The QST QMI8658A datasheet provides specifications, features, and interface details for the 6‑axis inertial measurement unit with motion co‑processor.
The QMI8658A is a 6‑D MEMS inertial measurement unit that integrates a 3‑axis gyroscope and a 3‑axis accelerometer. It is offered in a compact 14‑pin LGA package (2.5 × 3.0 × 0.86 mm) and includes a built‑in motion‑co‑processor for applications such as smartphones, game controllers, robotic vacuums, and automotive security systems.
Key features include low‑noise sensors (13 mdps/√Hz gyroscope, 150 µg/√Hz accelerometer), a 1536‑byte FIFO, programmable data rates and filters, and support for multiple host interfaces (MIPI™ I3C, I2C, 3‑wire or 4‑wire SPI). The device operates over a wide temperature range of –40 °C to 85 °C and offers various motion‑detection functions such as tap, pedometer, and wake‑on‑motion.
| Gyroscope Noise Density | 13 mdps/√Hz |
|---|---|
| Accelerometer Noise Density | 150 µg/√Hz |
| Package Size | 2.5 x 3.0 x 0.86 mm, 14‑pin LGA |
| Operating Temperature Range | -40 °C to 85 °C |
| FIFO Buffer Size | 1536 bytes |
| Supported Host Interfaces | MIPI™ I3C, I2C, 3‑wire SPI, 4‑wire SPI |
It supports MIPI™ I3C, I2C, and both 3‑wire and 4‑wire SPI interfaces.
The device operates from –40 °C up to 85 °C.
It includes a 1536‑byte FIFO buffer for sensor data.