Raspberry Pi RTC Expansion Module v1.1

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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 borad.


  • 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


  • Accuracy ±2ppm from 0°C to +40°C

  • Work voltage 5V

  • Battery Backup Input for Continuous Time keeping

  • Real-Time Clock Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year • Compensation Valid Up to 2100

  • Work temperature 0°C to +70°C


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Technical details

Dimensions 0mm x0mm x0mm
Weight G.W 10g
Battery Exclude

Part List

Raspberry Pi RTC Expansion Module v1.1 1


HSCODE 8543909000

Raspberry Pi RTC Expansion Module v1.1

This is wiki of Raspberry Pi RTC Expansion Module v1.1.

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