STMicroelectronics LIS2DU12TR LGA-12 3-Axis Accelerometer Sensor ROHS

The LIS2DU12TR operates from a wide supply voltage range of 1.62V to 3.6V. It also features an independent I/O supply pin (Vdd_IO), allowing the digital interface to be powered separately from the analog core, which provides flexibility when interfacing with microcontrollers using different logic voltage levels (e.g., 1.8V or 3.3V).

This sensor supports three high-speed digital interfaces: the standard I²C and SPI protocols, as well as the modern MIPI I3C® interface. This versatility allows for easy integration into a wide array of host systems, from simple microcontrollers to complex application processors, enabling efficient data transfer and configuration.

The LIS2DU12TR includes a dedicated internal processing engine for motion and acceleration detection. Key features are free-fall detection, wake-up from inactivity, recognition of single and double taps, monitoring of activity/inactivity states, and 6D/4D orientation sensing. These functions run on the sensor itself, reducing the computational load on the main host CPU.

The 128-level FIFO buffer allows the accelerometer to store multiple samples internally. This enables the host processor to enter a low-power sleep mode for extended periods while the sensor continues collecting data. The host can then wake up and read a batch of data in a single transaction, significantly reducing the overall system's active power consumption and bus traffic.