Byron A Jeff wrote:
>
> >
> > Byron A Jeff wrote:
> > >
> > > >
> > > > Hi Guys,
> > > >
> > > > Can someone tell me where the EEPROM data Location is in the Memory Map =
> > > > of a 16f877 ?
> > > >
> >
> > To program the data EEPROM, the EEPROM data address defaults to 00h on
> > chip reset as well as the ROM address.
> >
> > There is no need to set any address unles you want to move to a
> > different one by using the increment address command.
>
> This is the confusion I want to clear up. I'm presuming that there are two
> different counters for the program and data memories. However there's only
> one increment command.
>
> So I'm presuming that the Increment Address will increment whatever counter
> was applied during the last read/load/program command right?

I honestly have no idea, but I imagine the PC is used for both. You
would get a wrap around if the data EEPROM memory limits are exceeded,
the same for ROM.

Only when you jump to the config words will things change.

I only program/read ROM or EEPROM, not swap randomly between them,
although if you knew the data in each menory block at a given address,
just do a read ROM and a read EEPROM and verify the data. Inc the
address, do another read ROM and EEPROM and see if the data matches
again for both. I imagine they would.


--
Best regards

Tony

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http://www.picnpoke.com
mailto:sales@picnpoke.com

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