Description
Product Description
The DS1307 Real-Time Clock (RTC) Module with Battery is an electronic module designed to keep track of time and date in microcontroller-based projects. It communicates with compatible controllers through the I2C interface and can maintain timekeeping when the main power supply is disconnected, using a suitable backup battery.
The module can provide information such as seconds, minutes, hours, day, date, month, and year. It is suitable for projects that require accurate time and date tracking, including digital clocks, data loggers, attendance systems, automation, and scheduled control applications.
The DS1307 RTC module is commonly used with Arduino and other compatible microcontrollers, making it a practical solution for embedded systems and DIY electronics.
Key Features
- DS1307 real-time clock IC
- Tracks time and calendar date
- I2C communication interface
- Backup battery support for timekeeping during main power loss
- Compact module design
- Simple connection to compatible microcontrollers
- Suitable for digital clocks and data logging
- Useful for automation and scheduled operations
- Ideal for Arduino and DIY electronics projects
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Real-Time Clock Module |
| RTC Chip | DS1307 |
| Communication Interface | I2C |
| Timekeeping | Seconds, Minutes, Hours |
| Calendar | Day, Date, Month, Year |
| Backup Power | Battery supported |
| Battery Included | Included, as specified in product title |
| Main Supply | Typically 5V module supply; verify board version |
| I2C Signals | SDA and SCL |
| Application | Time and Date Tracking |
| Compatible Platforms | Arduino and compatible microcontrollers |
Typical Pin Connections
- VCC – Module power supply
- GND – Ground
- SDA – I2C data
- SCL – I2C clock
Some module versions include additional pins or onboard components. Check the labels on the supplied board before connecting it.
Applications
- Digital clocks and calendars
- Data logging with timestamps
- Attendance monitoring systems
- Scheduled relay control
- Home automation
- Electronic alarms
- Timed irrigation systems
- Robotics projects
- Arduino and embedded systems
- DIY electronics projects
Important Note
The DS1307 is designed for a 5V supply and uses I2C communication. When connecting it to 3.3V microcontrollers such as ESP32, check the module’s power arrangement and I2C pull-up voltage to avoid exposing the controller pins to 5V.
The backup battery type and holder can vary by module. Confirm the supplied battery specification and polarity before installation.
24C32 32K I2C EEPROM memory
The using CR2032 rechargeable lithium battery with charging circuit
Solve the problem DS1307 with backup battery can not read and write.
Fully charged, it can provide the DS1307 timing
Compact design, 27mm * 28mm * 8.4mm
Leads to the a DS1307 clock pin, to provide the clock signal for themicrocontroller.
Can be cascaded to other I2C devices
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