AN3308 datasheet(1/52 Pages) STMICROELECTRONICS

部件名	AN3308

功能描述	This document describes the low-voltage 3-axis digital output linear MEMS accelerometer provided in an LGA package

PDF	52 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 52 page

January 2011

Doc ID 18198 Rev 1

1/52

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.

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