1PCS I2C RTC DS1307 RTC Module Real Time Clock Module For Raspber High Precision
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 its power down. Set a serial port, TTL convenient way online debugging. Features: Use Maxim DS1307 chip Extends CR1220 button cell backup(NOTE:the battery not included) 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 Port： Raspberry Pi B module 2X13 connection port Raspberry Pi A+/B+/2 module 2X13 connection port 2*5pin 2.54mm connector Product Parameters： Accuracy ±2ppm from 0°C.
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