Thanks very much Ken.

I will try that when I next have spare time.

At the time, I don't think this errata was available.

P H Anderson

--- Ken Pergola <no_spam@LOCALNET.COM> wrote:
> Peter Anderson wrote:
>
> > ...I had an odd problem with the PIC18F1320...
>
> Hi Peter,
>
> I remember your post about this. That was a strange
> problem. Did you happen
> to see the errata document regarding the EEPROM and
> the LVD issue? See
> below:
>
>
> 2004 Microchip Technology Inc. DS80175B-page 1
>
> Module: Data EEPROM
> -------------------
> When writing to the data EEPROM, the contents of
> the data EEPROM memory may not be written as
> expected.
>
> Work around
> -----------
> Either of two work arounds can be used:
>
> 1. Before beginning any writes to the data
> EEPROM, enable the LVD (any voltage) and
> wait for the internal voltage reference to
> become stable. LVD interrupt requests may be
> ignored. Once the LVD voltage reference is
> stable, perform all EEPROM writes normally.
> When writes have been completed, the LVD
> may be disabled.
>
> 2. Configure the BOR as enabled (any voltage).
> Select a threshold below VDD to allow normal
> operation. If VDD is below the BOR threshold,
> the device will be held in BOR Reset.
>
>
>
> Best regards,
>
> Ken Pergola
>
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