PCF8545BTT/AJ datasheet by NXP Semiconductors

PCF8545BTT/AJ Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for PCF8545BTT/AJ?
  The recommended operating voltage range for PCF8545BTT/AJ is 2.5V to 5.5V.
• How do I configure the I2C bus speed for PCF8545BTT/AJ?
  The I2C bus speed for PCF8545BTT/AJ can be configured by setting the SCL clock frequency, which can be up to 400 kHz in standard mode and up to 1 MHz in fast mode.
• What is the maximum current consumption of PCF8545BTT/AJ?
  The maximum current consumption of PCF8545BTT/AJ is 1.5 mA (typical) at 3.3V supply voltage.
• How do I reset the PCF8545BTT/AJ?
  The PCF8545BTT/AJ can be reset by applying a low pulse to the RST pin or by performing a software reset by writing a specific code to the reset register.
• What is the purpose of the INT pin on PCF8545BTT/AJ?
  The INT pin on PCF8545BTT/AJ is an interrupt output that can be used to signal to the microcontroller that an event has occurred, such as a change in the input state or a timer overflow.