AN3308 Datasheet, PDF (1/52 Pages) STMicroelectronics – This document describes the low-voltage 3-axis digital output linear MEMS accelerometer provided in an LGA package

AN3308
Application note
LIS3DH: MEMS digital output motion sensor
ultra low-power high performance 3-axis “nano” accelerometer
Introduction
This document describes the low-voltage 3-axis digital output linear MEMS accelerometer
provided in an LGA package.
The LIS3DH is an ultra low-power high performance 3-axis linear accelerometer belonging
to the “nano” family, with a 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-up and return-to-sleep functions.
The LIS3DH has dynamic user selectable full scales of ±2g/±4g/±8g/±16g and it is capable
of measuring accelerations with output data rates from 1 Hz to 5 kHz.
The device may be configured to generate interrupt signals by an independent inertial wake-
up/free-fall event as well as by the position of the device itself. Thresholds and timing of the
interrupt generator are programmable by the end user on the fly.
Automatic programmable sleep-to-wake-up and return-to-sleep functions are also available
for enhanced power saving.
The LIS3DH has an integrated 32-level first in first out (FIFO) buffer allowing the user to
store data for host processor intervention reduction.
The LIS3DH is available in a small thin plastic land grid array package (LGA) and it is
guaranteed to operate over an extended temperature range from -40 °C to +85 °C.
The ultra small size and weight of the SMD package make it an ideal choice for handheld
portable applications such as cell phones and PDAs, or any other application where
reduced package size and weight are required.
January 2011
Doc ID 18198 Rev 1
1/52
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