Gravity I2C DS1307 RTC Module

This is a DS1307 I2C Real Time Clock from DFRobot. The module features a crystal oscillator to ensure a tolerance of approximately 1 second per 24 hours. The module utilizes the Gravity I2C interface and can be directly connected to a Gravity I/O Expansion Shield. With a 4KB EEPROM, information such as alarm timers and events can be stored.  

Info: The CR1220 button cell is not included and must be purchased separately. 

Recommended Accessories: 

• CR1220 Button Cell Lithium Battery 3V

Documentation: 

• DFRobot Wiki

Technical Details: 

• Manufacturer: DFRobot 
  
• Manufacturer SKU: DFR0151 
  
• Voltage: 5V 
  
• Interface: I2C 
  
• I2C Output Data: Hours, Minutes, Seconds, Week, Day, Month, Year 
  
• Leap Year compensation: Yes 
  
• Accurate calendar until: 2100 
  
• Dimensions: 22 x 27 x 7 mm 
  
• Weight: 13.4g

Package Includes: 

• 1x Gravity I2C DS1307 RTC Module 
  
• 1x Gravity 4pin I2C/UART Cable 30cm 
  
• 1x 5pin pin header