Automated method for adding attributes identified on a schematic

Details Automated method for adding attributes identified on a schematic Automated method for adding attributes identified on a schematic

1998-01-26

1999-05-04

Teska, Kevin J.

Boots, shoes, and leggings

364490, G06F 1750

Patent

active

059010665

ABSTRACT:
An attribute on a netlist (31) is placed on a layout (33) to allow an automated approach for adding a feature to the layout (33) to be implemented. The netlist (31) or schematic diagram of a circuit is simulated on a Computer Aided Design (CAD) tool to verify circuit functionality. A layout tool (32) generates the layout (33) of the netlist (31). Adding a feature, for example, an extra implant to a source region of a device requires knowledge of device orientation not included in the layout (33). A Layout Versus Schematic (LVS) program (34) is run with the netlist (31) and the layout (33). Connectivity information from the LVS run is retrieved and placed in a connectivity mapping file (35). A mapping program (36) uses the connectivity mapping file (35) and the layout (33) to generate layers indicating and marking device orientation. The layers when added to the layout (33) produce an oriented layout (37). A layer generation program (38) uses the oriented layout (37) and the connectivity mapping file (35) to generate layers required to produce the feature on devices of the oriented layout (37).

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