Marcel Duchamp wrote:
> Looking at the datasheet (39663A.pdf) for the PIC18F87J10 Family, there
> is a table:
>
> Characteristic              PIC18F87J10 Family      PIC18F8722 Family
> Program Memory Retention    10 years (minimum)      40 years (minimum)

This is what I was trying to point out, but wasn't sure what Microchip had
released about it yet.  This is a major difference from previous parts, and
I think 10 year lifetime is a serious limitation.  That would have been
unsuitable for the vast majority of my projects.

> I've seen the "J" in the partnumber in the recent past but do not know
> what the meaning of it is.

I believe that indicates a particular fab process (1/4 micron?).  These
chips all seem to have the characteristic of low flash retention and that
they only run at 3.3V.


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