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:
Mar. 28, 2017

Filed:

Feb. 24, 2015
Applicant:

Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;

Inventor:

Yasuyuki Eguchi, Kawasaki Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 29/00 (2006.01); G06F 12/0868 (2016.01); G06F 11/10 (2006.01); G11C 29/52 (2006.01); G11C 7/22 (2006.01); G11C 8/12 (2006.01); G11C 29/04 (2006.01);
U.S. Cl.
CPC ...
G06F 12/0868 (2013.01); G06F 11/1068 (2013.01); G11C 7/22 (2013.01); G11C 8/12 (2013.01); G11C 29/52 (2013.01); G11C 2029/0411 (2013.01);
Abstract

A memory system includes: a memory controller which executes a data access process with an external device using an access unit; a first memory which is connected to the memory controller via a bus and has a first latency; and a second memory which is connected to the memory controller via a bus and has a second latency longer than the first latency. The access unit comprises a first access size assigned to the first memory and a second access size assigned to the second memory. The memory controller executes a data access process with the first memory using the first access size, and executes a data access process with the second memory using the second access size.


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