General description

The PCF8563 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.

Features and benefits

■ 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

Applications

■ Mobile telephones

■ Portable instruments

■ Electronic metering

■ Battery powered products

PCF8563屬于集成電路（IC） > 實(shí)時(shí)時(shí)鐘。恩智浦半導(dǎo)體公司制造生產(chǎn)的PCF8563實(shí)時(shí)時(shí)鐘實(shí)時(shí)時(shí)鐘 (RTC) 為幾乎所有需要保持精確時(shí)間的電子設(shè)備提供時(shí)間和/或日期信息。時(shí)鐘類(lèi)型有二進(jìn)制計(jì)數(shù)器、時(shí)鐘/日歷/監(jiān)控器、歷時(shí)計(jì)時(shí)器、幻時(shí)鐘芯片、便攜式系統(tǒng)控制器、溫度記錄器、時(shí)間事件記錄器和計(jì)時(shí)器時(shí)鐘外設(shè)。其包含 2 B 至 2 MB 不等的存儲(chǔ)器，接口選項(xiàng)有 I2C、并行、串行、SPI、1 線(xiàn)式、2 線(xiàn)式、3 線(xiàn)式和 4 線(xiàn)式。