Introduction

MMA8452Q is a smart low-power, three-axis, capacitive micromachine acceleration sensor with 12-bit resolution. This acceleration sensor has a rich embedded performance, featured with flexible user programmable options and two interruption pins configuration. The embedded interruption function can save the overall power consumption and remove the burden of constantly polling the data in the main processor.

Besides, MMA8452Q has a user optional range of ±2g / ±4g/ ±8g, which can output high-pass filtering data and non-filtered data in real time. This device can configure an embedded function to generate an inertial wake-up interrupt signal, which enables MMA8452Q to maintain a low-power mode in the static state while monitoring the event.

Performance Parameters

Power Supply Voltage：1.95 V to 3.6 V

Interface Voltage：1.6 V to 3.6 V

±2g/±4g/±8g  Optional dynamic range

Output data rate (ODR) range： 1.56 Hz to 800 Hz

Noise：99μg/√Hz

12 bits and 8 bits digital outputs;

I2C digital output interface (up to 2.25 MHz when the pull-up resistor is 4.7 kΩ);

Two programmable interruption pins applied to six interruption sources;

Three motion detection embedded channels: free fall detection, pulse detection, shaking detection;

Direction (transverse/longitudinal) detection with setting lag compensation;

Automatic arousal and auto-dormant ODR can be automatically altered;

High-pass filtering data can be exported in real time;

Power consumption： 6 μA – 165 μA   

Connection Diagram