Mentor Graphics Corporation

Yi-Ting Lee

Sridhar Srinivasan

Patrick D Gibson

Padmaja Susarla

Alex Thompson

Hung-Hsu Feng

Probe location candidates for parasitic extraction are identified from geometric elements on a probe layer. The probe layer is a physical layer of a layout design for a circuit design predetermined for placing one or more new probes. The probe location candidates are geometric elements on the probe layer within a boundary of an area having a predetermined size and covering an original probe location or having a distance from the original probe location less than a predetermined value. Moreover, the probe location candidates are conductively connected to the original probe location. One or more new probe locations on the probe location candidates are selected based on predetermined criteria. From the layout design, a parasitic resistance value for parasitic resistance between a geometric element representing a circuit pad or another device pin and the new one or more probe locations is extracted.

Automatic moving of probe locations for parasitic extraction

Aspects of the disclosed technology relate to techniques of connectivity-aware reduction of layout data. With various implementations of the disclosed technology, circuit elements of interest are selected in a circuit design which includes netlist information and layout data. Based at least on pins for the circuit elements of interest, the circuit elements of interest, or both, nets of interest are determined. Cells of interest, comprising cells that are identified based at least on pins for the circuit elements of interest, the circuit elements of interest, or both, are then determined. Based on the nets of interest and the cells of interest, layout geometric elements are selected and may be analyzed for design verification. For electrostatic discharge (ESD) protection verification, the cells of interest may further comprise cells that include portions of power supply grids on top metal layers.

Growing community of inventors

Zhubei, Taiwan

Yi-Ting Lee