LSM6DSK320XTR (STMicroelectronics, 6-axis IMU inertial sensor)

 One-sentence positioning

Vibration-enhanced 6-axis MEMS IMU integrating dual accelerometers and a gyroscope with embedded AI core, supporting low-g motion capture and high-shock detection up to ±320g.

 Key Specifications

1. Sensing Elements

- 3-axis low-g accelerometer: selectable full scale ±2 / ±4 / ±8 / ±16 g

- 3-axis high-g accelerometer: selectable full scale ±32 / ±64 / ±128 / ±256 / ±320 g

- 3-axis gyroscope: selectable full scale ±250 / ±500 / ±1000 / ±2000 / ±4000 dps

- Embedded temperature sensor

2. Package: LGA‑14L, 2.5×3.0×0.83 mm, tape reel packaging (TR suffix = tape reel)

3. Operating temperature: -40℃ ~ +85℃

4. Interfaces: I²C / SPI / MIPI I3C v1.1; auxiliary SPI/I3C dedicated for OIS stabilization channel

5. Memory: up to 4.5 KB FIFO

6. Power consumption: typical 0.67 mA in 6-axis high-performance mode

7. Electrical: I²C domain 1.62~3.6 V; SPI/I3C domain 1.08~3.6 V with independent IO power supply

8. Compliance: RoHS, ECOPACK2 eco-friendly package

### Functions & Features

1. Parallel acquisition via dual acceleration channels: simultaneous measurement of normal attitude motion (low-g) and impact/shock (high-g). The low-g signal will not saturate and get lost under heavy shock, solving the common pain point of signal distortion on conventional IMUs during shock events.

2. Embedded Edge AI

   - MLC Machine Learning Core: performs on-site scene classification (fall detection, impact, gait, vibration classification) without continuous data polling by MCU.

   - FSM Finite State Machine: configurable trigger events such as free fall, tap detection, attitude wake-up, etc.

   - ASC Adaptive Self-Configuration: the sensor automatically switches sampling rate / full scale range according to motion to reduce power consumption.

3. SFLP Low-Power Sensor Fusion: outputs quaternions (game rotation vector) on-chip for attitude calculation to offload the main controller.

4. 4-channel independent architecture: four separate processing paths for UI main application, EIS electronic image stabilization, OIS optical image stabilization and high-g shock detection without mutual interference, greatly improving vibration resistance.

5. Event logging, shock peak capture, motion wake-up and FIFO bulk data buffering to reduce host interrupt load.

### Applications

- Drones: attitude stabilization, crash shock recording

- Wearables / PPE Personal Protective Equipment: fall detection, impact severity monitoring, motion tracking

- Smartphones / Cameras: OIS optical image stabilization, EIS electronic image stabilization

- Smart tags / Asset monitoring: logistics shock & vibration logging, cargo health monitoring

- Structural health monitoring: vibration monitoring for bridges and equipment

- Event Data Recorder (EDR), game controllers, sports equipment, portable industrial devices

Selling Point

Compared with conventional 6-axis IMUs, its core advantages are dual accelerometers, ultra-high ±320g shock range, on-chip AI and superior vibration immunity. It is ideal for scenarios requiring both normal attitude sensing and violent impact capture. Conventional single-accelerometer IMUs saturate immediately under heavy shock, while this device can retain both subtle attitude signals and shock peak values at the same time.