STMicroelectronics LSM6DSDTR LGA-14 6-Axis IMU Accelerometer Gyro

The LSM6DSDTR supports both SPI (Serial Peripheral Interface) and I²C (Inter-Integrated Circuit) digital communication protocols. The SPI interface operates at speeds up to 10 MHz, while the I²C interface supports fast mode up to 1 MHz. The interface selection is configured via dedicated pins (CS for SPI, SDA/SCL for I²C), providing flexibility for integration with various host microcontrollers like STM32, ESP32, and Raspberry Pi.

The full-scale ranges for both the accelerometer (±2/±4/±8/±16 g) and gyroscope (±125 to ±4000 dps) are software programmable via specific configuration registers accessible over the SPI or I²C bus. You can dynamically select the optimal range for your application to balance resolution and measurement span. The sensor's output data rate is also configurable, allowing you to trade off between power consumption and measurement bandwidth.

The integrated 9 kB FIFO (First-In, First-Out) buffer allows the LSM6DSDTR to store batches of accelerometer and gyroscope data internally. This feature enables the host processor to enter low-power sleep modes for extended periods while the sensor continues sampling. The processor can then wake up and read a large block of stored data in a single transaction, significantly reducing system power consumption and minimizing host interrupt load in battery-powered IoT and wearable applications.

The LSM6DSDTR operates from a supply voltage (VDD) range of 1.71V to 3.6V, making it compatible with both 3.3V and lower-voltage battery-powered systems. In its high-performance mode with both sensors active, typical current consumption is 0.9 mA. The device offers multiple lower-power modes where the gyroscope or accelerometer can be selectively powered down, enabling significant further reductions in current draw for applications where continuous full-performance monitoring is not required.