Fermion SD3031 Precision RTC Module for Arduino

The Fermion SD3031 is a precision RTC module for Arduino (Breakout) with an integrated quartz oscillator and temperature compensator for the highest accuracy and stability. Operated by button cell batteries, it allows for accurate timekeeping even when the main power source is interrupted. It stores seconds, minutes, hours, days of the week, months and years and has built-in 70-byte SRAM memory for power-saving data storage. The accuracy is ±3.8ppm at 25°C and the operating current consumption is only 1.8µA.  

Please note that no batteries are included in the delivery and that the module operates with the CR1220 button cell. 

Recommended Accessories: 

• CR1220 Button Cells Lithium Battery 3V

 Features: 

• Low power consumption, operating current of only 1.8µA when operated with a button cell battery 
• High accuracy, ±3.8ppm at 25°C 
  
• Integrated temperature compensator, low temperature drift 
  
• Allows reading of the button cell voltage 
  
• Built-in 70Byte SRAM 

Documentation: 

• DFRobot Wiki

Technical Details: 

• Manufacturer: DFRobot 
• Manufacturer SKU: DFR0998 
• Supply Voltage: 3.3V 
• I2C Address: 0x32 
• SRAM: 70 Bytes (0x2C-0x71) 
• Time Accuracy: ±3.8ppm at 25°C 
• Time Range: 2000 - 2099 
• Operating Temperature: -10℃ to +70℃ 
• Dimensions: 22.5 x 21 x 6mm 
• Weight: 8g 

Package Includes: 

• 1x Fermion SD3031 Precision RTC Module for Arduino   
• 1x 7-Pin Male Header