Raspberry Pi RTC Expansion Module v1.1

SKU SS-114100001

The RTC module is specifically designed for Raspberry Pi. It communicated with Raspberry Pi through I2C bus. There is a Maxim DS1307 and CR1220 button cell on the board to keep the real time for a long time after the Raspberry Pi has it’s power off. In order to offering a convenient way to debug, there are five pin has been setup which are 5v, 3.3v, Rxd,Txd on board.


  • Use Maxim DS1307 chip

  • Extends CR1220 button cell backup

  • Can be operated by a shell

  • Set a serial port connector

  • Programmable square-wave output signal

  • Consumes Less than 500nA in Battery-Backup Mode

  • Automatic Power-Fail Detect and Switch Circuitry

  • Programmable Square-Wave Output Signal

Please note: a USB to TTL Serial cable is required!

Please also note: Instructions on how to set it up and use with the Raspberry Pi can be found here.