Freescale Semiconductor Energy Efficient Solutions Xtrinsic MMA8452Q, Технические данные: Техническая информация

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Freescale Semiconductor
Document Number: MMA8452Q
Data Sheet: Technical Data
Rev. 9, 07/2014
An Energy Efficient Solution by Freescale
© 2010-2014 Freescale Semiconductor, Inc. All rights reserved.
Xtrinsic MMA8452Q 3-Axis,
12-bit/8-bit Digital Accelerometer
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
filter filtered data as well as non-filtered data available real-time. The device can
be configured to generate inertial wakeup 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
• 1.95V to 3.6V supply voltage
• 1.6V to 3.6V interface voltage
• ±2g/±4g/±8g dynamically selectable full-scale
• Output Data Rates (ODR) from 1.56 Hz to 800 Hz
• 99
μ
g/
√
Hz noise
• 12-bit and 8-bit digital output
• I
2
C digital output interface
• Two programmable interrupt pins for six interrupt sources
• Three embedded channels of motion detection
— Freefall or Motion Detection: 1 channel
— Pulse Detection: 1 channel
— Transient 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
– RoHS compliant
– Current Consumption: 6
μ
A to 165
μ
A
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, pulse detection for button replacement)
ORDERING INFORMATION
Part Number Temperature Range Package Description Shipping
MMA8452QT -40°C to +85°C QFN-16 Tray
MMA8452QR1 -40°C to +85°C QFN-16 Tape and Reel
MMA8452Q
16 PIN QFN
3 mm x 3 mm x 1 mm
CASE 2077-02
Top and Bottom View
Top View
Pin Connections
1
2
3
4
5 9
10
11
12
13
14 15 16
8 7 6
NC
VDD
NC
VDDIO
BYP
DNC
SCL
GND
NC
GND
INT1
GND
INT2
SA0
NC
SDA