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:
Sep. 22, 1981
Filed:
Oct. 22, 1979
Applicant:
Inventors:
Masao Nakano, Kawasaki, JP;
Tomio Nakano, Kawasaki, JP;
Yoshihiro Takemae, Kawasaki, JP;
Katsuhiko Kabashima, Kawasaki, JP;
Assignee:
Fujitsu Limited, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365206 ; 365210 ; 365154 ;
Abstract
A semiconductor memory device having flip-flop circuits, in which first and second bit lines are connected to each of the flip-flop circuits as a sense amplifier, the potential of the second bit line being opposite to the potential of the first bit line, and the first and second data bus lines cross perpendicularly to the first and second bit lines, respectively, the first and second dummy lines are arranged in parallel with the first and second data bus lines respectively, in order to prevent erroneous operation of an I/O amplifier connected to the first and second data bus lines.