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US 6,675,361 B1Granted
Method of constructing an integrated circuit comprising an embedded macro
AssigneeHyundai Electronics America
InventorHarold S. Crafts
Life of this patent
Estimating the term…
Abstract
The invention concerns integrated circuits in which a MACRO is embedded in a standard cell array. One level of metal is devoted exclusively to non-local interconnect, and a layer of polysilicon is devoted to local interconnect, thereby saving significant space.
Claims6
A method of constructing an integrated circuit, comprising:
- constructing said integrated circuit from multiple physical layers of interconnect;
- providing a standard cell array constructed of transistors, said standard cell array having a power bus;
- embedding a MACRO in said standard cell array after said providing a standard cell array;
- running a plurality of computer simulations of said MACRO;
- changing dimensions of at least one of said transistors in different simulations;
- identifying transistor dimensions which provide superior timing performance;
- coupling said MACRO to said power bus of said standard cell array;
- fabricating said MACRO according to said identified transistor dimensions which provide superior timing performance;
- utilizing a second layer of metallization comprising no local interconnect as part of said MACRO.
6 more elements
A method of constructing an integrated circuit, comprising:
- a) providing a standard cell array constructed of transistors, said standard cell array having a power bus;
- b) after said providing a standard cell array, embedding a MACRO in said standard cell array;
- c) running a plurality of computer simulations of said MACRO;
- d) changing dimensions of at least some of said transistors;
- e) identifying transistor dimensions which provide preferred timing performance for said integrated circuit;
- f) coupling said MACRO to said power bus of said standard cell array;
- and
- g) utilizing a second layer of metallization comprising no local interconnect as part of said MACRO.
5 more elements
Dependencies are inferred from the claim text.