Specifications
Manufacturer: STMicroelectronics
Device Type: 9-axis integrated MEMS inertial measurement unit (IMU), packaged system-in-package module integrating 3-axis accelerometer, 3-axis gyroscope and 3-axis magnetometer, tape-and-reel surface mount component for motion tracking and attitude calculation applicationsSTMicroele…
Electrical & Core Parameter Specifications
Operating supply voltage: 1.9 V ~ 3.6 V
Digital data output resolution: 16-bit for all three sensing units
Selectable measurement ranges
- 3-axis Accelerometer: ±2 g / ±4 g / ±8 g / ±16 g
- 3-axis Gyroscope: ±245 dps / ±500 dps / ±2000 dps
- 3-axis Magnetometer: ±4 Gs / ±8 Gs / ±12 Gs / ±16 Gs
Built-in high-precision temperature sensor for ambient temperature acquisition
Communication interfaces: I2C (100 kHz / 400 kHz) + standard SPI dual interfaces
Operating temperature range: -40 °C ~ +85 °C
Package: 24-pin LGA compact surface mount package
Built-in configurable FIFO data buffer to reduce MCU data polling frequency
Main Built-in Functional Features
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Independent power domain design
Accelerometer, gyroscope and magnetometer modules can be separately activated or switched into power-down mode. Users can turn off unused sensing units according to actual working demands to cut down overall power consumption, ideal for battery-powered portable terminals.
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Rich motion event detection & interrupt mechanism
Programmable hardware interrupt pins support tap/double-tap detection, free fall monitoring, tilt judgment, activity/inactivity recognition. Once preset motion conditions are triggered, the chip outputs interrupt signals to wake up the main controller rapidly.
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Flexible data sampling configuration
Each sensor supports independently adjustable output data rates. Users can match sampling frequency for static tilt measurement, dynamic motion capture and high-speed rotation scenarios respectively, balancing data precision and power loss.
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Integrated auxiliary calibration resources
Internal offset compensation registers facilitate host-side static bias correction of gyroscope and accelerometer, effectively lowering attitude drift during long-time continuous operation. All pins are equipped with internal electrostatic protection to resist minor electromagnetic interference in conventional environments.
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Dual communication bus compatibility
I2C interface is suitable for wiring-limited miniaturized equipment; SPI bus delivers higher transmission speed for high-frequency continuous data acquisition scenarios, compatible with all mainstream 3.3V embedded microcontrollers such as STM32 series.
Typical Application Scenarios
Drone flight control attitude solving and positioning systems
Wearable devices motion tracking, step counting and gesture recognition
Robotic arm posture feedback and balance vehicle control modules
Portable measuring instruments vibration and tilt monitoring
Indoor pedestrian navigation and asset orientation tracking terminals
VR/AR peripheral motion sensing and interactive control equipment
Note: This chip has been marked obsolete by STMicroelectronics and is no longer in mass production, gradually replaced by upgraded 9-axis IMU products such as LSM6DSOX+LIS3MDL combined modulesSTMicroele…
