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. 28, 1999
Filed:
Feb. 24, 1998
Applicant:
Inventors:
Nobuaki Takashina, Kawasaki, JP;
Masanobu Yoshida, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ;
U.S. Cl.
CPC ...
36518513 ; 36518511 ; 36518904 ;
Abstract
An electrically erasable programmable nonvolatile semiconductor memory has a memory cell array having a plurality of memory cells which are placed as a matrix configuration. The memory cell array is divided into a plurality of memory cell blocks having required sizes by splitting each bit line of the memory cell array at: an optional position. This memory provides a dual operation function without complicating the circuit thereof or increasing the chip size thereof. The bit structure of each memory cell block to be divided from the memory cell array is variable.