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:
Jan. 23, 1990
Filed:
Oct. 26, 1987
Applicant:
Inventors:
Tomohisa Wada, Hyogo, JP;
Toshihiko Hirose, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518901 ; 365154 ;
Abstract
A static semiconductor memory device comprises a plurality of memory cells each connected to complementary bit line pairs and to word lines, a row decoder for selecting any of the word lines, and a load and a transfer gate connected to the bit line pairs. When data '0' or '1' is written into all of the memory cells, the load is cut off from the bit lines by a current cutoff circuit, the bit lines are fixed to a predetermined potential by a current fixing circuit, and all of the word lines are driven by a word line driving circuit, so that all of the memory cells simultaneously enter a common state.