PCF8563T/F4,112

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1. Description

The PCF8563T/F4,112 is a CMOS1 Real-Time Clock (RTC) and 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 register address is incremented automatically after each written or read data byte.

2. Features

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

    2. Century flag

    3. Clock operating voltage: 1.0 V to 5.5 V at room temperature

    4. Low backup current; typical 0.25 μA at VDD = 3.0 V and Tamb = 25 °C

    5. 400 kHz two-wire I²C-bus interface (at VDD = 1.8 V to 5.5 V)

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

    7. Alarm and timer functions

    8. Integrated oscillator capacitor

    9. Internal Power-On Reset (POR)

  10. I²C-bus slave address: read A3h and write A2h

  11. Open-drain interrupt pin

3. Applications

    1. Mobile telephones

    2. Portable instruments

    3. Electronic metering

    4. Battery powered products

4. Pin configuration

5. Pin description

6. Package overview