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:
Jan. 24, 2017
Filed:
Dec. 09, 2014
Applicant:
SK Hynix Inc., Icheon-si, Gyeonggi-do, KR;
Inventor:
Chun Seok Jeong, Icheon-si, KR;
Assignee:
SK HYNIX INC., Icheon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/58 (2006.01); G11C 29/02 (2006.01); G11C 29/50 (2006.01); G11C 29/44 (2006.01);
U.S. Cl.
CPC ...
G11C 29/025 (2013.01); G11C 29/028 (2013.01); G11C 29/50008 (2013.01); G11C 2029/4402 (2013.01);
Abstract
An embodiment may include a first replica driver group configured for replicating an output driver of a physical area. A second replica driver group configured for replicating an output driver of a test electrode area for direct access of a memory, and an impedance calibration unit configured to independently perform an impedance matching operation of the first replica driver group and the second replica driver group.