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MMA955XL

更新时间： 2024-01-19 05:52:29
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飞思卡尔 - FREESCALE /
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25页 263K
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Intelligent Motion-Sensing Platform

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MMA955XL 数据手册

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Freescale Semiconductor  
Data Sheet: Advance Information  
An Energy Efficient Solution by Freescale  
Document Number: MMA955xL  
Rev. 1, 10/2011  
Intelligent Motion-Sensing  
Platform  
MMA955xL  
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.  
Top and bottom view  
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.  
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.  
16-pin LGA  
3 mm x 3 mm x 1 mm  
Case 2094-01  
Top view  
Hardware Features  
16 15 14  
RGPIO7/AN1/  
TPMCH1  
RGPIO6/AN0  
TPMCH0  
13  
V
DD  
1
2
3
4
•
Three accelerometer operating ranges:  
BKGD-MS  
/RGPIO9  
12  
11  
– ±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)  
RGPIO5/PDB_A/  
INT_O  
RESETB  
SCL0/RGPIO0  
SCLK  
10  
9
V
SS  
V
5
SS  
RGPIO4/INT  
•
•
Integrated temperature sensor  
6
7
8
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  
•
•
•
•
•
•
•
•
•
•
•
•
•
•
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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  
Pin connections  
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  
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.  
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