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.