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Real Time Clock (RTC) Module

Real Time Clock (RTC) Module

Our Price: $4.40

Stock Status:In Stock

Product Code: DFR0151

The DS1307 Real Time Clock module comes fully assembled and pre-programmed with the current time (MST).  The included Lithium coin cell battery (CR1225 41mAh) will run the module for a minimum of 9 years (17 years typical) without external 5V power.  The DS1307 is accessed via the I2C protocol.
Besides the DS1307 real time clock, the module also integrate the I2C EEPROM chip (24C32) and the DS18B20 sensor interface.  The I2C EEPROM makes it possible to save the sensor data easily without spending too much of the microcontroller's resources, and the DS18B20 interface with the pull-up resistor on-board makes it easy to add a temperature sensor to this module.


  • Working voltage: 5v
  • Two wire I2C interface
  • Hour : Minutes : Seconds AM/PM
  • Day Month, Date - Year
  • Leap year compensation
  • Accurate calendar up to year 2100
  • Consumes less than 500nA
  • Battery included
  • 1Hz output pin
  • 56 Bytes of Non-volatile memory available to user
  • 4KB of serial EEPROM
  • DS18B20 temperature sensor interface with the pull-up resistor
  • Dimensions: 28mm x 25mm x 8mm



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