User Guide

Overview
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MODEL The name of the model referenced for simulation. This name
must match the name of the .model or .subckt definition of the
simulation model as it appears in the Model Library file (.lib).
For example, if your design includes a 2N2222 bipolar transistor,
with the .model name Q2N2222, then the MODEL attribute on
the symbol for that part will be Q2N2222. This
MODEL attribute
can then be referenced in the
TEMPLATE attribute for netlisting:
TEMPLATE=Q^@REFDES %c %b %e @MODEL
where
REFDES=Q1 and MODEL=Q2N2222, could result in a netlist
entry of Q_Q1 4 6 8 Q2N2222.
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In the schematic editor Edit Attributes dialog, the
MODEL
attribute is marked with an asterisk. This means that the
attribute is not changeable using this dialog. You must select
Model from the Edit menu and use the Edit Model dialog box to
either change the model reference or to create an instance model.
To edit the underlying model definition of a part, select Model
from the Edit menu in the symbol editor, not in the schematic
editor.
PART The name of the part that was retrieved from the Symbol Library
and placed. When you use Get New Part, to select and place a
part, the
PART attribute reflects the name of the part that you
selected. The value of this attribute will not change, for instance,
when you change the
MODEL attribute. You can always see what
part you placed by referring to the value of this attribute, which
is usually displayed on the schematic for all devices (for
breakout devices, the
MODEL attribute is the one visible on the
schematic). The
PART attribute is only changeable in the symbol
editor.
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PKGREF The Package Reference Designator. If there are four gates in a
package (such as, A, B, C, and D), then the PKGREF for all four
parts would be the same (such as, U1) and the
GATE attribute
distinguishes them (such as, U1A, U1B, U1C, U1D). The PKGREF
is the first component of the REFDES attribute. See REFDES
below.
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Table 1 Reserved Attributes (continued)
Attribute Description See Notes