User`s guide

7
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18 Di
g
ital Device Modelin
g
INLD and OUTLD
These are used in the calculation of loading capacitance, which
factors into the propagation delay discussed under Timing
Models on Timing Model
on page 7-11. Note that INLD does
not apply to stimulus generators because they have no input
nodes.
DRVH and DRVL
These are used to determine the strength of the output. Strengths
are discussed on Defining Output Strengths
on page 7-21.
DRVZ, INR, and TSTOREMN
These are used to determine which nets should be simulated as
charge storage nets. These are discussed on Charge Storage Nets
on page 7-23.
TPWRT
This is used to specify the pulse width above which the noise
immunity behavior of a device is to be considered. See Inertial
delay on page 7-15 on inertial delay for detail.
The following UIO model parameters are needed only when
creating models for use in mixed-signal simulations, and
therefore only apply to PSpice A/D simulations.
AtoD1 throu
g
h AtoD4, and DtoA1 throu
g
h DtoA4
These are used to hold the names of interface subcircuits. Note
that AtoD1 through AtoD4 do not apply to stimulus generators
because digital stimuli have no input nodes.
DIGPOWER
This is used to specify the name of the digital power supply
PSpice A/D should call if one of the AtoD or DtoA interface
subcircuits is called.