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. 21, 1991
Filed:
Jun. 06, 1989
Applicant:
Inventor:
Tadashi Maruyama, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ;
U.S. Cl.
CPC ...
36523006 ; 365185 ;
Abstract
A memory cell array includes a matrix array of a plurality of memory cells. These memory cells are non-volatile transistors. The memory cells which are arrayed in each row of the memory array, are coupled with a plurality of word lines. The word lines are selected by a row decoder made up of a plurality of partial decoders. In this case, a constant voltage output circuit, which is provided at the outputs of the partial decoders of the row decoder, outputs a constant voltage lower than a power source voltage to a corresponding word line of those word lines when the corresponding word line is selected by the outputs of the partial decoders.