Another thing to look at:
What is the Vcc for the EERPOMs in the target board versus the
Vcc used by the programmer during verification?

I've seen instances where EERPOMs, due to process variances, had a "hole"
within the speced Vcc range within which they would not work, with a=20
Vcc above or below that "hole"
range the EERPOMs worked fine.
So it could be that your programmer's verification Vcc is outside=20
this hole, whereas
your board's Vcc is inside it.

Can you vary the verification voltage on your programmer? If yes set=20
it to the exact same voltage
of your target board's measured Vcc voltage and try to verify again=20
in the programmer.
Do the EEPROMs still verify ok?


regards
Volker

--=20
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