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. 06, 2015
Filed:
Jul. 15, 2011
Applicants:
Byoung Sung Yoo, Hwaseong-si, KR;
Chang Won Yang, Icheon-si, KR;
Inventors:
Byoung Sung Yoo, Hwaseong-si, KR;
Chang Won Yang, Icheon-si, KR;
Assignee:
SK Hynix Inc., Gyeonggi-do, KR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 7/10 (2006.01); G11C 16/04 (2006.01);
U.S. Cl.
CPC ...
G11C 16/0483 (2013.01); G11C 2216/14 (2013.01);
Abstract
A semiconductor memory device includes memory cells for storing data, page buffers each configured to comprise a dynamic latch and a static latch on which data to be programmed in to the memory cells or data read from the memory cells are latched, and a control logic configured to store a plurality of refresh mode select codes corresponding to various refresh cycles, and refresh the dynamic latch by exchanging data between the static latch and the dynamic latch according to a refresh cycle corresponding to a selected refresh mode select code.