SECURE ELECTRICALLY PROGRAMMABLE FUSE AND METHOD OF OPERATING THE SAME
First Claim
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1. An electrically programmable fuse, comprising:
- at least one fuse element configured to be programmed with contents; and
an inhibitor coupled to said at least one fuse element and configured to be activated to inhibit subsequent reprogramming of said at least one fuse element.
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Abstract
An electrically programmable fuse, a method of operating the same and an integrated circuit (IC) incorporating the fuse or the method. In one embodiment, the fuse includes: (1) at least one fuse element configured to be programmed with contents and (2) an inhibitor coupled to the at least one fuse element and configured to be activated to inhibit subsequent reprogramming of the at least one fuse element.
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Citations
20 Claims
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1. An electrically programmable fuse, comprising:
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at least one fuse element configured to be programmed with contents; and an inhibitor coupled to said at least one fuse element and configured to be activated to inhibit subsequent reprogramming of said at least one fuse element. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of operating an electrically programmable fuse, comprising:
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programming said fuse with contents; and thereafter activating an inhibitor to inhibit reprogramming of said fuse. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An integrated circuit, comprising:
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a substrate; functional circuitry associated with said substrate; and an electrically programmable fuse coupled to said functional circuitry and including; at least one fuse element configured to be programmed with contents, an inhibitor coupled to said at least one fuse element and configured to be activated to inhibit subsequent reprogramming of said fuse, and a manipulator coupled to said at least one fuse element and configured to manipulate said contents retrieved from said at least one fuse element to yield manipulated contents and provide said manipulated contents to said functional circuitry. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification