MMA8451Q: ±2g/±4g/±8g, Low g, 14-bit Digital Accelerometer

Overview

The NXP^® MMA8451Q is a low-power, three-axis capacitive micromachined accelerometer with 14 bits of resolution, featuring:

Embedded functions with flexible user-programmable options, configurable to two interrupt pins
Embedded interrupt functions for overall power savings relieving the host processor from continuously polling data
Access to both low-pass filtered data as well as high-pass filtered data, which minimizes the data analysis required for jolt detection and faster transitions
Inertial wake-up interrupt signals from any combination of the configurable embedded functions allowing the MMA8451Q to monitor events and remain in a low-power mode during periods of inactivity

1.95 to a 3.6-volt supply voltage
1.6 to 3.6-volt interface voltage
±2g/±4g/±8g dynamically selectable full-scale
Output data rates (ODR) from 1.56 Hz to 800 Hz
99 μg/√Hz noise
14-bit and 8-bit digital output
I²C digital output interface (operates to 2.25 MHz with 4.7 kΩ pull-ups)
Two programmable interrupt pins for seven interrupt sources
Three embedded channels of motion detection
- Freefall or motion detection: one channel
- Pulse detection: one channel
- Jolt detection: one channel
Orientation (portrait/landscape) detection with programmable hysteresis
Automatic ODR change for auto-wake and return to sleep
32 sample FIFO
High pass filter data available per sample and through the FIFO
Self-test
RoHS compliant
Current consumption: 6 μA–165 μA
This product is included in NXP^®.s product longevity program, with assured supply for a minimum of 10 years after launch

1.95 to a 3.6-volt supply voltage
1.6 to 3.6-volt interface voltage
±2g/±4g/±8g dynamically selectable full-scale
Output data rates (ODR) from 1.56 Hz to 800 Hz
99 μg/√Hz noise
14-bit and 8-bit digital output
I²C digital output interface (operates to 2.25 MHz with 4.7 kΩ pull-ups)
Two programmable interrupt pins for seven interrupt sources
Three embedded channels of motion detection
- Freefall or motion detection: one channel
- Pulse detection: one channel
- Jolt detection: one channel
Orientation (portrait/landscape) detection with programmable hysteresis
Automatic ODR change for auto-wake and return to sleep
32 sample FIFO
High pass filter data available per sample and through the FIFO
Self-test
RoHS compliant
Current consumption: 6 μA–165 μA
This product is included in NXP^®.s product longevity program, with assured supply for a minimum of 10 years after launch