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:
Dec. 13, 2016
Filed:
Nov. 20, 2015
Applicant:
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Inventors:
Assignee:
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/16 (2006.01); G11C 7/00 (2006.01); G11C 7/10 (2006.01); H03K 3/353 (2006.01);
U.S. Cl.
CPC ...
G11C 7/1057 (2013.01); H03K 3/353 (2013.01);
Abstract
According to one embodiment, a ZQ calibration circuit comprises a replica buffer controller configured to apply electric stress to a replica buffer circuit with a circuit configuration substantially identical to a circuit configuration of an output buffer circuit according to a usage status of the output buffer circuit during a period when no calibration operation is performed.