PCF85132U/2DA/1,02 datasheet by NXP Semiconductors

PCF85132U/2DA/1,02 Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for PCF85132U/2DA/1,02?
  The recommended operating voltage range is 2.5V to 5.5V, with a typical voltage of 3.3V.
• How do I ensure reliable communication with the PCF85132U/2DA/1,02?
  To ensure reliable communication, use a pull-up resistor on the SCL line, and ensure the clock frequency is within the specified range (100 kHz to 400 kHz).
• What is the maximum clock frequency for the PCF85132U/2DA/1,02?
  The maximum clock frequency is 400 kHz, but it's recommended to operate at 100 kHz to 200 kHz for reliable communication.
• How do I handle the power-on reset (POR) and brown-out detection (BOD) features?
  The POR and BOD features are enabled by default. To disable them, tie the POR/BOD pin to VCC. For proper operation, ensure the power supply is stable and within the recommended voltage range.
• What is the purpose of the internal oscillator, and how do I use it?
  The internal oscillator is used for the watchdog timer and real-time clock. To use it, connect the XIN pin to VCC, and the XOUT pin to GND. The internal oscillator frequency is approximately 32.768 kHz.