STMicroelectronics LSM6DSK320X 6-Axis Inertial Measurement Unit (IMU)
STMicroelectronics LSM6DSK320X 6-Axis Inertial Measurement Unit (IMU) is a compact, low-power, high-performance IMU that integrates a 3-axis digital low-g accelerometer with selectable full-scale ranges up to ±16g, a 3-axis digital high-g accelerometer with selectable full-scale ranges up to ±320g, and a 3-axis digital gyroscope. Its advanced architecture processes acceleration and angular-rate data through four independent channels: User Interface (UI), OIS, EIS, and high-g acceleration. Designed for demanding motion-sensing applications, the LSM6DSK320X enables intense movement tracking, shock and concussion monitoring, and other high-dynamic use cases.
The device features a distinct gyroscope architecture with a fully differential readout chain and enhanced mechanical symmetry, delivering outstanding vibration immunity and resilience to external disturbances. It also supports edge AI functions through a finite state machine (FSM) for configurable motion detection and a machine learning core (MLC) for context awareness, enabling intelligent features for personal electronics, IoT, sports, and wearables, and drone applications.
To optimize power consumption, the STMicroelectronics LSM6DSK320X includes adaptive self-configuration (ASC), which automatically adjusts sensor settings in real time based on detected motion patterns or MLC events, without host intervention. The digital subsystem also integrates ST's sensor fusion low-power (SFLP) technology for spatial orientation. In addition, a dedicated high-g acceleration sensor with an independent channel and dedicated filtering ensures reliable shock detection, making the device well-suited for sports, concussion detection, impact detection, emergency call, and drone applications.
Features
- Enhanced vibration immunity
- PFAS-, lead-, and BPA-free
- Quad-channel architecture for UI, EIS, OIS, and high-g data processing
- "Smart, always-aware" experience for system power optimization
- Dual accelerometer channels
- Low-g channel ±2/±4/±8/±16g full scale
- High-g channel ±32/±64/±128/±256/±320g full scale
- Gyroscope full scale: ±250/±500/±1000/±2000/±4000dps
- SPI/I2C and MIPI I3C® v1.1 serial interface with main processor data synchronization
- Auxiliary SPI and MIPI I3C v1.1 for OIS data output for gyroscope and accelerometer
- Programmable finite state machine for accelerometer (high-g and low-g), gyroscope, and external sensor data processing with a high rate at 960Hz
- Machine learning core with exportable features and filters for AI applications
- Embedded adaptive self-configuration (ASC)
- Embedded sensor fusion low-power (SFLP) algorithm
- OIS is configurable from the auxiliary or primary interface
- EIS has a dedicated channel on the primary interface with dedicated filtering
- Advanced pedometer, step detector, and step counter
- Significant motion detection, tilt detection
- Standard interrupts: free-fall, wake-up, 6D/4D orientation, click and double click, high-g wake-up, and high-g shock
- Smart FIFO up to 4.5KB
- Embedded temperature sensor
- Independent I/O supply
- 1.62V to 3.6V I2C voltage range
- 1.08V to 3.6V SPI/MIPI I3C extended voltage range
- Supply current
- 6-axis configuration at 0.67mA in combo high-performance mode
- 9-axis configuration at 0.80mA in combo high-performance mode
- Compact footprint of 2.5mm x 3mm x 0.83mm
- ECOPACK and RoHS-compliant
Applications
- Wearables
- Smart tags
- Drones
- Asset monitors
- Event data recorders (EDRs)
- Structural health monitoring (SHM) of buildings and bridges
- Personal protective equipment (severity of falls or impacts)
- Gaming controllers
Additional Resources
- Datasheet
- Technical Note: Handling, Mounting, and Soldering Guidelines for MEMS Devices
- Design Tip: 1-Point or 3-Point Tumble Sensor Calibration
- Design Tip: Residual Linear Acceleration by Gravity Subtraction to Enable Dead-Reckoning
- Design Tip: Noise Analysis and Identification in MEMS Sensors, Allan, Time, Hadamard, Overlapping, Modified, Total Variance
Pin Description
Complete Your Design
STMicroelectronics Standard Products
A broad range of drop-in replacements for general-purpose analog ICs, discretes, and serial EEPROMs.