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PCF8563 - Real-time clock/calendar

Download the PCF8563 datasheet PDF. This datasheet also covers the PCF variant, as both devices belong to the same real-time clock/calendar family and are provided as variant models within a single manufacturer datasheet.

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.

Key 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 A 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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (PCF-856.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

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Other Datasheets by NXP Semiconductors

Part Number Description
PCF8566 Universal LCD driver
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
PCF8563 Real-time clock/calendar Rev. 11 — 26 October 2015 Product data sheet 1. 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. 2. 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 A at VDD = 3.