AN4662 Datasheet, PDF (1/43 Pages) STMicroelectronics – This document describes the low-voltage 3-axis digital output linear MEMS accelerometer provided

AN4662
Application note
LIS2HH12: MEMS digital output motion sensor ultra-low-power
high-performance 3-axis "pico" accelerometer
Introduction
This document describes the low-voltage 3-axis digital output linear MEMS accelerometer provided in
an LGA package.
The LIS2HH12 is an ultra-low-power high-performance 3-axis linear accelerometer belonging to the
“pico” 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 (Activity) and return-to-sleep (Inactivity) functions.
The LIS2HH12 has dynamic user-selectable full scales of ±2g/±4g/±8g and it is capable of measuring
accelerations with output data rates from 10 Hz to 800 Hz.
The device may be configured to generate two independent interrupt signals by detecting an inertial
wake-up/free-fall event as well as by the position of the device itself. Thresholds and timing for both
interrupt generators are programmable by the end user on the fly.
The LIS2HH12 has an integrated 32-level first-in, first-out (FIFO) buffer allowing the user to store data in
order to limit intervention by the host processor.
The LIS2HH12 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 smartphones and
wearable devices and in applications such as pedometers, tilt monitoring and activity recognition.
April 2015
DocID027579 Rev 1
1/43
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