AN2989 Datasheet, PDF (1/28 Pages) STMicroelectronics – high performance ultra low-power 3-axis accelerometer

AN2989
Application note
LIS331DLM: ±2 g /±4 g /±8 g digital output
high performance ultra low-power 3-axis accelerometer
Introduction
This document provides application information for the low-voltage 3-axis digital output
linear MEMS accelerometer housed in an LGA package.
The LIS331DLM is a high performance ultra low-power 3-axis linear accelerometer which
belongs to the “nano” family of MEMS accelerometers, with digital I²C/SPI serial interface
standard output.
The device features ultra low-power operational modes that allow advanced power saving
and smart sleep to wake functions.
The LIS331DLM has dynamically user-selectable full scales of ±2 g /±4 g /±8 g and is
capable of measuring acceleration with output data rates from 0.5 Hz to 400 Hz.
The self-test capability allows the user to check the functioning of the sensor in the final
application.
The device can be configured to generate interrupt signals in response to inertial
wakeup/free-fall events or based on the position of the device itself.
The thresholds and timing of interrupt generators are programmable by the end user “on the
fly”. The LIS331DLM is available in a small, thin plastic land grid array (LGA) package and is
guaranteed to operate over an wide temperature range of -40 °C to +85 °C.
June 2009
Doc ID 15761 Rev 1
1/28
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