I am sampling a HCS301 chip. It probably has a simple RC oscillator - completely internal.
When sampling I can find a very distinctive max value (spike) which I have chosen as the start point.
I also find a very distinctive min value (also a spike) which I have chosen as the end point.
The length of the period between varies and I assume, but do not know, that it is partly related to a varying clock frequency.
The length of the interesting period in 16 traces were now:
12408, 12477, 12415, 12543, 12408, 12482, 12409, 12612,
12405, 12475, 12415, 12545, 12408, 12477, 12408, 12735
Only a small part of the differences seem to be related to a varying clock frequency. Anyway, is there a standard method for correcting the data?