US6012833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Large-scale-integration circuit device and method of manufacturing same
Assignee: Socionext Inc
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Filing: 1997-06-18
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Granted: 2000-01-11
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Expires: 2017-06-18
Abstract
Abstract A method of manufacturing an integration circuit device that includes generating logic library data with respect to a macro that includes a predetermined macro core and boundary cells positioned near input and output terminals of the macro. The logic library data includes delay characteristic data of the boundary cells given as attribute data to the input and output terminals. A logic circuit, that includes a plurality of cells and the macro, is designed, with the cells being connected to the macro core through the boundary cells connected to the input and output terminals. A delay time of the macro is calculated based on the delay characteristic data with respect to the designed logic circuit. A logic simulation on the designed logic circuit is effected based on the calculated delay time.
Inventors
- 👤 Satoru Yoshikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:19
CPC Classifications
H; H10; H10D; H10D89/00; H10D89/10; G; G06; G06F; G06F30/00; G06F30/30; G06F30/32; G06F30/33
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
194 words
A method of manufacturing an integration circuit device, comprising the steps of: generating logic library data with respect to a macro that includes a macro core having a predetermined function and boundary cells positioned near input and output terminals of the macro core, wherein an input terminal is connected to a plurality of first cells of the macro core, or the input or output terminals of the macro core are connected to a first cell of the macro core via a substantial delay line, said logic library data including delay characteristic data of the boundary cells given as attribute data to input and output terminals of the macro; designing a logic circuit having at least a plurality of second cells and said macro, said plurality of second cells being connected to the input and output terminals of the macro so as to be connected to the input and output terminals of the macro core through the boundary cells; calculating a delay time of the macro based on said delay characteristic data with respect to the designed logic circuit; and effecting a logic simulation of the designed logic circuit based on the calculated delay time.
Claim 2
Independent Claim
194 words
A method of manufacturing an integration circuit device, comprising the steps of: generating logic library data with respect to a macro that includes a macro core having a predetermined function and boundary cells positioned near input and output terminals of the macro core, wherein an input terminal is connected to a plurality of first cells of the macro core, or the input or output terminals of the macro core are connected to a first cell of the macro core via a substantial delay line, said logic library data including delay characteristic data of the boundary cells given as attribute data to input and output terminals of the macro; designing a logic circuit having at least a plurality of second cells and said macro, said plurality of second cells being connected to the input and output terminals of the macro so as to be connected to the input and output terminals of the macro core through the boundary cells; calculating a delay time of the macro based on said delay characteristic data with respect to the designed logic circuit; and effecting a logic simulation of the designed logic circuit based on the calculated delay time.
Claim 3
Dependent Claim
26 words
A method according to claim 1, wherein said delay characteristic data comprises data of delay time characteristics depending on a slew rate of an input signal.
Claim 4
Dependent Claim
23 words
A method according to claim 2, wherein said data of delay time characteristics comprises a characteristic parameter required to calculate the delay time.
Claim 5
Dependent Claim
55 words
A method according to claim 2, wherein said data of delay time characteristics comprises delay time characteristics matched to a decision level for determining a delay time of one of said plurality of second cells which is connected to the input terminal and a decision level for determining a delay time of said macro core.
Claim 6
Dependent Claim
18 words
A method according to claim 1, wherein said delay characteristic data comprises data of an output drive capability.
Claim 7
Dependent Claim
54 words
A method according to claim 5, wherein said data of the output drive capability comprises data of a slew rate of an output signal depending on a slew rate of an input signal and a load capacitance, and a delay time depending on a slew rate of the input signal and the load capacitance.
Claim 8
Dependent Claim
56 words
A method according to claim 5, wherein said data of the output drive capability comprises delay time characteristics matched to a decision level for determining a delay time of one of said plurality of second cells which is connected to the output terminal and a decision level for determining a delay time of said macro core.
Claim 9
Dependent Claim
77 words
An integration circuit device comprising: a plurality of cells; and a macro having a predetermined function; said macro comprising: a plurality of input terminals and output terminals; a macro core having said predetermined function; and a plurality of boundary cells positioned between said input terminals, said output terminals, and said macro core, and connected to said input terminals and said output terminals, wherein said plurality of cells are connected to said macro core through said boundary cells.
Claim 10
Dependent Claim
77 words
An integration circuit device comprising: a plurality of cells; and a macro having a predetermined function; said macro comprising: a plurality of input terminals and output terminals; a macro core having said predetermined function; and a plurality of boundary cells positioned between said input terminals, said output terminals, and said macro core, and connected to said input terminals and said output terminals, wherein said plurality of cells are connected to said macro core through said boundary cells.
Claim 11
Dependent Claim
126 words
A storage medium storing a logic library readable by a computer, comprising: a plurality of cells having cell data; and a macro having macro data, wherein said cell data includes, as attribute data, logic data, data of delay time characteristics depending on slew rates of input signals, and data of output drive capabilities, said macro includes a macro core having a predetermined function, input and output terminals, and boundary cells added near said input and output terminals, and said macro data includes, as attribute data, logic data, data of delay time characteristics depending on a slew rate of an input signal supplied to a boundary cell connected to the input terminal, and data of a drive capability of a boundary cell connected to the output terminal.
Claim 12
Dependent Claim
126 words
A storage medium storing a logic library readable by a computer, comprising: a plurality of cells having cell data; and a macro having macro data, wherein said cell data includes, as attribute data, logic data, data of delay time characteristics depending on slew rates of input signals, and data of output drive capabilities, said macro includes a macro core having a predetermined function, input and output terminals, and boundary cells added near said input and output terminals, and said macro data includes, as attribute data, logic data, data of delay time characteristics depending on a slew rate of an input signal supplied to a boundary cell connected to the input terminal, and data of a drive capability of a boundary cell connected to the output terminal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-01-10 | 2003-07-12 | 2004-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-10 | 2007-07-12 | 2008-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-10 | 2011-07-12 | 2012-01-11 | $7700.00 | Window Closed / Lapsed |