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. 02, 2003
Filed:
Nov. 17, 1999
Applicant:
Inventors:
Syuichi Saito, Kasugai, JP;
Satoru Kawamoto, Kasugai, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 2/900 ;
U.S. Cl.
CPC ...
G11C 2/900 ;
Abstract
A semiconductor memory device includes a memory cell array having memory cells located at the intersections of bit lines and word lines. Driver circuits are connected to groups of the word lines. A first decoder circuit is connected to the driver circuits to selectively activate them. A second decoder circuit is also connected to the driver circuits to activate selected ones of the word lines. In response to a test signal, the first decoder circuit simultaneously activates all of the driver circuits and the second decoder circuit activates the selected ones of the word lines.