DS1307 RTC Real Time Clock Module

DS1307 RTC Real Time Clock Module with real time clock DS1307 and battery back-up. It allows you to read time in the form of hours, minutes and seconds and dates: month, day, year. It has 32 kb EEPROM memory. The communication interface is the I2C bus (lines SDA and SCL) , the data refresh rate is 1 Hz (1 second).

Connection

The 5 V supply voltage is connected tobthe pin marked with the same symbol. The I2C bus should be connected to the SCL terminals - clock line and  SDA  - data line. Pin  SQ  is the output of a rectangular signal with the selected frequency . GND  is the ground of the system.

Specification

• Power supply: 5 V
• Power consumption: less than 500 nA
• Communication interface  : I2C / TWI (SDA, SCL)
• Refresh rate: 1 Hz (1 second)
• Available data:
• Time: hour (AM, PM), minute, second
• Date: month, day, year
• The ability to support data using battery (not included)
• Exact calendar until 2100
• EEPROM memory: 32 kb
• Board dimensions: 28 x 28 mm

Useful links

• Library for Arduino