about offseting the pu and pc

Hello Syed:

   I'm not sure about s2ibis2, but when I have created models
I have always adjusted the Vcc in the Vtable = Vcc - Vmeas equation
to follow Min, Typ and Max voltages. In other words, all three
columns in the pullup table have a 0,0 entry.

             Regards,
             Stephen Peters
             Intel Corp.

Hi,

I have a ques on the Vcc offseting of the pu(Pullup) and
pc(Power Clamp) V/I data.

I am creating a CMOS model with 3.3V supply. This means
TYP=3.3V, MIN=3.0V and MAX=3.6V

There is 'one' voltage table for the three current table.
When I use the Vtable = Vcc - Vmeas to offset the voltage
table, 'Which' Vcc should be used ??

If I use 3.3V, only the TYP curve goes thru the 0,0 point
and the MIN and MAX will not ! The 0,0 point is when
Vcc=Voh (pu curve)

I am not sure how s2ibis2 handles this issue.

Pls comment.

Regards,
Syed.
National Semiconductor Corp.
 
Received on Tue Mar 4 12:37:26 1997