PCF8563T/F4,112 Datasheet PDF - NXP

The PCF8563T/F4,112 is a CMOS1 Real-Time Clock (RTC) and calendar optimised for low power consumption. 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 400 kbit/s. The register address is incremented automatically after each written or read data byte.

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

● Century flag

● Low backup current

● 400KHz two wire I2C bus interface

● Programmable clock output for peripheral devices

● Alarm and timer functions

● Integrated oscillator capacitor

● Internal Power on Reset (POR)

● I2C bus slave address

● Open drain interrupt pin