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. 28, 2017
Filed:
May. 28, 2015
Applicant:
Samsung Electronics Co., Ltd., Gyeonggi-do, KR;
Inventors:
Ki Won Lee, Seoul, KR;
Seung Jun Bae, Gyeonggi-do, KR;
Joon Young Park, Seoul, KR;
Yong Cheol Bae, Gyeonggi-do, KR;
Assignee:
SAMSUNG ELECTRONICS CO., LTD., Suwon-si, Gyeonggi-Do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01); H03K 19/00 (2006.01); G11C 7/10 (2006.01); G11C 29/02 (2006.01); G11C 29/50 (2006.01); G11C 5/14 (2006.01);
U.S. Cl.
CPC ...
H03K 19/0005 (2013.01); G11C 7/1057 (2013.01); G11C 29/021 (2013.01); G11C 29/028 (2013.01); G11C 29/50008 (2013.01); G11C 5/147 (2013.01); G11C 2207/2254 (2013.01);
Abstract
A semiconductor memory device includes a ZQ calibration unit configured to generate a pull-up VOH code according to a first target VOH proportional to a power supply voltage and an output driver configured to generate a data signal having a VOH proportional to the power supply voltage based on the pull-up VOH code, wherein VOH means 'output high level voltage.'