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Changing the Parameters of an Instance

Once a template cell has been instantiated, the instance can be changed to represent a new set of parameter values if the template cell is available. Thus, when a design is exported to another site that may wish to modify the cell parameters, the template cells must be exported as well. The template cells are not automatically added to GDSII files or the other file formats. They should be supplied as Xic cells, in addition to the GDSII or other output.

One convenient way to maintain template cells is to place them in a library.

Assuming that the template cell is available, the following procedure can be used to alter an instance to a new parameter set.

  1. Select the instance to modify.

  2. Bring up the Property Editor from the Edit Menu. The editor will show a list of the properties and pseudo-properties of the instance.

  3. In the listing, look for a property number 7198 named `` Tmpl Params''. If this does not exist, the cell is not an instance of a template, or the template has no parameters.

  4. Click on the Tmpl Params property in the list, and press the Edit button in the Property Editor.

  5. The current parameter assignments will be listed on the prompt line, and the user can perform the modifications.

  6. Press Enter after the new parameters have been given. The instance will be rebuilt with the new parameter values.


next up previous contents index
Next: Changing the Parameters of Up: Template (Parameterized) Cells Previous: Adding an Instance of   Contents   Index
Stephen R. Whiteley 2006-10-23