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:
Oct. 03, 2000
Filed:
May. 12, 1999
Applicant:
Inventors:
Tamiji Akita, Sapporo, JP;
Katsuya Yoshida, Kanagawa, JP;
Assignee:
Fujitsu Limited, Kanagawa, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365200 ; 365 96 ;
Abstract
A redundancy decision circuit for specifying a redundant memory cell in a memory cell array when a normal cell is defective. The circuit includes a switching element, a fuse and a load circuit connected in series between high and low potential supplies. A switching driver drives the switching element. A hold circuit latches the potential at a node between the switching element and one of either the fuse and the load circuit. The circuit then generates a redundant decision signal.