In processor, "MK70FN1M0VMJ12" we are facing a clock drift in RTC during both Power on and Power off condition. During Power off, a coin battery(CR2032) is used as power source. Also this drift is not constant. It is varying. Operating temperature is within range of 20 deg Celsius to 35 deg Celsius. Maximum drift of 12 seconds per day is observed. I had attached RTC and crystal section of our schematic. Please help us further in resolving this issue. Is compensation register usage solves this issue? Please help as ASAP.