ICM‑42688‑P, TDK‑InvenSense High‑Performance 6‑Axis MEMS IMU Inertial Measurement Unit, integrating 3‑Axis Gyroscope + 3‑Axis Accelerometer

Package: 14‑LGA, 2.5 × 3 × 0.91 mm

Supply Voltage VDD/VDDIO: 1.71 V ~ 3.6 V

Gyroscope Full‑Scale Range (FSR): ±15.625 / 31.25 / 62.5 / 125 / 250 / 500 / 1000 / 2000 dps (programmable)

Accelerometer Full‑Scale Range (FSR): ±2 g / ±4 g / ±8 g / ±16 g (programmable)

Gyroscope Noise Density: 0.0028 dps/√Hz

Accelerometer Noise Density: 70 μg/√Hz

Output Data Rate (ODR): Gyroscope up to 32 kHz, Accelerometer up to 16 kHz

Communication Interfaces: SPI (24 MHz), I2C (1 MHz), I3C‑SM

FIFO Buffer: 2 KB to reduce MCU load

Built‑in Functions: APEX motion engine: step counting, tilt detection, tap detection, motion‑to‑wake, free‑fall detection; on‑chip temperature sensor, self‑test

Functions & Benefits

Collects 3‑axis angular velocity (gyroscope) and 3‑axis acceleration (accelerometer) simultaneously, outputs digital motion data for MCU attitude algorithm processing to obtain device tilt angle, rotation, vibration and motion status.

Integrated APEX hardware motion‑processing engine handles step counting, wake‑up and attitude detection inside the chip, reducing host‑controller workload.

Supports high‑speed SPI and high output data rate with excellent vibration immunity, suitable for high‑speed moving devices.

FIFO buffer stores sensor data in batches; MCU reads data intermittently to lower system power consumption.

Applications

Typical Industry Scenarios

‑ Drones & FPV racers: Flight‑controller attitude calculation and stabilization control for high‑speed motion with motor‑vibration resistance; mainstream IMU for flight controllers

‑ Robotics: Attitude detection and balance control for collaborative robots, mobile AGVs and humanoid robots

‑ AR/VR & gaming devices: Attitude tracking and gesture recognition for headsets and controllers

‑ Wearables: Smart bands, smartwatches and sports devices for step counting and motion detection

‑ Industrial equipment: Industrial attitude modules, vibration monitoring, indoor SLAM positioning, handheld measuring instruments

‑ IoT smart hardware: Motion detection, attitude reporting and free‑fall detection