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:
Mar. 22, 2011
Filed:
Aug. 05, 2005
Applicants:
Vladislav Vashchenko, Palo Alto, CA (US);
Peter J. Hopper, San Jose, CA (US);
Yuri Mirgorodski, Sunnyvale, CA (US);
Inventors:
Vladislav Vashchenko, Palo Alto, CA (US);
Peter J. Hopper, San Jose, CA (US);
Yuri Mirgorodski, Sunnyvale, CA (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C 17/14 (2006.01); G11C 17/18 (2006.01); G11C 17/08 (2006.01); H01H 37/76 (2006.01); H01H 85/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a programmable circuit making use of fuse cells, a snapback NMOS or NPN transistor or SCR without reversible snapback capability is used as an anti-fuse, and programming comprises biasing the control electrode of the transistor to cause the transistor to go into snapback mode.