Hi
expert I want your help regarding my rtc project,actually i hav worked on DS1307 rtc and able to set time . But My problem is that its nt working properly as time slow downs while comparing wd real time .
Sometimes its working fine bt after some days or week it again slow downs..so can you help me as i can solv ma problem
The time slows down because the xtal might not be oscillating at the intended 32.768KHz. Check the effective load capacitance which appears across the crystal and see whether it matches with the crystal load capacitance.
If you RTC has a clkout option, measure the oscillating frequency through it.