Specifications
Manufacturer: STMicroelectronics
Device Type: Ultra-low-power three-axis digital MEMS accelerometer, tape and reel surface mount packaging
Core Electrical Specifications
Operating supply voltage: 1.62 V ~ 3.6 V
Adjustable full-scale acceleration ranges: ±2g, ±4g, ±8g, ±16g
Digital output resolution options: 12-bit and 14-bit
Programmable output data rate ranging from 1.6 Hz to 1600 Hz
Current consumption details
Ultra-low power mode: 0.35 μA typical
Normal continuous sensing mode: 14 μA typical
Power-down mode current is nearly zero
Built-in on-chip temperature sensor
Operating temperature range: -40 ℃ ~ +85 ℃
Package dimension: 2 mm × 2 mm × 0.7 mm, 12-pin LGA tiny package
Key Features
Equipped with I2C and SPI dual communication interfaces for convenient connection with various microcontrollers
Integrated multiple motion detection functions: wake-up trigger, free fall detection, single tap and double tap gesture identification, stationary and motion state classification
Embedded large-capacity internal FIFO buffer to cache sampling data and cut down host communication times
Multiple configurable power modes to flexibly match power consumption and measurement precision demands
Two independent programmable interrupt pins to actively send motion event notifications to main control chips
Optimized internal circuit design greatly reduces noise interference, delivering stable measurement results under slight vibration conditions
Strong mechanical shock resistance and internal electrostatic protection
Extremely compact outline greatly saves PCB layout area
Halogen-free packaging materials comply with RoHS environmental standards
Typical Application Scenarios
Smart bracelets, watches and other wearable fitness tracking devices
Wireless Bluetooth earbuds posture detection and wake-up control
Smartphone standby wake-up and motion auxiliary sensing
Battery-powered IoT vibration monitoring sensor nodes
Portable handheld devices fall protection system
Small household smart equipment gesture and tilt triggering modules
