Specifications
DS1307 Real-Time Clock (RTC) – Provides accurate time and calendar information including seconds, minutes, hours, day, date, month, and year with automatic leap-year compensation.
I2C Communication Interface – Standard two-wire (SDA/SCL) interface for easy integration with Arduino, ESP8266, ESP32, STM32, Raspberry Pi, AVR, PIC, and other microcontrollers.
Battery Backup Support – Onboard CR2032 coin-cell holder maintains timekeeping during main power loss.
Onboard AT24C32 EEPROM – Integrated 32Kb (4KB) I2C EEPROM for storing user data and configuration settings.
32.768 kHz Crystal Oscillator – High-stability crystal ensures reliable RTC operation and accurate timekeeping.
Square Wave Output (SQW) – Supports programmable square-wave output for timing and clock generation applications.
5V Logic Compatible – Designed for reliable operation with standard 5V microcontroller systems.
Compact Through-Hole Module – Breadboard-friendly design with clearly labeled header pins for quick prototyping and permanent installations.
Low Power Operation – Automatically switches to battery backup mode to preserve time during power interruptions.
Wide Range of Applications – Suitable for data loggers, automation systems, digital clocks, IoT devices, scheduling systems, access control, and embedded electronics.