Bosch BHI260AB Smart Sensor Hub, 6-Axis IMU + 32-bit MCU (Fuser2), Ultra-Low Power, Sensor Fusion, I²C/SPI, LGA-44

The BHI260AB integrates a programmable 32-bit Fuser2 MCU alongside the IMU, enabling complex sensor fusion algorithms like orientation tracking and activity recognition to run directly on the chip. This offloads processing from your main host CPU, drastically reducing system power consumption and simplifying software development compared to using a raw IMU sensor.

The BHI260AB provides both I²C and SPI digital host interfaces. The I²C interface supports high-speed mode up to 3.4 MHz, while the SPI interface can operate at speeds up to 50 MHz. You can select the preferred interface during hardware configuration to match your system's requirements.

Yes. The BHI260AB includes two SPI master and two I²C master interfaces, allowing it to act as a central hub for additional external sensors like magnetometers, pressure sensors, or environmental sensors. This data can be fused with the internal IMU data by the on-chip MCU for more comprehensive context awareness.

The BHI260AB requires a single 1.8V DC supply for its core logic and sensor analog front-end. It includes an integrated voltage regulator. It is crucial to ensure your power supply provides a stable 1.8V, as this is a low-voltage CMOS device.

The core Bosch BSX sensor fusion libraries (for orientation, etc.) are preloaded in the 144 KB on-chip ROM and are not user-modifiable. However, the 32-bit Fuser2 MCU is programmable, allowing you to write and run your own custom algorithms and application logic using the 256 KB of available SRAM, enabling tailored functionality for your specific use case.