AIS326DQ datasheet by STMicroelectronics

AIS326DQ Frequently Asked Questions (FAQs)

• What is the recommended power-on sequence for the AIS326DQ?
  The recommended power-on sequence is to apply VDDIO before VDD. This ensures that the internal voltage regulators are properly powered up.
• How do I configure the interrupt pins?
  The interrupt pins (INT1 and INT2) can be configured through the INT_CFG register. The interrupt sources can be selected through the INT_SRC register.
• What is the purpose of the self-test feature?
  The self-test feature is used to verify the integrity of the sensor and the analog-to-digital converter (ADC). It applies a known stimulus to the sensor and checks the output.
• How do I calculate the acceleration values from the output data?
  The output data is in 16-bit two's complement format. The acceleration values can be calculated by multiplying the output data by the sensitivity (typically 0.061 mg/LSB) and the gain (set through the FS register).
• What is the purpose of the FIFO mode?
  The FIFO mode allows the accelerometer to store a limited number of samples in a First-In-First-Out (FIFO) buffer. This allows the microcontroller to read the data at a slower rate than the sampling rate.