PCA9537DP datasheet by Philips Semiconductors

PCA9537DP Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that the PCA9537DP can support?
  The PCA9537DP can support I2C bus frequencies up to 400 kHz.
• How do I configure the PCA9537DP to operate in input mode?
  To configure the PCA9537DP to operate in input mode, set the corresponding bit in the configuration register (register 0x06) to '1'. This will enable the input mode for the respective pin.
• What is the maximum current that the PCA9537DP can sink or source per pin?
  The PCA9537DP can sink or source up to 25 mA per pin.
• How do I reset the PCA9537DP?
  The PCA9537DP can be reset by pulling the RESET pin low for at least 1 ms. This will reset the device to its default state.
• What is the purpose of the internal pull-up resistors on the PCA9537DP?
  The internal pull-up resistors on the PCA9537DP are used to pull up the I2C bus lines (SDA and SCL) to the positive supply voltage (VCC) when the device is not actively driving the bus.