DS1307 Real Time Clock IC (RTC IC)

DS1307 Real Time Clock IC is a widely used, low-power, full binary-coded decimal (BCD) clock/calendar module designed to keep extremely accurate time in embedded electronics and microcontroller-based applications. With built-in features such as automatic leap-year compensation and support for battery backup, the DS1307 ensures reliable, uninterrupted timekeeping even during power failures. This makes it an ideal choice for industrial automation, consumer electronics, data logging devices, IoT systems, and academic projects that require precise tracking of time and date.

Engineered to maintain seconds, minutes, hours, day, date, month, and year, the DS1307 communicates through a standard I²C interface, allowing seamless integration with popular microcontrollers like Arduino, PIC, AVR, Raspberry Pi, and ARM-based platforms. Whether you’re building a real-time monitoring device, scheduling system, or time-stamped storage application, the DS1307 provides dependable operation at an affordable price point.

The DS1307 internal architecture is designed for stability and longevity. Its compatibility with an external 32.768 kHz crystal ensures minimal drift, while the onboard backup power support using a coin-cell battery allows the clock to function accurately for years without external power. Its compact 8-pin DIP/SOIC package makes it easy to embed in space-constrained circuit designs.

As a trusted industry-standard RTC IC, the DS1307 is preferred by engineers, makers, and students for its simplicity, excellent power efficiency, and flexible interfacing. Its programmable square-wave output, low-power standby mode, and robust timekeeping functionality make it suitable for a wide range of time-critical applications.

Key Features

• Accurate Real-Time Clock Functionality: Tracks seconds, minutes, hours (12/24-hour format), day, date, month, and year with automatic leap-year correction.

• I²C Serial Interface: Supports two-wire communication for easy integration with microcontrollers and embedded platforms.

• Battery Backup Support: Retains timekeeping for years using a standard CR2032 coin cell during system power loss.

• Low Power Consumption: Efficient design ensures minimal power usage during active and standby operations.

• Programmable Square-Wave Output: Provides selectable 1 Hz, 4 kHz, 8 kHz, or 32 kHz frequencies for timing applications.

• External 32.768 kHz Crystal Oscillator: Ensures stable and accurate clock operation.

• Non-Volatile Timekeeping: Maintains clock values without requiring continuous power.

• Compact and Easy to Use: Available in 8-pin DIP and SOIC packages suitable for breadboards and PCBs.

• Wide Operating Voltage Range: Works from 4.5V to 5.5V, suitable for various embedded circuits.

• Industry Standard & Highly Reliable: Widely supported with libraries, modules, sample codes, and development tools.

Specifications

• Operating Voltage: 4.5V to 5.5V

• Interface: I²C (Two-wire serial)

• Time Format: 12-hour with AM/PM or 24-hour format

• Calendar Format: Day, Date, Month, Year

• Temperature Stability: ±2 ppm with recommended crystal

• Backup Supply Voltage: 3V (typical CR2032 battery)

• Operating Temperature: 0°C to +70°C (commercial grade)

• Square Wave Output Options: 1 Hz, 4 kHz, 8 kHz, 32 kHz

• Crystal Frequency: 32.768 kHz

• Package: 8-pin DIP / SOIC

Applications

• Digital clocks and time-based controllers

• Data logging systems and timestamping devices

• IoT time-synchronization modules

• Attendance systems and security access control

• Embedded scheduling and automation

• Smart meters and home automation

• Robotics and industrial process control

• Consumer electronics and handheld gadgets

• Power outage-resilient devices requiring continuous clock operation

Package Includes:

1 x DS1307 Real Time Clock IC

FAQ

1. Where can we buy this DS1307 Real Time Clock IC?

This product is available online at https://aiiottech.in/product/ds1307-real-time-clock-ic-rtc-ic/ and also available at our store in Pudupakkam/Kelambakkam, Chennai-603103

2. When can I get this DS1307 Real Time Clock IC after placing the order?

RGRJ AIIoT TECHNOLOGIES will immediately ship and deliver the product within 1-3 working days.

3. How this DS1307 Real Time Clock IC is better than other similar ICs

DS1307 RTC IC offers reliable timekeeping, easy I²C interface, battery backup support, low power use, and wide microcontroller compatibility at low cost.

Video Link: Interface DS1307 RTC with Arduino Real Time Clock Tutorial