The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2007
Filed:
Mar. 14, 2006
Applicants:
Vincent Gosmain, Aix-en-Provence, FR;
Florent Garcia, Fuveau, FR;
Inventors:
Vincent Gosmain, Aix-en-Provence, FR;
Florent Garcia, Fuveau, FR;
Assignee:
Atmel Corporation, San Jose, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An autonomous antifuse cell providing protection against intruders includes an antifuse, sense circuitry, feedback circuitry, program circuitry, and blocking circuitry. The blocking circuitry blocks access of any programming voltage input signals to the antifuse device if the antifuse is previously blown and when power is applied to the cell. In an exemplary embodiment, the antifuse cell uses only a single external access pin. Once the antifuse device is blown and during subsequent power-up operations, intrusion is prevented.