SMTPA220 datasheet by STMicroelectronics

SMTPA220 Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for the SMTPA220?
  The recommended operating voltage range for the SMTPA220 is 1.65V to 3.6V.
• How do I configure the SMTPA220 for I2C or SPI interface?
  The SMTPA220 can be configured for I2C or SPI interface by setting the MODE pin high or low, respectively. For I2C, connect MODE to VCC, and for SPI, connect MODE to GND.
• What is the maximum data transfer rate of the SMTPA220?
  The maximum data transfer rate of the SMTPA220 is 10 Mbps for I2C and 20 Mbps for SPI.
• How do I handle the interrupt signal (INT) from the SMTPA220?
  The interrupt signal (INT) is an active-low, open-drain output. It should be connected to a pull-up resistor and a microcontroller input to detect interrupts generated by the SMTPA220.
• What is the purpose of the WAKEUP pin on the SMTPA220?
  The WAKEUP pin is used to wake up the SMTPA220 from standby mode. It is an active-high input that can be connected to a push-button or a microcontroller output.