MMA8452QR1 Description

The MMA8452Q is a smart, low-power, three-axis, capacitive, micromachined accelerometer with 12 bits of resolution. This accelerometer is packed with 

embedded functions with flexible user-programmable options, configurable to two interrupt pins. Embedded interrupt functions allow for overall power 

savings relieving the host processor from continuously polling data. The MMA8452Q has user-selectable full scales of ±2 g/±4 g/±8 g with high-pass 

filtered data and non-filtered data are available in real time.

MMA8452QR1 Features

1.95 V to 3.6 V supply voltage

1.6 V to 3.6 V interface voltage

±2 g/±4 g/±8 g dynamically selectable full-scale

Output data rates (ODR) from 1.56 Hz to 800 Hz

99 μg/√Hz noise

12-bit and 8-bit digital output

I²C digital output interface

Two programmable interrupt pins for six interrupt sources

MMA8452QR1 Applications

E-compass applications

Static orientation detection (portrait/landscape, up/down, left/right, back/front position identification)

Notebook, e-reader, and laptop tumble and freefall detection

Real-time orientation detection (virtual reality and gaming 3D user position feedback)

Real-time activity analysis (pedometer step counting, freefall drop detection for HDD, dead-reckoning GPS backup)

Motion detection for portable product power saving (auto-sleep and auto-wake for cell phone, PDA, GPS, gaming)

Shock and vibration monitoring (mechatronic compensation, shipping, and warranty usage logging)

User interface (menu scrolling by orientation change, pulse detection for button replacement)