Joe Jansen wrote: > Incidentally, and maybe this is the answer, since the 12c508a uses 6 > bits for OSCCAL, and the min and max is 9.6% either way (roughly) for > a total variance of 19.2%, taking .192 / 63 (bits resolution) gives > me an accuracy of 0.3% (again, roughly). Does that seem reasonable? No, that's the adjustment precision, NOT the accuracy. I sortof remember these chips having around 5% overall oscillator accuracy with the factory OSCCAL value. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com _______________________________________________ http://www.piclist.com View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist