Estimating capacitances using information including feature sizes extracted from a netlist
US7036096B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2003 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | May 6, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F30/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The capacitances of one or more inputs/outputs of a circuit are estimated by using an extraction tool (120) to extract information associated with the inputs/outputs from a netlist. The information includes information associated with circuit devices directly connected to the inputs/outputs, particularly information related to device connectivity and the feature sizes of the device. Once the information is extracted, a capacitance determination element (130) aggregates the feature sizes of all the circuit devices connected to each respective input or output, to obtain aggregate feature sizes for each respective input/output. The aggregate feature size is used in determining the total capacitance of the input/output. The total capacitance thus determined can be provided to a timing analysis tool (140), which uses the total capacitance of each input or output to generate a timing model for the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.