• Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal 

•  Century flag 

•  Clock operating voltage: 1.0 V to 5.5 V at room temperature 

•  Low backup current; typical 0.25 at VDD = 3.0 V and Tamb = 25 ° c 

•  400 kHz two-wire I2C-bus interface (at VDD = 1.8 V to 5.5 V)

• Programmable clock output for peripheral devices (32.768 kHz, 1.024 kHz, 32 Hz, and 1 Hz) 

•  Alarm and timer functions 

•  Integrated oscillator capacitor 

•  Internal Power-On Reset (POR) 

•  I 2C-bus slave address: read A3h and write A2h 

•  Open-drain interrupt pin 

Applications:-

● Mobile telephones 

●  Portable instruments 

●  Electronic metering 

● Battery powered products 

Related Document:- 

 PCF8563 IC SMD Data Sheet