DS1307 RTC Real Time Clock Module (I2C RTC Module with Battery Backup)

The DS1307 RTC Real Time Clock Module is a compact timekeeping module designed to provide accurate real-time clock and calendar functions for microcontroller-based projects. Based on the DS1307 RTC IC, it maintains time, date, day, month, and year information even when the main power is removed by using a backup coin cell battery. The module communicates through the I2C interface, making it easy to connect to Arduino, ESP32, ESP8266, STM32, Raspberry Pi, and other embedded development platforms. It is ideal for data logging, clocks, automation systems, IoT devices, and time-based control applications.

Key Features -

• Based on DS1307 real-time clock IC

• Maintains time and calendar information

• Battery backup for continuous timekeeping

• I2C serial communication interface

• Automatic leap year compensation

• Low power operation

• Onboard crystal oscillator

• Compact PCB module

• Easy interface with microcontrollers

• Ideal for clock and data logging applications

Specifications -

• Product type - Real Time Clock Module

• RTC IC - DS1307

• Communication interface - I2C

• Operating voltage - 5V DC

• Backup battery - 3V CR2032 Coin Cell (Module Dependent)

• Time format - 12-Hour or 24-Hour

• Calendar - Date, Day, Month and Year

• Oscillator - 32.768kHz Crystal

• Battery backup - Supported

• Mounting type - PCB Module

Applications -

• Real-time clock projects

• Data logging systems

• Home automation

• IoT devices

• Alarm clocks

• Embedded control systems

• Industrial automation

• Educational electronics