acelerometro
Document Number: MMA8452Q
Rev 4.1, 08/2011
Freescale Semiconductor
Data Sheet: 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 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 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.
Top and Bottom View
Features
NC
NC
VDD
Top View
16
15
14
VDDIO
1
13
NC
BYP
2
12
GND
NC
3
11
INT1
SCL
4
10
GND
GND
5
9
INT2
7
8
NC
6
SA0
•
•
•
•
•
•
16 PIN QFN
3 mm x 3 mm x 1 mm
CASE 2077-01
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
I2C digital output interface (operates to 2.25 MHz with 4.7 kΩ pullup)
Two programmable interrupt pins for six interrupt sources
Three 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-T
est
RoHS
Rev 4.1, 08/2011
Freescale Semiconductor
Data Sheet: 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 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 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.
Top and Bottom View
Features
NC
NC
VDD
Top View
16
15
14
VDDIO
1
13
NC
BYP
2
12
GND
NC
3
11
INT1
SCL
4
10
GND
GND
5
9
INT2
7
8
NC
6
SA0
•
•
•
•
•
•
16 PIN QFN
3 mm x 3 mm x 1 mm
CASE 2077-01
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
I2C digital output interface (operates to 2.25 MHz with 4.7 kΩ pullup)
Two programmable interrupt pins for six interrupt sources
Three 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-T
est
RoHS