PCF8563TS/5,118

实时时钟/日历

Overview

The PCF8563 is a CMOS 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.

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## Features

* 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 μA 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

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

* Open-drain interrupt pin

## Target Applications

* Mobile telephones

* Portable instruments

* Electronic metering

* Battery powered products

## Features