The PCF8563 RTC Board Provides the real-time clock / calendar function, which can be powered by an onboard battery and works independently even when the MCU is turned off.

The PCF8563 RTC Board Features I2C pinheader on one side and I2C connector on the other. Hence, it's more flexible to get the board to your system development. The board also supports I2C cascading, allowing the use of multi module connected to the I2C bus at the same time through the pin header and connector.