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Memory control device, memory device, information processing system and memory control method

A technology of storage control and control unit, applied in the direction of digital memory information, information storage, static memory, etc., can solve problems such as loss of storage content

Inactive Publication Date: 2014-03-12
SONY SEMICON SOLUTIONS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, DRAM is a non-volatile memory that loses its stored content when the power supply of electricity is interrupted

Method used

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  • Memory control device, memory device, information processing system and memory control method
  • Memory control device, memory device, information processing system and memory control method
  • Memory control device, memory device, information processing system and memory control method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0041] 1. First Embodiment (Refresh Control)

[0042] 2. Variation (Threshold Change)

[0043]

[0044] 【Configuration of information processing system】

[0045] figure 1is a diagram showing an exemplary configuration of an information processing system according to an embodiment of the present invention. The information processing system includes a host computer 100 , a storage controller 200 , and a memory 300 . The storage controller 200 and the memory 300 configure a storage system.

[0046] The host computer 100 issues a command requesting to read or write data, negative refresh, or the like to the memory 300 .

[0047] The memory controller 200 communicates with the host computer 100 to receive commands, and to write and read data into and from the memory 300 . Upon receiving the write command, the memory controller 200 provides an instruction to write the data received from the host computer 100 into the memory 300 . Also, upon receiving the read command, the me...

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PUM

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Abstract

The invention relates to a memory control device, a memory device, an information processing system and a memory control method. The memory control device includes a request determining unit that determines a type of a request, and a control unit that writes read data read from a memory cell array in the memory cell array in units of predetermined pages of the memory cell array when the request is a refresh request, and divides the page of write data into units of groups and writes the page of the write data in the memory cell array over twice or more when the request is a write request.

Description

technical field [0001] The present invention relates to a storage control device. Specifically, the present invention relates to a storage control device for a nonvolatile memory, a storage device, an information processing system, a processing method therein, and a program for causing a computer to execute the method. Background technique [0002] In an information processing system, a dynamic random access memory (DRAM) or the like is used as a working memory. Generally, DRAM is a non-volatile memory, and when the power supply of electric power is interrupted, the stored content is lost. Meanwhile, in recent years, a non-volatile memory (NVM) has been used. Nonvolatile memory is roughly divided into flash memory and nonvolatile random access memory (NVRAM). Flash memory supports data access in units of large size, and nonvolatile random access memory (NVRAM) can be used in small The unit performs high-speed random access. Here, as a representative example of the flash ...

Claims

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Application Information

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IPC IPC(8): G06F12/06G06F3/06G11C16/06
CPCG06F11/1016G06F12/08G06F11/1068G11C2029/0411G11C13/0004G11C13/0007G11C13/0033G11C13/004G11C13/0061G11C13/0064G11C13/0069
Inventor 大久保英明筒井敬一藤波靖中西健一足立直大石井健新桥龙男
Owner SONY SEMICON SOLUTIONS CORP
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