On Tue, 27 Jan 2004 20:58:28 +0100, Wouter van Ooijen wrote:
> > What is the difference, from the programmers point of view,
> > between programming a 28pin device and a 40pin device ?
> > If everything else is the same.
>
> Did you also check the programming specifications and fuses bits?
>
> And besides that, I often use scripts that check which chip I am
> programming - this has occasionally saved me from blunders.
>
> > As far as I can see from the line card the 16F767 and 777 have
> > the same amount of flash, no eeprom and so on.
>
> Even if this were completely true it would still be a bad sign of
> screw-up (lack of quality control) from uChip. AFAIK there used to be
> no
> chip types were indistinguishable for a programmer.

I was thinking that these chips just might be the *exact same die*,
just a different number of the pins bonded out. It kind of makes sense
and lots of other chip makers do this. They could actually be the exact
same chip, just a different package and part number.

Otherwise I agree with you Wouter -- they should have different device
ID's if they truly are different chip types.

Matt Pobursky
Maximum Performance Systems

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