BMA255 datasheet(2/119 Pages) ETC2

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BMA255

Data sheet

Page 2

BST-BMA255-DS004-04 | Revision 1.1 | December 2013

Bosch Sensortec

third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Note: Specifications within this document are subject to change without notice.

BMA255

12 BIT, DIGITAL, TRIAXIAL ACCELERATION SENSOR WITH INTELLIGENT

-CHIP MOTION-TRIGGERED INTERRUPT CONTROLLER

Key features

 Ultra-Small package

LGA package (12 pins), footprint 2mm x 2mm,

height 0.95mm

 Digital interface

SPI (4-wire, 3-wire), I²C, 2 interrupt pins

VDDIO voltage range: 1.2V to 3.6V

 Programmable functionality

Acceleration ranges ±2g/±4g/±8g/±16g

Low-pass filter bandwidths 1kHz - <8Hz

 On-chip FIFO

Integrated FIFO with a depth of 32 frames

 On-chip interrupt controller

Motion-triggered interrupt-signal generation for

- new data

- any-motion (slope) detection

- tap sensing (single tap / double tap)

- orientation recognition

- flat detection

- low-g/high-g detection

- motion inactivity detection

 Ultra-low power

Low current consumption, short wake-up time,

advanced features for system power management

 Temperature sensor

 RoHS compliant, halogen-free

Typical applications

 Display profile switching

 Menu scrolling, tap / double tap sensing

 Gaming

 Pedometer / step counting

 Free-fall detection

 E-compass tilt compensation

 Drop detection for warranty logging

 Advanced system power management for mobile applications

General description

The BMA255 is a triaxial, low-g acceleration sensor with digital output for consumer

applications. It allows measurements of acceleration in three perpendicular axes. An evaluation

circuitry (ASIC) converts the output of a micromechanical acceleration-sensing structure

(MEMS) that works according to the differential capacitance principle.

Package and interfaces of the BMA255 have been defined to match a multitude of hardware

requirements. Since the sensor features an ultra-small footprint and a flat package it is

ingeniously suited for mobile applications.

The BMA255 offers a variable VDDIO voltage range from 1.2V to 3.6V and can be programmed

to optimize functionality, performance and power consumption in customer specific applications.

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