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:
Aug. 01, 2017
Filed:
Nov. 10, 2014
Applicant:
SK Hynix Inc., Gyeonggi-do, KR;
Inventor:
Tae Jin Kang, Gyeonggi-do, KR;
Assignee:
SK Hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/02 (2006.01); G11C 7/10 (2006.01); G11C 7/22 (2006.01); G11C 29/06 (2006.01); G11C 29/12 (2006.01);
U.S. Cl.
CPC ...
G11C 7/1084 (2013.01); G11C 7/225 (2013.01); G11C 29/06 (2013.01); G11C 29/12005 (2013.01);
Abstract
A semiconductor apparatus includes a clock buffer and a reference voltage generation unit. The clock buffer generates an internal clock signal, based on first and second clock signals, in a first operation mode, and generates the internal clock signal, based on the first clock signal and a reference voltage, when a normal operation test is performed in a second operation mode. The reference voltage generation unit generates the reference voltage when the normal operation test is performed in the second operation mode.