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:
Feb. 03, 2015
Filed:
Dec. 17, 2012
SK Hynix Inc., Icheon, KR;
Dong Wook Jang, Seoul, KR;
SK hynix Inc., Icheon, KR;
Abstract
An impedance calibration circuit includes a first calibration voltage driver configured to operate in response to a first enable signal, compare a first calibration voltage signal with a first reference voltage signal, and drive the first calibration voltage signal, a first control code generator configured to operate in response to a second enable signal, compare the first calibration voltage signal with a first target voltage signal, and generate a first control code signal, and a first reference voltage generator configured to generate the first reference voltage signal in response to the first control code signal.
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