- 产品品牌：
- 飞思卡尔Freescale
- 产品型号：
- MMA8452Q
- 制作工艺：
- 其它
- 输出信号：
- 开关型
Freescale Semiconductor MMA845
Rev 3, 10/20
Technical Data
An Energy Efficient Solution by Freescale
3-Axis, 12-bit/8-bit
MMA8452Q
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
MMA8452Q: 3-AXIS DIGITAL
interrupt pins. Embedded interrupt functions allow for overall power savings
ACCELEROMETER
relieving the host processor from continuously polling data.
±2g/±4g/±8g
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 Top and Bottom View
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
*99 μg/√Hz noise
* 12-bit and 8-bit digital output
16 PIN QFN
2
*I C digital output interface (operates to 2.25 MHz with 4.7 kΩ pull-up) 3 mm x 3 mm x 1 mm
* 2 programmable interrupt pins for 6 interrupt sources CASE 2077-01
* 3 embedded channels of motion detection
– Freefall or Motion Detection: 1 channel
Top View
– Pulse Detection: 1 channel
– Jolt Detection: 1 channel
NC NC VDD
* Orientation (Portrait/Landscape) detection with set hysteresis
16 15 14
* Automatic ODR change for Auto-WAKE and return to SLEEP
VDDIO 1 13 NC
* High Pass Filter Data available real-time
*Self-Test BYP 2 12 GND
* RoHS compliant
NC 3 MMA8452Q 11 INT1
* Current Consumption: 6 μA – 165 μA
Typical Applications SCL 4 10 GND
* E-Compass applications
GND 5 9 INT2
* Static orientation detection (Portrait/Landscape, Up/Down, Left/Right, Back/
6 7 8
Front position identification)
* Notebook, E-Reader and Laptop Tumble and Freefall Detection NC
SDA SA0
* Real-time orientation detection (virtual reality and gaming 3D user position
feedback) Pin Connections
* 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)
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
