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.

Features

• 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

Parameters

• Accuracy ±20ppm 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

Documents

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