Pi RTC (DS1307)


The Pi RTC is based on the clock chip DS1307, it can provide a real-time clock(RTC) for raspberry pi via the I2C interface. Real-time clock of this module counts seconds,minutes, hours, date of the month,month, day of the week, and year with leap-year compensation valid up to 2100. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. If you want to keep this module timing when the Raspberry Pi is powered off, you need to put a 3-Volt CR1225 lithium cell in the battery-holder.


  • Support Raspberry Pi 2/ 3 B/B+ Zero/4
  • Suport seconds,minuutes,hours,day of week,month, year
  • Support 24-hour or 12-hour format with AM/PM indicator
  • 56-byte, battery-backed, nonvolatile (NV) RAM for data storage
  • Programmable squarewave output signal
  • Automatic power-fail detect and switch circuitry

Typical applications

  • Applications need Real Time on Raspberry.

Pin Out

Technical details

Dimensions30mm x23mm x15mm
WeightG.W 13.2g

Part List

Pi RTC(DS1307)1
2pin header1



Source: Pi RTC (DS1307)

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