Sunday 9 September 2018

pic - How do you Calibrate 32.768kHz crystal for PIC24 RTCC


I'm trying to figure out the best method for PIC24 RTCC crystal calibration. Their application note states two methods: using a lookup table and using a reference system clock.


According to them the reference system clock method is best, but they recommend a system oscillator that is a multiple of the RTCC crystal oscillator, like 16.777MHz.



Has anyone actually tried this RTCC crystal calibraiton process for PIC24? I would appreciate some practical guidelines. I'm using PIC24FJ128GA006.




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