We have recently migrated from PIC16C622A to PIC16F628. Yesterday we =
programmed 500 parts (F628) using a Picstart Plus with FW 2.30 / MPLAB =
5.30, with the same setup we normally program C622 with (changed device =
in MPLAB ofcourse). All parts are codeprotected during programming.

Today we started testing the PC boards that came from production, but =
we're experiencing device failures, on about every 10th device. I tried =
reprogramming the devices which failed during test, and most works =
perfectly after a reprogram...

I then tried my development setup, with another Picstart Plus, =
programmed 25 devices without codeprotection, which where all programmed =
"successfully" according to Picstart Plus... then I did a "verify" on =
each device, and 4 out of the 25 failed! Seemed they just read out =
random data.

Anyone experienced the same?

Another thing; 16F628 is very slow to program in the Picstart Plus =
compared to 16C622A, probably because of the flashmemory instead of =
EPROM.. Will Promate be able to program them faster?=20


Regards
Jacob Blichfeldt
jacob@blichfeldt.dk
http://www.blichfeldt.dk

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