The NXP® MMA8451QR1 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 MMA8451QR1 to monitor events and remain in a low-power mode during periods of inactivity
Feature
- 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
