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:
Nov. 16, 1999
Filed:
Jul. 21, 1998
Applicant:
Inventors:
Sadao Yoshikawa, Yoro-gun, JP;
Shigenori Shibata, Anpachi-gun, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518503 ; 36518518 ; 36518521 ;
Abstract
A word line is connected to a control gate of memory cell transistor, and a bit line and a source line are connected to a drain and a source of the memory cell transistor, respectively. A write clock having a certain crest value is applied to the source line, and an earth potential or a power supply potential is applied to the bit line in response to a read clock having a phase which is opposite to that of the write clock. A row selection clock which synchronizes with the write clock and a crest value of which is de-escalated is applied to the word line.