PCF8563 RTC Module

Real time clock (RTC) module based on the PCF8563.
400kHz I2C bus communications.
Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal.
Wide operating voltage 1.0V - 5.5V.
Alarm and timer functions.
I²C-bus slave address: read A3h and write A2h.
Open-drain interrupt pin.
Battery backup provision requires CR1220 lithium button cell.
Dimensions 43x13mm.