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US5040150A
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Semiconductor integrated circuit device
Assignee: Fujitsu Semiconductor Ltd
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Filing: 1990-05-24
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Granted: 1991-08-13
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Expires: 2010-05-24
Abstract
Abstract A semiconductor integrated circuit device comprising a first circuit forming a random logic and outputting a plurality of first parallel data of plural bits, a second circuit which receives the plurality of first parallel data and supplies a plurality of second parallel data of plural bits to the first circuit, and a test circuit which divides a part of external parallel data of plural bits smaller in number than the first parallel data into a plurality of third parallel data of plural bits in such a manner that the plurality of third parallel data correspond in number to the plurality of first parallel data.
Inventors
- 👤 Mitsugu Naitoh
- 👤 Junichi Shikatani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:20
CPC Classifications
G; G11; G11C; G11C29/00; G11C29/04; G11C29/08; G11C29/12; G01; G01R; G01R31/00; G01R31/28; G01R31/317; G01R31/3181; G01R31/3185; G01R31/318505; G11C11/00; G11C11/02; G11C11/16
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
104 words
A semiconductor integrated circuit device comprising: a first circuit forming a random logic and outputting a plurality of first parallel data of plural bits; a second circuit which receives said plurality of first parallel data and supplies a plurality of second parallel data of plural bits to said first circuit; and a test circuit which divides a part of external parallel data of plural bits smaller in number than said first parallel data into a plurality of third parallel data of plural bits in such a manner that said plurality of third parallel data correspond in number to said plurality of first parallel data.
Claim 2
Dependent Claim
104 words
A semiconductor integrated circuit device comprising: a first circuit forming a random logic and outputting a plurality of first parallel data of plural bits; a second circuit which receives said plurality of first parallel data and supplies a plurality of second parallel data of plural bits to said first circuit; and a test circuit which divides a part of external parallel data of plural bits smaller in number than said first parallel data into a plurality of third parallel data of plural bits in such a manner that said plurality of third parallel data correspond in number to said plurality of first parallel data.
Claim 3
Dependent Claim
72 words
A semiconductor integrated circuit device as set forth in claim 1, wherein said test circuit comprises an input selector part for switching said plurality of first parallel data and said external parallel data in response to external switch signals, said external parallel data comprising at least said plurality of third parallel data, and said selector part comprising at least input selector circuits corresponding in number to said plurality of third parallel data.
Claim 4
Dependent Claim
22 words
A semiconductor integrated circuit device as set forth in claim 1, wherein said second circuit comprises a single port random access memory.
Claim 5
Dependent Claim
29 words
A semiconductor integrated circuit device as set forth in claim 1, wherein said second circuit comprises a plurality of circuits each having a function equivalent to said second circuit.
Claim 6
Dependent Claim
22 words
A semiconductor integrated circuit device as set forth in claim 1, wherein said second circuit comprises two single port random access memories.
Claim 7
Dependent Claim
27 words
A semiconductor integrated circuit device as set forth in claim 1, wherein said second circuit comprises a single port random access memory and a read only memory.
Claim 8
Dependent Claim
25 words
A semiconductor integrated circuit device as set forth in claim 1, wherein said second circuit comprises a single port random access memory and a multiplier.
Claim 9
Dependent Claim
19 words
A semiconductor integrated circuit device as set forth in claim 1, wherein said second circuit comprises a multiport memory.
Claim 10
Dependent Claim
20 words
A semiconductor integrated circuit device as set forth in claim 1, wherein said second circuit comprises a dual port memory.
Claim 11
Dependent Claim
20 words
A semiconductor integrated circuit device as set forth in claim 1, wherein said second circuit comprises two dual port memories.
Claim 12
Dependent Claim
20 words
A semiconductor integrated circuit device as set forth in claim 1, wherein said second circuit comprises a triple port memory.
Claim 13
Dependent Claim
24 words
A semiconductor integrated circuit device as set forth in claim 1, wherein said second circuit comprises a multiport memory and a read only memory.
Claim 14
Dependent Claim
76 words
A semiconductor integrated circuit device comprising: a random logic circuit; a multiport memory having a plurality of inlet and outlet ports; and a test circuit for testing said multiport memory in response to an external test data; said test circuit being constructed in such a manner that said test data is divided every port of said multiport memory and that said multiport memory is tested as single port memories in accordance with said divided test data.
Claim 15
Dependent Claim
76 words
A semiconductor integrated circuit device comprising: a random logic circuit; a multiport memory having a plurality of inlet and outlet ports; and a test circuit for testing said multiport memory in response to an external test data; said test circuit being constructed in such a manner that said test data is divided every port of said multiport memory and that said multiport memory is tested as single port memories in accordance with said divided test data.
Claim 16
Dependent Claim
67 words
A semiconductor integrated circuit device comprising: a random logic circuit; a single port memory; a multiport memory; and a test circuit for testing said single port and multiport memories in response to an external test data; said test circuit being constructed in such a manner that it divides said single port and multiport memories into a plurality of parts having predetermined bit widths and tests said parts.
Claim 17
Dependent Claim
67 words
A semiconductor integrated circuit device comprising: a random logic circuit; a single port memory; a multiport memory; and a test circuit for testing said single port and multiport memories in response to an external test data; said test circuit being constructed in such a manner that it divides said single port and multiport memories into a plurality of parts having predetermined bit widths and tests said parts.
References Cited (Backward Citations)
US4953129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-12 | 1995-02-11 | 1995-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-12 | 1999-02-11 | 1999-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-12 | 2003-02-11 | 2003-08-13 | $7700.00 | Window Closed / Lapsed |