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FXLS8964AFR3 Accelerometers 3-axis MEMS accelerometer

General description

FXLS8964AFR3 is a compact 3-axis MEMS accelerometer designed for use in automotive remote keyless entry applications that require ultra low-power wake-up on motion. The part supports both high performance and low-power operating modes,allowing maximum flexibility to meet the resolution and power needs for various use case implementations. A number of advanced, integrated digital features enable designers to reduce the overall system power consumption and simplify host data collection.

Features and benefits

±2/4/8/16 g user-selectable, full-scale measurement ranges

12-bit acceleration data

8-bit temperature sensor data

Low noise: 280 µg/√Hz in high performance mode

Selectable ODRs up to 3200 Hz; Flexible Performance mode allows for custom ODRs with programmable decimation (resolution) and idle-time settings

144 byte output data buffer (FIFO/LIFO) capable of storing up to 32 12bit X/Y/Z data triplets

Flexible Sensor Data Change Detection (SDCD) function for realizing motion or no motion, high-g/low-g, freefall, and other inertial events

Autonomous orientation detection function(Portrait/Landscape/Up/Down)

Dedicated low-power motion-detection mode with one wire interface option

12-bit vector magnitude calculation

Trigger input for synchronizing data collection with an external system

I2C interface frequencies up to 1 MHz; 3- and 4-wire SPI interface with clock frequencies up to 4 MHz

Bidirectional self-test diagnostic: Device motion or orientation does not impact the result.

Applications

Automotive security and convenience

Key fob motion wake-up

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