>it is not clear from the data sheet, but is the T0CKI pin on a PIC12C508A
>based on a Schmitt trigger?  It would be terribly useful to know, and also
>whether the T0CKI pin on other PIC family members has the same property.

Hi Andy,

Yes T0CKI is a Schmitt trigger throughout the pic line. Or perhaps it's a
Smith trigger, as I saw printed in a Revox A-700 service manual? In their
case, probably a Swiss trigger :-)

Every 12C508A you get will have different thresholds, which will vary
depending on how you use other pins on the chip and how much current the
chip is consuming. Thank you Microchip.

Cheerful regards,

Bob

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