This document describes the features and characteristics of the MMA7456L digital output accelerometer, including signal conditioning, low pass filter, temperature compensation, self-test, configurable 0g detection, and quick motion detection.
The MMA7456L is a capacitive‑micromachined accelerometer that provides digital output via I²C or SPI. It features selectable acceleration ranges (±2 g, ±4 g, ±8 g), self‑test, level and pulse detection, low‑voltage operation (2.4 V‑3.6 V), and a standby mode for battery‑powered devices. The device includes built‑in temperature compensation and a robust design capable of surviving 5,000 g shocks.
Typical applications include image stability in cell phones, free‑fall detection in hard‑disk drives and laptops, pedometers, and general motion‑sensing or event‑recording systems. Ordering information, pin‑out diagrams, electrical ratings, and register definitions are provided for system designers.
| Maximum Shock Acceleration | 5000 g |
|---|---|
| Supply Current (operation mode) | 437 µA |
| Operating Temperature Range | -40 °C to 85 °C |
The device can survive shocks up to 5,000 g.
The 0 g offset can be customer‑calibrated using the assigned 0 g registers and the g‑Select setting.