PCF8563BS/4,118 datasheet by NXP Semiconductors

PCF8563BS/4,118 Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the PCF8563 can handle?
  The PCF8563 can handle a maximum clock frequency of 32.768 kHz, which is the typical frequency for a quartz crystal oscillator.
• How does the PCF8563 handle battery switchover during power failure?
  The PCF8563 has a built-in battery switchover circuit that automatically switches to the backup battery during power failure, ensuring continuous operation of the RTC.
• What is the accuracy of the PCF8563's internal oscillator?
  The PCF8563's internal oscillator has an accuracy of ±10 ppm (parts per million) over the operating temperature range of -40°C to 85°C.
• Can the PCF8563 be used in a battery-powered device?
  Yes, the PCF8563 is designed for use in battery-powered devices and has a low current consumption of 0.5 μA (typical) in battery-backed mode.
• How does the PCF8563 handle leap year corrections?
  The PCF8563 automatically corrects for leap years, taking into account the extra day in February for years that are divisible by 4.