Real Time Clock Module

Real Time Clock Module

Product Code: 00216
Availability: Discontinued
Price: $18.95
This product has a minimum quantity of 1000000

This a custom designed module for the DS1307 Real Time Clock. The module comes fully assembled and pre-programmed with the current time (ok, so it’s * our 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 RTC is accessed via the I2C protocol. We’ve written a test-bed to program the modules. This test-bed code should give you some insight on how to interface the module to any microcontroller using our example software I2C and BCD routines.


  • Two wire I2C interface
  • Hour : Minutes : Seconds AM/PM
  • Day Month, Date - Year
  • Leap year compensation
  • Accurate calendar up to year 2100
  • Battery backup included
  • 1Hz output pin
  • 56 Bytes of Non-volatile memory available to user

Dimensions: 0.75x0.75" (20x20mm)


  • Schematic
  • Eagle Files
  • Datasheet (DS1307)
  • Wiring Example
  • GitHub


  • Example 16F88 code
  • Arduino Tutorial. Thanks John Vaughters!
  • Arduino Tutorial in Portuguese. Thanks Daniel Gonçalves!
  • Bildr Tutorial
Powered By OpenCart
RobotSimple © 2024