Raspberry Pi RTC Expansion Module v1.1

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.FeaturesUse Maxim DS1307 chipExtends CR1220 button cell backupCan be operated by a shellSet a serial port connectorProgrammable square-wave output signalConsumes Less than 500nA in Battery-Backup ModeAutomatic Power-Fail Detect and Switch CircuitryProgrammable Square-Wave Output SignalParametersAccuracy ¡À2ppm from 0¡ãC to +40¡ãCWork voltage 5VBattery Backup Input for Continuous Time keepingReal-Time Clock Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year ? Compensation Valid Up to 2100Work temperature 0¡ãC to +70¡ãCDocumentsIt will be appreciated if you can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions to our forum.Technical detailsDimensions 0mm x0mm x0mmWeight G.W 10gBattery ExcludePart ListRaspberry Pi RTC Expansion Module v1.1 1