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:
Dec. 18, 2018
Filed:
Nov. 07, 2014
Applicant:
Hitachi, Ltd., Chiyoda-ku, Tokyo, JP;
Inventors:
Yasuhiro Ikeda, Tokyo, JP;
Yutaka Uematsu, Tokyo, JP;
Hideyuki Koseki, Tokyo, JP;
Masato Shimizu, Tokyo, JP;
Nobushige Nakajima, Tokyo, JP;
Assignee:
HITACHI, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 13/40 (2006.01); G11C 5/06 (2006.01); G11C 16/06 (2006.01); G11C 16/24 (2006.01); G11C 7/10 (2006.01); G11C 16/26 (2006.01); G06F 12/02 (2006.01); G11C 16/04 (2006.01); G06F 13/16 (2006.01);
U.S. Cl.
CPC ...
G06F 13/4022 (2013.01); G06F 13/1684 (2013.01); G06F 13/4068 (2013.01); G11C 5/066 (2013.01); G11C 7/1063 (2013.01); G11C 16/06 (2013.01); G11C 16/24 (2013.01); G11C 16/26 (2013.01); G06F 12/0246 (2013.01); G06F 2212/1056 (2013.01); G06F 2212/263 (2013.01); G06F 2212/7208 (2013.01); G11C 16/0483 (2013.01);
Abstract
A semiconductor memory device includes, in addition to a first switching circuit with which a data system signal line between a plurality of semiconductor memory portions and a memory controller is branched, a second switching circuit with which a non-data system signal line between the plurality of semiconductor memory portions and the memory controller is branched, and the first and second switching circuits share a switching signal line.