DS1307 PDIP-8 Real Time Calendar and Clock

Overview

The DS1307 is a low-power, full binary-coded decimal (BCD) clock/calendar chip with an I2C interface, housed in a classic 8-pin PDIP package. It tracks seconds, minutes, hours, day, date, month, and year, and automatically compensates for leap years up to the year 2100. With its built-in trickle charger for a backup battery, the DS1307 ensures your timekeeping continues even when the main power is lost—making it the go-to RTC for countless Arduino and embedded projects.

Key Features

• Accurate Timekeeping: Provides seconds, minutes, hours, day, date, month, and year with leap year compensation.
• I2C Interface: Simple 2-wire serial interface (SCL and SDA) for easy integration.
• Low Power Consumption: Operates on a mere 200µA standby current, ideal for battery-powered applications.
• Wide Supply Range: Works with 4.5V to 5.5V, compatible with standard 5V logic.
• Built-in Trickle Charger: Supports a backup battery (e.g., CR2032) to maintain time when main power is off.
• Dual Outputs: Programmable square wave output (1Hz, 4kHz, 8kHz, 32kHz) and a 56-byte battery-backed RAM.
• Industrial Temperature Range: Reliable performance from -40°C to +85°C.

Technical Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Active Supply Current: 1.5mA (typical)
• Standby Current: 200µA (typical) with oscillator running
• Clock Accuracy: ±2ppm at 25°C (typical)
• Interface: I2C (100kHz)
• Package: 8-pin PDIP (DIP-8)
• Operating Temperature: -40°C to +85°C

Applications & Use Cases

• Arduino and Raspberry Pi Projects: Add precise timekeeping to data loggers, alarms, and automation systems.
• Data Logging: Timestamp sensor readings in weather stations, IoT devices, and environmental monitors.
• Clocks and Timers: Build digital clocks, countdown timers, and scheduling systems.
• Embedded Systems: Maintain accurate time in microcontrollers without a built-in RTC.
• Security Systems: Time-stamp events in access control and surveillance systems.

What's Included

• 1x DS1307 PDIP-8 Real Time Clock IC
• (Note: Battery, crystal, and other components are not included; you will need a 32.768kHz crystal and a backup battery for full functionality.)

Compatibility

• Works with any microcontroller that supports I2C, including Arduino (Uno, Mega, Nano), Raspberry Pi, ESP32, STM32, and more.
• Popular libraries: RTClib (Adafruit), DS1307RTC (Arduino), and many others.
• Requires an external 32.768kHz crystal and a 3V backup battery (e.g., CR2032) for continuous timekeeping.

MOKWN Recommendation

The DS1307 is a classic, reliable RTC that's perfect for makers and engineers in Egypt. It's easy to use, widely documented, and available at MOKWN with fast delivery. Pair it with a 32.768kHz crystal and a battery holder for a complete timekeeping solution. Whether you're a student learning embedded systems or a professional building IoT devices, the DS1307 is a must-have component for your electronics kit.

Order your DS1307 today and keep your projects on time!