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. 10, 2015
Filed:
Dec. 04, 2013
Applicant:
SK Hynix Inc., Gyeonggi-do, KR;
Inventors:
Assignee:
SK Hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/402 (2006.01); G11C 11/406 (2006.01); G11C 8/12 (2006.01); G11C 11/408 (2006.01); G11C 7/04 (2006.01); G11C 8/10 (2006.01);
U.S. Cl.
CPC ...
G11C 7/04 (2013.01); G11C 11/40618 (2013.01); G11C 11/406 (2013.01); G11C 8/12 (2013.01); G11C 8/10 (2013.01); G11C 11/408 (2013.01);
Abstract
A semiconductor memory device includes a plurality of banks; a counting block suitable for counting the activation number of the respective banks, and selecting a bank of which the activation number is larger than or equal to a given number; and a refresh control block suitable for performing a normal refresh operation on the banks in response to a refresh command, and performing an additional refresh operation N times on the selected bank, N being a positive integer.