Freescale MMA955xL Xtrinsic Intelligent
Motion-Sensing Platform
Freescale's Xtrinsic Intelligent Motion-Sensing Platform is a member of the Xtrinsic family of intelligent sensor platforms. The MMA955xL Xtrinsic Intelligent Motion-Sensing Platform incorporates dedicated accelerometer MEMS transducers, signal conditioning, data conversion, and a 32-bit programmable microcontroller. With this unique blend, it transforms Freescale's Xtrinsic Intelligent Motion-Sensing Platform into an intelligent, high-precision, motion-sensing platform able to manage multiple sensor inputs. This MMA955xL Xtrinsic Intelligent Motion-Sensing Platform can make system-level decisions required for sophisticated applications such as gesture recognition, pedometer functionality, tilt compensation and calibration, and activity monitoring.
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Features
Hardware
- 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
- 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
- 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
Software
- This device can be programmed to provide any of the following:
Orientation detection (portrait/landscape)
High-g/Low-g threshold detection
Pulse detection (single, double and directional tap)
Tilt detection
Auto wake/sleep
Embedded, smart FIFO
Power management
Pedometer
Applications
- Mobile phones/PMP/PDA/digital cameras
Orientation detection (portrait/landscape)
Image stability
Tilt control enabled with higher resolution
Gesture recognition
Tap to control
Auto wake/sleep for low power consumption
- Smartbooks/ereaders/netbooks/laptops
Anti-theft
Freefall detection for hard-disk drives
Orientation detection
Tap detection
- Pedometers
- Gaming and toys
- Activity monitoring in medical applications
- Security
Anti-theft
Shock detection
Tilt
- Fleet monitoring, tracking
Dead reckoning
System auto-wake on movement
Detection
Shock recording
Anti-theft
- Power tools and small appliances
Tilt
Safety shut-off
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