US Patent 7102951 OTP antifuse cell and cell array

Patent 7102951 was granted and assigned to Intel on September, 2006 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Intel

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7102951

Date of Patent

September 5, 2006

Patent Application Number

10979605

Date Filed

November 1, 2004

Patent Primary Examiner

‌

Tuan T Nguyen

Patent abstract

Different embodiments of a one-time-programmable antifuse cell included. In one embodiment, a circuit is provided that includes an antifuse element, a high voltage device, and a sense circuit. The antifuse element has a voltage supply terminal to be at a sense voltage during sensing/reading and a higher programming voltage during programming. The sense circuit is configured to enable programming the antifuse element during programming and to sense the state of the antifuse element during sensing. The high voltage device is coupled between the antifuse element and the sense circuit to couple the antifuse element to the sense circuit during programming and sensing and to protectively shield the sense circuit from the higher programming voltage during programming.