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:
Sep. 17, 2002
Filed:
Aug. 14, 2000
Applicant:
Inventor:
Hung Pham Le, San Jose, CA (US);
Assignee:
Exar Corporation, Fremont, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/900 ; H01L 2/182 ;
U.S. Cl.
CPC ...
H01L 2/900 ; H01L 2/182 ;
Abstract
A programmable fuse structure using an MOS transistor. A voltage potential is switched across the gate of the MOS transistor, with the gate resistance causing it to heat the MOS structure. This causes a short at one or more of a number of locations in the MOS structure, thereby programming the MOS transistor. A programming circuit with the MOS transistor in a feedback path is provided. This feedback provides a self-timing feature, such that immediately after the fuse is programmed, its programming operation ceases.