Hi all,

When I first started mucking around with PICs, I bought 6 x PIC12C509A/JW
and 6 x PIC12C671/JW - which are not cheap devices. I have since found out
that erasing these with a UV Eraser actually erases the OSCCAL data for the
internal clock.

Apparently, I should have read this data when the chips were new, recorded
the number for each chip, then re-written the calibration data each time I
write to that particular chip. This I did not do. :-(

Is there any method of retreiving this data or are the chips useless? I
assume that I can still use them with an extenal clock, but then that leaves
less I/O.

Regards,

Sean

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