Raspberry Pi RTC Expansion Module v1.1
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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.


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 ¡À2ppm from 0¡ãC to +40¡ãC
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¡ãC to +70¡ãC

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

Part List
Raspberry Pi RTC Expansion Module v1.1 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 ¡À2ppm from 0¡ãC to +40¡ãC
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¡ãC to +70¡ãC

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

Part List
Raspberry Pi RTC Expansion Module v1.1 1

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