Hi everyone, this is just a curiosity question that came to me. Many of the
newer PICs have this Precision Internal Oscillator and it does seem to be
pretty good. I know that with a 12F629, I had set the OSCCAL register in
order for a software UART to work correctly. But, I'm now using a 16F689 and
with this Precision Internal Oscillator the built in EUSART works just fine
without any calibration.

So my question is this: how has the technology changed? Is a mini ceramic
resonator present in these new chips? :) Or is it just a better designed RC
oscillator?

Thanks for any insight! Matthew
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