Olin Lathrop wrote:
>
> > This is going to be difficult.  The dsPICs have a different pinout in the
> same packages as the 16 and 18 families.  For example, you couldn't plug a
> 30F3013 into a socket intended for a 16F876 or 18F2520.
>   
.
I don't see the difficulty, but since you usually know what you are 
talking about I had best follow up to see if I am missing something.  I 
do not propose to go pin 1 to pin 1, pin 2 to pin 2, right on down for 
the first 28 pins.  Each pin of the 3013 would go to the appropriate 
matching pin, which might or might not be the same physical number.  I 
don't have the datasheet for the 3013 here in front of me, but just for 
argument's sake let us say that Vdd on the 3013 consists of pins 8 and 
13, whereas on the 452 Vdd consists of pins 11 and 32.  So pins 8 and 13 
of the 28-pin socket would be wired to pins 11 and 32 of the 40-pin 
socket.  There would be a lot of crossed wires, obviously, as well as 
some unused pins on the 3013 which would not go to the 452 socket at all 
(appropriate action would have to be taken for them, of course, so that 
they're not left dangling).

There, with that explanation, do you still see a difficulty, other than 
just physically how to get it done??

John


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