PCF8563BS/4,118 Datasheet PDF - NXP

The PCF8563BS/4,118 is a CMOS Real-time Clock (RTC) and Calendar optimized for low power consumption. It provides year, month, day, weekday, hours, minutes and seconds based on a 32.768kHz quartz crystal. A programmable clock output, interrupt output and voltage-low detector are also provided. All addresses and data are transferred serially via a two-line bidirectional I²C-bus. Maximum bus speed is 400kbps. The register address is incremented automatically after each written or read data byte.

● Alarm and timer functions

● Integrated oscillator capacitor

● Internal power-ON Reset (POR)

● I²C-bus slave address: read A3h and write A2h

● Open-drain interrupt pin