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3轴加速度传感器MMA8452Q--12位ADC\8G


 The MMA8452Q is a smart low-power, three-axis, capacitive micromachined
accelerometer with 12 bits of resolution. This accelerometer is packed with
embedded functions with flexible user programmable options, configurable to two
interrupt pins. Embedded interrupt functions allow for overall power savings
relieving the host processor from continuously polling data.
The MMA8452Q has user selectable full scales of ±2g/±4g/±8g with high pass
filtered data as well as non filtered data available real-time. The device can be
configured to generate inertial wake-up interrupt signals from any combination of
the configurable embedded functions allowing the MMA8452Q to monitor events
and remain in a low power mode during periods of inactivity. The MMA8452Q is
available in a 3 mm x 3 mm x 1 mm QFN package.
Features
• 1.95 V to 3.6 V supply voltage
• 1.6 V to 3.6 V interface voltage
• ±2g/±4g/±8g dynamically selectable full-scale
• Output Data Rates (ODR) from 1.56 Hz to 800 Hz
• 120 μg/√Hz noise
• 12-bit and 8-bit digital output
• I2C digital output interface (operates to 400 kHz)
• 2 programmable interrupt pins for 6 interrupt sources
• 3 embedded channels of motion detection
– Freefall or Motion Detection: 1 channel
– Pulse Detection: 1 channel
– Jolt Detection: 1 channel
• Orientation (Portrait/Landscape) detection with set hysteresis
• Automatic ODR change for Auto-WAKE and return to SLEEP
• High Pass Filter Data available real-time
• Self-Test
• 10,000g high shock survivability
• RoHS compliant
Typical Applications
• E-Compass applications
• Static orientation detection (portrait/landscape, up/down, left/right, back/front
position identification)
• Notebook, E-Reader and Laptop Tumble and Freefall Detection
• Real-time orientation detection (virtual reality and gaming 3D user position
feedback)
• Real-time activity analysis (pedometer step counting, freefall drop detection
for HDD, dead-reckoning GPS backup)
• Motion detection for portable product power saving (Auto-SLEEP and Auto-WAKE for cell phone, PDA, GPS, gaming)
• Shock and vibration monitoring (mechatronic compensation, shipping and warranty usage logging)
• User interface (menu scrolling by orientation change, tap detection for button replacement)

生产厂商:Freescale Semiconductor China Ltd.    www.freescale.com

datasheet:
MMA8452Q.pdf
下载: pdf 文件
 


 
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