Design Files
2 design files
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Models
NXP® E-Compass Software
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Printed Circuit Boards and Schematics
TWRPI-MMA845xQ Schematic
±2g/±4g/±8g, Low g, 14-bit Digital Accelerometer
MMA8451Q Receive alerts
This product is in “End of Life” status, we recommend FXLS8971CF or FXLS8974CF as a replacement. In cases where MMA845xQ is absolutely required, customers may reach out to Rochester electronics to check available stock.
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
Product Details
Block Diagram
Features
Key Features
- 1.95 to a 3.6 V supply voltage
- 1.6 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
- 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
- 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
Three Embedded Channels of Motion Detection
- Freefall or motion detection: one channel
- Pulse detection: one channel
- Jolt detection: one channel
Product Longevity Program
- This product is included in the NXP Product Longevity program with assured supply for a minimum of 10 years after launch
Part numbers include: MMA8451Q, MMA8451QT.
Documentation
Quick reference to our documentation types.
1-5 of 24 documents
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Data Sheet
MMA8451Q, 3-Axis, 14-bit/8-bit Digital Accelerometer - Data SheetFeatured
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Application Note
AN4068, Embedded Orientation Detection Using the MMA8451, 2, 3Q - Application NotesFeatured
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Application Note
AN4071, High-Pass Filtered Data and Transient Detection Using the MMA8451, 2, 3Q - Application NotesFeatured
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Application Note
AN4070, Motion and Freefall Detection Using the MMA8451, 2, 3Q - Application NotesFeatured
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Application Note
AN4073, Using the 32 Sample First In First Out (FIFO) in the MMA8451Q - Application NotesFeatured
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Engineering Services
To get further assistance directly from NXP, please see our Engineering Services.
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Independent Design House (IDH)
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