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:
May. 28, 1985
Filed:
Dec. 14, 1982
Applicant:
Inventors:
Katuyuki Yamada, Kawasaki, JP;
Kazuhiro Toyoda, Yokohama, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365189 ; 365203 ;
Abstract
A semiconductor memory device in which a holding current continuously flows from word selection lines through memory cells to hold lines. Current mirror circuits are placed at the base of each of the transistors which switch discharge currents on and off in the word line discharge circuits. Thus, the discharge circuit is independent of the effects of the operation of other discharge circuits and the word line discharge circuit is less affected by power source fluctuations. This allows a semiconductor memory device having a high access speed.