The recommended power-on sequence is to power up the accelerometer (ACC) first, followed by the magnetometer (MAG). This ensures proper initialization and avoids any potential issues with the device.
The LSM303DLH has multiple operating modes, including low-power, normal, and high-resolution modes. The mode selection is done through the CTRL1 and CTRL2 registers. Refer to the datasheet for specific register settings and mode descriptions.
The internal low-pass filter is used to reduce noise and aliasing in the accelerometer and magnetometer outputs. It can be enabled or disabled through the CTRL1 register. The filter cutoff frequency is approximately 220 Hz.
The magnetometer requires calibration to compensate for hard-iron and soft-iron effects. This can be done through a process called 'hard-iron calibration' and 'soft-iron calibration'. Refer to application notes and example code for specific calibration procedures.
The maximum sampling rate of the LSM303DLH is 10 kHz for the accelerometer and 80 Hz for the magnetometer. However, the actual sampling rate may be limited by the host system's I2C or SPI bus speed.
LSM303DLH datasheet
by STMicroelectronics
