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The DS1307 AT24C32 Real Time Clock Module for AVR ARM PIC Features Two wire I2C interface. Hour: Minutes: Seconds AM/PM. Day Month, Date - Year. Leap year compensation. Accurate calendar up to year 2100. DS1307 based RTC. 1Hz output pin. 56 Bytes of Non-volatile memory available to user. The DS1307 ..

What are Real-Time Clocks?Real-time clocks (RTC), as the name recommends are clock modules. The DS1307 real-time clock (RTC) IC is an 8 pin device using an I2C interface. The DS1307 is a low-power clock/calendar with 56 bytes of battery backup SRAM. The clock/calendar provides seconds, minutes, hour..