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The PCF8563 is a CMOS real-time clock/calendar optimized 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 built-in word address register is incremented automatically after each written or read data byte.
Provides year, month, day, weekday, hours, minutes and seconds based on 32.768 kHz quartz crystal Century flag Clock operating voltage: 1.8 V to 5.5 V Low backup current; typical 0.25 mA 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, 1024 Hz, 32 Hz and1 Hz) Alarm and timer functions Integrated oscillator capacitor Internal power-on reset I2C-bus slave address: read A3h and write A2h Open-drain interrupt pin ElectroStatic Discharge (ESD) protection exceeds 2000 V Human Body Model (HBM) per JESD22-A114, 200 V Machine Model (MM) per JESD22-A115 and 2000 V Charged Device Model (CDM) per JESD22-C101 Latch-up testing is done to JEDEC standard JESD78 which exceeds 100 mA