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.

Date of Patent:
Sep. 19, 2017

Filed:

Sep. 07, 2016
Applicant:

Samsung Electronics Co., Ltd., Suwon-si, KR;

Inventors:

Seung-jun Shin, Incheon, KR;

Tae-young Oh, Suwon-si, KR;

Kwang-il Park, Yongin-si, KR;

Assignee:

SAMSUNG ELECTRONICS CO., LTD., Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01); G11C 11/406 (2006.01);
U.S. Cl.
CPC ...
G11C 11/40615 (2013.01);
Abstract

A method of refreshing a memory device includes performing normal refresh operations on memory cell rows in response to a refresh command and performing self-refresh operations on the memory cell rows according to a refresh clock signal in response during a self-refresh mode of the memory device between a self-refresh enter command and a self-refresh exit command. The refresh clock signal has a first self-refresh cycle before the self-refresh begins and a second self-refresh cycle, which may be longer than the first self-refresh cycle, after the self-refresh begins. In some examples, no self-refresh may be performed by the memory device during a self-refresh mode.


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