The recommended power-on sequence is to power up the VDDIO pin first, followed by the VDD pin. This ensures that the internal voltage regulators are properly initialized.
For high-accuracy applications, it is recommended to use the highest possible ODR (Output Data Rate) and enable the low-pass filter to reduce noise. Additionally, the device should be calibrated regularly to compensate for temperature and other environmental factors.
The INT1 and INT2 pins are interrupt pins that can be configured to generate interrupts based on specific events, such as data ready, FIFO threshold, or sensor thresholds. This allows the microcontroller to be notified when new data is available or when a specific condition is met.
The FIFO buffer on the LSM9DS1TR is used to store sensor data. To handle the FIFO, the microcontroller should regularly read data from the FIFO to prevent overflow. The FIFO threshold can be set to generate an interrupt when the buffer is full or reaches a certain level.
The main difference between the LSM9DS1TR and the LSM9DS0TR is the presence of a FIFO buffer in the LSM9DS1TR. The LSM9DS0TR does not have a FIFO buffer, and data must be read directly from the sensor registers.
LSM9DS1TR datasheet
by STMicroelectronics
