PCF8563 I2C Real Time Clock RTC Module

PCF8563 I2C Real Time Clock RTC Module 

The PCF8563 RTC Module is a low-power real-time clock based on the NXP PCF8563 IC.
It keeps accurate time and date even when the main system is powered off, thanks to its onboard backup battery (CR1220/CR2032 depending on module version).

The module communicates via the I2C interface, making it compatible with Arduino, ESP8266/ESP32, Raspberry Pi, STM32, AVR, and other microcontrollers.
It supports seconds, minutes, hours, day, date, month, and year, along with optional alarm and timer functions.

It is widely used in low-power and battery-operated devices due to its ultra-low consumption.

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Features :

• High-precision timekeeping with low power consumption
• I2C interface for easy connection with Arduino, Raspberry Pi, ESP32, and other controllers
• Supports calendar functions including day, month, year, and weekdays
• Integrated alarm and timer functions
• Backup battery support for maintaining time during power failure
• Compact and easy to integrate into various electronic projects

Specifications :

• IC: PCF8563
• Communication Interface: I2C (Address: 0x51)
• Operating Voltage: 1.8V to 5.5V
• Timekeeping Accuracy: ±5 ppm
• Backup Battery: CR2032 Lithium Battery supported (Not Included)

Applications

• Digital clocks and timers
• Data loggers
• Attendance and time stamp systems
• Battery-powered devices
• IoT devices requiring persistent clock
• GPS trackers (time reference)
• Alarms and scheduling systems
• Power monitoring and metering devices
• Embedded systems needing reliable timekeeping
• Smart home automation timing functions