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LPC2388 RTC with external  crystal

Question asked by Mohammad Faizan on Aug 27, 2018
Latest reply on Aug 29, 2018 by Mohammad Faizan


I was observing the behavior of RTC from several days, first I run the clock by power supply for 72 hours and the time variation is negligible. When I run the RTC on 3 volt battery (VBat), I am getting a difference of 3 sec, of every (24 hours), RTC time is leading by 3 seconds. I want to fix this error of 3 sec, is their a best way instead of using a calibration method. Please suggest

thanks & regards

Mohammad Faizan