PCF8523 Real Time Clock RTC Module (I2C Low Power Timekeeping)

The PCF8523 Real Time Clock RTC Module is a compact timekeeping module designed to maintain accurate date and time information in embedded systems. It features the PCF8523 RTC and communicates with microcontrollers through the I2C interface.

The module supports battery backup for continued timekeeping when the main power supply is disconnected. Its low power consumption makes it suitable for battery powered applications, data logging systems, alarms, scheduling, and embedded projects using Arduino, Raspberry Pi, and other development platforms.

Key Features -

• Real time clock with date and time tracking

• Low power consumption

• I2C digital communication interface

• Battery backup support

• Alarm and timer functions

• Clock calibration support

• Compact PCB module design

• Suitable for Arduino and Raspberry Pi projects

Specifications -

• RTC IC = PCF8523

• Operating Voltage = 2.3-5.5V DC

• Communication Interface = I2C

• Timekeeping Accuracy = ±3 ppm at 25 C typical

• Backup Battery Voltage = 1.3-3V

• Recommended Battery = CR2032

• Operating Temperature = -40 to 85 C

• Power Consumption = 0.3 µA typical in battery backup mode

• Module Size = Approx. 20 x 20mm

Applications -

• Arduino real time clock projects

• Raspberry Pi timekeeping

• Data logging systems

• Digital clocks

• Alarm and scheduling systems

• Event timestamping

• Embedded control systems

• Battery powered electronics