US6288598B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser fuse circuit design
Assignee: Avago Technologies International Sales Pte Ltd
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Filing: 2000-11-02
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Granted: 2001-09-11
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Expires: 2020-11-02
Abstract
Abstract A fuse circuit that includes a fuse and a full latch connected to the fuse. The fuse circuit is configured to receive a plurality of input signals including a preset signal and an enable signal. Preferably, a first pass gate is connected to the fuse and to the full latch and is configured to receive the enable signal and a second pass gate is connected to the full latch and is configured to receive the preset signal. Preferably, an output signal line is connected to the full latch and is configured to carry the output signal. The fuse circuit is configured to set the fuse using the preset signal. Ideally, the fuse circuit is configured to provide no direct path between VDD and VSS while using the preset signal to set the fuse. The fuse circuit is configured to provide an output signal which is dependent on the status of the fuse and the state of the enable signal. Specifically, the fuse circuit may be configured to provide that the output signal is of the same state as the enable signal if the fuse provides an open circuit and is configured to provide that the output signal is of a different state as the enable signal if the fuse provides a short circuit.
Inventors
- 👤 Johnnie Huang
- 👤 Ghasi Agrawal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:43
CPC Classifications
G; G11; G11C; G11C17/00; G11C17/14; G11C17/18
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
78 words
A fuse circuit comprising: a fuse and a full latch connected to said fuse, said fuse circuit configured to receive a plurality of input signals including a preset signal and an enable signal, wherein said fuse circuit is configured to set said fuse using said preset signal, said fuse circuit configured to provide an output signal, wherein a value of said output signal is dependent on a status of said fuse and a state of said enable signal.
Claim 2
Dependent Claim
78 words
A fuse circuit comprising: a fuse and a full latch connected to said fuse, said fuse circuit configured to receive a plurality of input signals including a preset signal and an enable signal, wherein said fuse circuit is configured to set said fuse using said preset signal, said fuse circuit configured to provide an output signal, wherein a value of said output signal is dependent on a status of said fuse and a state of said enable signal.
Claim 3
Dependent Claim
30 words
A fuse circuit as recited in claim 1 , further comprising a pass gate connected to said fuse and to said full latch and configured to receive said enable signal.
Claim 4
Dependent Claim
26 words
A fuse circuit as recited in claim 1 , further comprising a pass gate connected to said full latch and configured to receive said preset signal.
Claim 5
Dependent Claim
48 words
A fuse circuit as recited in claim 1 , further comprising a first pass gate connected to said fuse and to said full latch and configured to receive said enable signal and a second pass gate connected to said full latch and configured to receive said preset signal.
Claim 6
Dependent Claim
27 words
A fuse circuit as recited in claim 1 , further comprising an output signal line connected to said full latch and configured to carry said output signal.
Claim 7
Dependent Claim
33 words
A fuse circuit as recited in claim 1 , wherein said fuse circuit is configured to provide no direct path between VDD and VSS while using said preset signal to set said fuse.
Claim 8
Dependent Claim
37 words
A fuse circuit as recited in claim 1 , wherein said fuse circuit is configured to provide that said output signal is of the same state as said enable signal if said fuse provides an open circuit.
Claim 9
Dependent Claim
37 words
A fuse circuit as recited in claim 1 , wherein said fuse circuit is configured to provide that said output signal is of a different state as said enable signal if said fuse provides a short circuit.
Claim 10
Dependent Claim
62 words
A fuse circuit as recited in claim 1 , wherein said fuse circuit is configured to provide that said output signal is of the same state as said enable signal if said fuse provides an open circuit and is configured to provide that said output signal is of a different state as said enable signal if said fuse provides a short circuit.
Claim 11
Dependent Claim
76 words
A fuse circuit as recited in claim 1 , further comprising a first pass gate connected to said fuse and to said full latch and configured to receive said enable signal and a second pass gate connected to said full latch and configured to receive said preset signal, wherein said fuse circuit is configured to provide that said output signal is of the same state as said enable signal if said fuse provides an open circuit.
Claim 12
Dependent Claim
76 words
A fuse circuit as recited in claim 1 , further comprising a first pass gate connected to said fuse and to said full latch and configured to receive said enable signal and a second pass gate connected to said full latch and configured to receive said preset signal, wherein said fuse circuit is configured to provide that said output signal is of a different state as said enable signal if said fuse provides a short circuit.
Claim 13
Dependent Claim
101 words
A fuse circuit as recited in claim 1 , further comprising a first pass gate connected to said fuse and to said full latch and configured to receive said enable signal and a second pass gate connected to said full latch and configured to receive said preset signal, wherein said fuse circuit is configured to provide that said output signal is of the same state as said enable signal if said fuse provides an open circuit and is configured to provide that said output signal is of a different state as said enable signal if said fuse provides a short circuit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-09-10 | 2005-03-12 | 2005-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-09-10 | 2009-03-12 | 2009-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-09-10 | 2013-03-12 | 2013-09-11 | $7700.00 | Window Closed / Lapsed |