Freescale Semiconductor

Document Number: MMA955xL

Data Sheet: Advance Information

Rev. 1, 10/2011

An Energy Efficient Solution by Freescale

This document contains information on a new product. Specifications and information herein

are subject to change without notice.

© 2011 Freescale Semiconductor, Inc. All rights reserved.

Intelligent Motion-Sensing

Platform

The MMA955xL device 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.

The MMA955xL device is programmed and configured with the CodeWarrior

Development Studio for Microcontrollers software, version 10.1 or later. This

standard integrated design environment enables customers to quickly

implement custom algorithms and features to exactly match their application

needs.

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.

Hardware 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

•

communication with host processor

is 0x4C. (This can be customized by firmware.)

•

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

•

16-KB flash memory

•

2-KB 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

16-pin LGA

3 mm x 3 mm x 1 mm

Case 2094-01

MMA955xL

Top and bottom view

Top view

Pin connections

1

2

3

4

5

67

8

9

13

12

11

10

16 15 14

RGPIO7/AN1/

TPMCH1

BKGD-MS

/RGPIO9

RESETB

SCL0/RGPIO0

SCLK

RGPIO6/AN0

TPMCH0

RGPIO5/PDB_A/

INT_O

RGPIO4/INT