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:
Jul. 23, 1991
Filed:
Aug. 10, 1989
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365218 ; 365185 ; 36523003 ;
Abstract
In a non-volatile semiconductor memory of this invention, a memory cell array constituted by a plurality of memory cells is divided into a plurlaity of blocks, and erase lines which are common to the respective blocks and independent from each other are arranged. In the data write mode, a predetermined voltage is applied to only the erase line connected to a selected one of the blocks.