Bump.


On 8/10/2014 5:12 PM, Neil wrote:
> Hi all,
>
> Getting back into PIC dev recently, and I've run into a
> somewhat-familiar EEPROM issue.  I'm preloading a PIC18F46K22 with 400+
> bytes of data and it works fine initially, but after some time (with no
> EEPROM writes from the code) the data is getting corrupted.  Swapped the
> chip and same issue.  Without any writes, it seems it's not the old
> wear-leveling issue with writing to some cells possibly degrading or
> corrupting other cells.  The only thing that happened from working to
> non-working is that power was cycled several times.
>
> I do have brown-out reset enabled (at 2.85V), so I don't think it's that.
>
> I know there are some concerns about data EEPROM in these devices, so
> the bottom-line question is if this could be made to run reliably
> nowadays, or should I be seeking alternate options?  In the past I've
> moved the data to an external serial-EE, but in the essence of time
> here, I'd like to find a solution with the existing hardware. Is writing
> to flash program memory more reliable?  I could also run a sort of
> RAID-type duplicated-table system, but that still does not make me
> comfortable that all is hunky-dory.
>
> What else could I be missing here?
>
> Cheers,
> -Neil.
>

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