This is the DS1307 Real Time Clock developed by Graylogix. The module comes fully assembled and pre-programmed with the current time. The DS1307 is accessed via the I2C protocol. it also has inbuilt 24C32 EEPROM.
. Two wire I2C interface
. Hour : Minutes : Seconds AM/PM
. Day Month, Date – Year
. Size: 28x25x10mm
. Leap year compensation
. Accurate calendar up to year 2100
. 1Hz output pin
. 32 Bytes of Non-volatile memory available to user.
DS1307 EEPROM RTC BATTERY MODULE 1Pc.