User Guide

Chapter 6 Creating and Editing Symbols

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Packaging Definitions

Packaging information is kept in a package definition,

separate from the symbol definition. Both are maintained

using the symbol editor. By default, the name of the

package definition for a symbol corresponds to the

symbol name. This can be overridden by explicitly adding

COMPONENT attribute to the symbol. Such an attribute is

generally used for devices that have non-standard part

names such as BJTs, those with names that begin with a

‘Q,’ or for those with more than one type of gate.

Package definitions are stored in package libraries. These

libraries typically have the same name as the

corresponding symbol libraries, but a different extension

(“.plb”). Package libraries are similar to symbol libraries

in that they must be configured into the schematic editor’s

list of libraries.

With the Packaging menu in the symbol editor, you can

create and edit package definitions.

Creating a New Package Definition

You can quickly create a package definition for an existing

symbol.

Creating a package definition for an existing symbol

1 Load the symbol in the symbol editor.

2 From the Packaging menu, select Edit.

3 Click OK to start the Package Wizard.

4 Follow the instructions on the screen.

Creating a package definition from scratch

1 From the Packaging menu, select New to start the

Package Wizard.

2 Follow the instructions on the screen.

Note If you created a symbol with the

Symbol Wizard, it will include creating a

package definition.

Shortcut: press C+E