Semiconductor device manufacturing: process – Including control responsive to sensed condition – Interconnecting plural devices on semiconductor substrate
Patent
1997-04-15
1999-06-15
Chaudhari, Chandra
Semiconductor device manufacturing: process
Including control responsive to sensed condition
Interconnecting plural devices on semiconductor substrate
438129, 438599, H01L 2100
Patent
active
059131012
ABSTRACT:
In order to modify a combination of logic gates based on relationships between physical locations of the logic gates in a semiconductor integrated circuit which has already been subjected to layout design in the middle of design of the semiconductor integrated circuit, circuit portions whose combination is to be modified are specified, then the circuit portions are transformed into logically equivalent intermediate representations (NAND2s, IVs, etc.), then anew combination of the logic gates is generated based on the intermediate representation, and then the prior combination of the logic gates is replaced with the new combination of the logic gates.
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Keutzer, "Dagon: Technology Binding and Local Optimization by DAG Matching", 24th ACM/IEEE Design Automation Conference, pp. 341-347, (1987).
Pedram et al., "Layout Driven Technology Mapping", 28th ACM/IEEE Design Automation Conference, pp. 99-105, (1991).
"Layout Driven Logic Synthesis", pp. 17-19, (1992).
Ishioka Takashi
Murofushi Masako
Chaudhari Chandra
Kabushiki Kaisha Toshiba
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