • Freescale Semiconductor
  • Sensors