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. In addition it features an on-chip interrupt controller enabling motion-based applications without use of a microcontroller.
The BMA255 senses tilt, motion, inactivity and shock vibration in cell phones, handhelds, computer peripherals, man-machine interfaces, virtual reality features and game controllers.

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