PCA9561PW,112 datasheet by NXP Semiconductors

PCA9561PW,112 Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for PCA9561PW,112?
  The recommended operating voltage range for PCA9561PW,112 is 2.3 V to 5.5 V, with a typical voltage of 3.3 V.
• How do I configure the PCA9561PW,112 for I2C-bus operation?
  To configure the PCA9561PW,112 for I2C-bus operation, you need to connect the SCL pin to a pull-up resistor and the SDA pin to a pull-up resistor and a series resistor. The pull-up resistors should be connected to the supply voltage (VCC).
• What is the maximum clock frequency supported by PCA9561PW,112?
  The PCA9561PW,112 supports clock frequencies up to 400 kHz in Standard-mode and up to 1 MHz in Fast-mode.
• How do I handle bus contention on the PCA9561PW,112?
  To handle bus contention on the PCA9561PW,112, you can use the built-in arbitration mechanism, which allows multiple masters to share the bus. The device also has a bus-hold feature that prevents data corruption during bus contention.
• Is the PCA9561PW,112 compatible with 5 V systems?
  Yes, the PCA9561PW,112 is compatible with 5 V systems, but it requires an external voltage regulator to step down the voltage to the recommended operating range of 2.3 V to 5.5 V.