This datasheet provides detailed information on the features and characteristics of the MMA7455L.
The MMA7455L is a 3‑axis low‑g digital output accelerometer with selectable 2 g, 4 g and 8 g ranges. It features I²C/SPI interfaces, low‑power standby mode, self‑test, and programmable interrupt thresholds for motion, level and pulse detection. Typical applications include handheld devices, hard‑disk free‑fall detection, laptops, navigation, and 3‑D gaming.
The document contains detailed pin descriptions, maximum ratings, operating characteristics, functional block diagrams, and mechanical outline. It also provides tables for sensitivity, resolution, bandwidth, and timing parameters, as well as guidance on configuring detection modes and interrupt handling.
| Analog Supply Voltage (AVDD) | 2.4 V to 3.6 V |
|---|---|
| Supply Current (Standby) | 400 pA |
| Package | 3 mm × 5 mm × 1 mm LGA‑14 |
| Sensitivity (2 g range) | 64 LSB/g |
| Resolution (2 g range) | 13.9‑17.3 count/g |
The device operates from –40 °C to 85 °C.
Set the MODE bits in the mode control register to 00 to select Standby Mode.
The accelerometer can be configured for 2 g, 4 g, or 8 g ranges via the g‑Select feature.