I would like to simulate a PIC pin from an 18F/30F or 33F driving a 
MOSFET.  I can get the MOSFET model and the rest of the circuit's parts' 
models no problem.  But, the driving abilities of the PIC itself will be 
quite important and will likely establish the upper limit on switching 
freq.  All I know from the spec sheet is the pin's absolute max output 
current (much lower on 33F than 18F/30F).  That doesn't tell me anything 
really.  As far as I can tell that's the point where a pin could be 
damaged, but not indicative of pin performance.  So modeling as a 20mA 
current source with a 5V/0V limit is probably way off base.  Rise and 
fall times will change with loading, which is the critical part I need 
to see simulated, so a fixed rise and fall time on the pin is not 
appropriate either.

So is there a SPICE model of the output on a PIC?  I assume even just an 
nmos/pmos inverter pair could be a fairly close model if the parameters 
were right.  Google is failing me however, as is searching Microchip.  
Am I missing something about the need to do this?  Surely others have 
wanted to model this!

Thanks,
Danny
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