PCF8563 RTC Breakout Board with Battery

SKU: VM479

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The PCF8563 RTC Board provides the real-time clock/calendar function, which can be driven by a battery on board and works independently even when the MCU is turned off. The PCF8563 RTC Board features an I2C pin-header on one side and an I2C connector on the opposite side. Hence, it’s more flexible to connect the board to your development system. The board also supports I2C cascading, allowing the use of a multi-module connected to the I2C bus at the same time by connecting the pin header and connector.

 Technical Specification:

  • Model: PCF8563
  • IC Chip: PCF8563
  • I2C Pin Header
  • Battery: 3.3V (Button)
  • Size: 55m*16mm*5mm (L*W*H)


  • Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal
  • Battery backup input pin and switch-over circuit
  • Freely programmable timer and alarm with interrupt capability
  • Open-drain interrupt or clock output pins
  • Programmable offset register for frequency adjustment


  • Mobile telephones
  • Portable instruments
  • Electronic metering
  • Battery powered products

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