Tiny RTC Real Time Clock DS1307 I2C IIC Module for Arduino

The Tiny RTC Real Time Clock DS1307 I2C IIC Module is a compact, battery-backed timekeeping module designed for precise date and time tracking in Arduino and microcontroller projects. It uses the DS1307 IC to provide information including seconds, minutes, hours, day, date, month, and year with leap-year compensation. This module communicates over the I2C bus and includes onboard EEPROM (AT24C32) for additional data storage and a CR1220 battery holder for timekeeping when power is lost.

Key Features of Tiny RTC Real Time Clock DS1307 I2C IIC Module:

• Accurate Timekeeping: Maintains real-time clock and calendar with second, minute, hour, day, date, month, and year information.
• I2C Interface: Communicates over I2C protocol using only two lines (SCL and SDA).
• Battery Backup: Retains time data with CR1220 coin cell even when main power is off.
• EEPROM Storage: Includes AT24C32 32Kbit EEPROM for user data storage.
• Compact Design: Small module size ideal for embedded applications.

Technical Specifications of Tiny RTC Real Time Clock DS1307 I2C IIC Module:

• RTC IC: DS1307
• EEPROM: AT24C32 (32Kbit)
• Interface: I2C (SCL, SDA)
• Voltage Supply: 5V DC
• Battery: CR1220 (3V, not included)
• Timekeeping Accuracy: ±20ppm (typical) from 0°C to +70°C

Mechanical Specifications of Tiny RTC Real Time Clock DS1307 I2C IIC Module:

• Board Dimensions: Approx. 28mm x 25mm
• Mounting Holes: 2 holes for screw mounting
• Header Pins: Straight male headers (included/soldered)
• Battery Holder: CR1220 metal clip on rear side

Dimensions:

• Length: 28mm
• Width: 25mm
• Height: 8mm (without battery)

Mounting Options:

• Header Pins: Direct solder to Arduino/PCB via included pin headers.
• Screw Mount: Use holes for fixed mounting on base boards or enclosures.

Schematic Diagram, Connection, Wiring and Pinout of Tiny RTC Module:

• VCC: Connect to 5V
• GND: Ground
• SDA: I2C Data line (connect to Arduino A4 on UNO)
• SCL: I2C Clock line (connect to Arduino A5 on UNO)
• Pinout: VCC, GND, SCL, SDA (usually from left to right)

Datasheet of Tiny RTC DS1307 Module:

• Download DS1307 Datasheet (PDF)
• Download AT24C32 EEPROM Datasheet (PDF)

Applications of Tiny RTC Real Time Clock DS1307 I2C IIC Module:

• Data Logging: Timestamp sensor data or system events.
• Alarm Systems: Trigger tasks at specific real-time intervals.
• IoT Applications: Maintain system time in microcontroller-based devices.
• Home Automation: Schedule operations like lighting or HVAC systems.
• Electronic Clocks: Build standalone digital clock devices.

Equivalent of Tiny RTC DS1307 Module:

• DS3231: High-accuracy RTC with temperature compensation and better precision
• PCF8563: Low-power RTC module used in battery-critical applications
• RV3028-C7: Ultra-low-power RTC with I2C interface and smaller size

Package Includes:

• 1 x Tiny RTC Real Time Clock DS1307 I2C IIC Module
• 1 x Pin Header (may or may not be pre-soldered)