Real Time Clock Module DS1307

  • Accurate Timekeeping: Tracks seconds, minutes, hours, day, date, month, and year with leap year compensation up to 2100.
  • Battery Backup: Maintains timekeeping during power outages with a battery backup function.
  • I2C Interface: Easy communication with microcontrollers via a simple I2C interface.
  • Low Power Consumption: Minimal current usage, ideal for battery-powered applications.
  • Non-volatile Memory: 56 bytes of NV SRAM for retaining data even without power.
  • Programmable Square Wave Output: Provides a programmable output for timing applications.
  • Compact Design: Small module form factor for easy integration into various projects.


The Real Time Clock (RTC) Module DS1307 is a widely used timekeeping device that provides accurate time and date information in various electronic projects. This module is based on the DS1307 IC, a low-power, full binary-coded decimal (BCD) clock/calendar with 56 bytes of NV SRAM. It is designed for simplicity and reliability, making it a staple component for time-sensitive applications.

Key Features:

  1. Accurate Timekeeping:
    • Provides real-time clock/calendar functionality, keeping track of seconds, minutes, hours, day, date, month, and year with leap year compensation valid up to 2100.
  2. Battery Backup:
    • Includes a battery backup function to maintain timekeeping even when the main power supply is interrupted. This ensures continuous operation and accurate timekeeping.
  3. I2C Interface:
    • Communicates with the host microcontroller using a simple I2C interface, allowing for easy integration with various microcontrollers and development platforms like Arduino, Raspberry Pi, and others.
  4. Low Power Consumption:
    • Designed for low power operation, the DS1307 consumes minimal current, which is ideal for battery-powered applications.
  5. Non-volatile Memory:
    • Includes 56 bytes of non-volatile SRAM for data storage, retaining data even when power is lost.
  6. Programmable Square Wave Output:
    • Features a programmable square wave output that can be used for various timing applications and interrupts.
  7. Compact Design:
    • Available in a compact module form, making it easy to incorporate into any project without taking up much space.


  1. Timekeeping in Embedded Systems:
    • Provides accurate time and date information for embedded systems, essential for applications requiring precise time stamps.
  2. Data Logging:
    • Used in data logging applications to timestamp data entries, ensuring accurate tracking and record-keeping.
  3. Alarm Systems:
    • Can be used in alarm systems to trigger events at specific times, such as turning on lights or activating devices.
  4. Automation Systems:
    • Integral to automation systems that require scheduling and timed operations, such as home automation and industrial control systems.
  5. Event Recording:
    • Ideal for applications that need to record events with exact time stamps, such as security systems and attendance systems.

Technical Specifications:

  • Clock Accuracy: ±2 ppm from 0°C to +40°C
  • Interface: I2C (2-wire)
  • Operating Voltage: 4.5V to 5.5V
  • Backup Battery: Supports standard 3V lithium coin cell battery (e.g., CR2032)
  • Current Consumption:
    • Active: 1.5mA (typical)
    • Battery Backup: 500nA (typical)
  • Memory: 56 bytes of NV SRAM
  • Square Wave Output: Programmable square-wave output signal

Why Choose the DS1307 RTC Module?

The DS1307 RTC Module is a versatile and reliable solution for adding real-time clock functionality to your electronic projects. Its ease of use, low power consumption, and robust features make it an ideal choice for hobbyists, educators, and professionals alike. Whether you need precise timekeeping for data logging, automation, or event recording, the DS1307 offers a simple yet effective way to keep your projects on time.

Enhance your projects with the DS1307 RTC Module and ensure accurate and reliable timekeeping in all your electronic applications.

Based on 0 reviews

0.0 overall

Be the first to review “Real Time Clock Module DS1307”

There are no reviews yet.