PCA9600DP,118 datasheet by NXP Semiconductors

PCA9600DP,118 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of PCA9600DP,118?
  A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the analog and digital grounds separate and connect them at a single point. Use a decoupling capacitor (e.g., 100nF) close to the VDD pin.
• How do I ensure reliable communication between the PCA9600DP,118 and the microcontroller?
  Use a pull-up resistor (e.g., 1kΩ) on the SDA line and a pull-down resistor (e.g., 1kΩ) on the SCL line. Ensure the microcontroller's I2C clock frequency is within the PCA9600DP,118's specified range (100kHz to 400kHz).
• What is the maximum current that the PCA9600DP,118 can sink or source?
  The PCA9600DP,118 can sink up to 20mA per output pin and source up to 10mA per output pin. However, the total current drawn from the device should not exceed 100mA.
• How do I configure the PCA9600DP,118 for I2C-bus or SMBus operation?
  For I2C-bus operation, connect the SDA and SCL pins to the microcontroller's I2C pins. For SMBus operation, connect the SDA pin to the SMBus data pin and the SCL pin to the SMBus clock pin. Configure the PCA9600DP,118's control register (0x00) accordingly.
• What is the purpose of the reset pin (RST) on the PCA9600DP,118?
  The reset pin (RST) is an active-low input that resets the PCA9600DP,118 to its default state. It can be connected to a microcontroller's reset output or a manual reset button.