Is it possible to place the processor in a stable tate such that it's
not outputing any high signals, then raise it's Vdd t0 >=3D 2.7V. bulk
erase it and then lower voltage, all without other drama? (Probably
not, but maybe worth the asking).

- If the PIC is internally configures to expct 1.8V there 'may be issues'

 If an I/O "blips" to > 1.8V during erase summat else may suffer.

Removable adaptor board?


  Russell



On 11 August 2011 07:33, Robert Berger
<gmane@reliableembeddedsystems.com> wrote:
> Hi,
>
> Thanks for the replies and let me elaborate a bit more on my problem.
>
> What I would like to have is a processor, which can operate at 1.8V and
> where I can use real-ice to edit/compile/download/debug, edit/compile,...
>
> Although there seem to be methods for the PIC18LF45K22 to erase flash at
> 1.8V ( ww1.microchip.com/downloads/en/DeviceDoc/41398B.pdf ) it looks
> like real-ice always uses bulk erase, which requires >2.7 V.
>
> It's fine for me to reset the configuration with > 2.7V, but I would
> like to develop my code with 1.8V.
>
> I would not mind switching the processor, even to something different
> from Microchip, but ideally I'm after a development method where I can
> operate the chip at 1.8V and can use edit/compile/download/debug without
> applying a higher voltage in between with real-ice.
>
> How are you usually developing when you have such constraints?
>
> Develop with a higher voltage and voltage translators to 1.8V and when
> everything works go reduce the voltage to 1.8V so the interface to the
> other board can be made without voltage translators?
>
> Regards,
>
> Robert
>
>
>
>
>
>
>
> ..."Real Time, adj.: Here and now, as opposed to fake time, which only
> occurs there and then."
>
> My public pgp key is available at:
> http://pgp.mit.edu:11371/pks/lookup?op=3Dget&search=3D0x90320BF1
>
>
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>
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