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:
Mar. 19, 2013
Filed:
Sep. 21, 2011
Applicant:
Fumihiko Tachibana, Koganei, JP;
Inventor:
Fumihiko Tachibana, Koganei, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/00 (2006.01); G11C 5/06 (2006.01); G11C 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
According to one embodiment, a dummy cell simulates an operation of a memory cell. A main dummy bit line transmits a signal read out from the dummy cell. An inverter makes a sense amplifier circuit to operate based on a potential of the main dummy bit line. n (n is a positive integer) number of auxiliary dummy bit lines are provided. A switching element connects at least one of the n number of auxiliary dummy bit lines to the main dummy bit line.