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:
Apr. 23, 2002
Filed:
Mar. 06, 2001
Applicant:
Inventors:
Masahiro Niimi, Kasugai, JP;
Yasuharu Sato, San Jose, CA (US);
Tadao Aikawa, Kawasaki, JP;
Hitoshi Ikeda, Kawasaki, JP;
Hiroyuki Kobayashi, San Jose, CA (US);
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C 8/00 ;
U.S. Cl.
CPC ...
G11C 8/00 ;
Abstract
A semiconductor memory device that performs a flash write operation without increasing the circuit area. Column selection lines CL -CL extend parallel to word lines at locations corresponding to where column gates are formed. During a flash write mode, the subcolumn decoder simultaneously selects the column selection lines. This writes cell information to every memory cell connected to the selected word line.