Hi Jai,

Have you queried the device revision # of the PICs? Maybe this will help in
addition to the date codes if you need to contact Microchip about this.

Device ID registers:
        DEVID1 can be read at address 0x3FFFFE
        DEVID2 can be read at address 0x3FFFFF

The lower 5 bits of DEVID1 indicate the device revision of the PIC (0 to 31
decimal).
This device revision can be mapped to a specific errata document, but you
probably will need Microchip's guidance on this.

I have the silicon device revision # to errata doc translations for the
PIC18F452, but not for the PIC18F458 -- sorry.

Best regards,

Ken Pergola







>> ...with 12 chips in all, I found that the code, after it was split,
worked on
>> all chips marked:

>> PIC18F458-I/P
>> 0234HQB

>> BUT didn't work on all chips marked:

>> PIC18F458-I/P
>> 0303OUE

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