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. 08, 2009
Filed:
Oct. 04, 2006
Applicant:
Keiichiro Kikuchi, Fukushima-ken, JP;
Inventor:
Keiichiro Kikuchi, Fukushima-ken, JP;
Assignee:
Spansion LLC, Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention is a semiconductor device that includes a memory cell array having non-volatile memory cells, and a control circuit that writes data into the memory cell array by programming memory cells to be programmed to a first level and then programming the memory cells to a second level, and its control method. According to the present invention, the time necessary for writing data can be reduced by shortening the time for programming to the first level. Further, a required data retention time can be secured by programming to the second level.