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:
Jan. 08, 2008
Filed:
Aug. 15, 2006
Applicants:
Yuki Matsuda, Pasadena, CA (US);
Tadashi Oda, Tomakomai, JP;
Inventors:
Yuki Matsuda, Pasadena, CA (US);
Tadashi Oda, Tomakomai, JP;
Assignees:
Renesas Technology Corp., Tokyo, JP;
Hitachi ULSI Systems Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a nonvolatile memory in which a load on a boosting circuit changes according to the number of rewrite bytes, the boosting circuit is configured so as to perform voltage boosting at a relatively slow predetermined speed regardless of the number of rewrite bytes, whereby stress applied to each storage element is reduced and rewrite resistance is enhanced.