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:
Nov. 16, 1993
Filed:
Jun. 12, 1991
Applicant:
Inventors:
Youichi Suzuki, Yokohama, JP;
Makoto Segawa, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36523003 ; 365 63 ;
Abstract
In the semiconductor memory device, memory cells are divided into plural blocks; each block is further divided into plural I/O unit groups; and furthermore each I/O unit group is divided into plural small groups. The word lines provided for each small group of memory cells arranged at similar locations in each unit group are connected in common to a word line selecting line selected by a select circuit. Therefore, the number of memory cells connected to one word line can be reduced to decrease the power consumption and to increase the operating speed, without increasing the wiring capacitance and the chip size.