Circuit and method for reading an antifuse

Static information storage and retrieval – Read/write circuit – Having fuse element

Reexamination Certificate

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Details

C365S222000, C365S096000, C327S525000, C327S526000

Reexamination Certificate

active

11509956

ABSTRACT:
An antifuse circuit and antifuse reading method for determining whether an antifuse is programmed or un-programmed. An antifuse circuit includes a sensing circuit having a sense node coupled to the antifuse that is configured to generate a reference current and compare a sense current at the sense node relative to the reference current. The sensing circuit generates an output signal having a first logic level in response to the sense current being greater than the reference current and generates the output signal having a second logic level in response to the sense current being less than the reference current. The logic level of the output signal indicative of whether the antifuse is programmed or un-programmed.

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