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A mass storage device having both xip function and storage function

A technology for large-capacity storage and storage functions, applied in storage systems, household appliances, transportation and packaging, etc.

Inactive Publication Date: 2008-10-29
爱存株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still the problem of needing to separately manufacture the memory for storing program codes and the memory for storing large-capacity data

Method used

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  • A mass storage device having both xip function and storage function
  • A mass storage device having both xip function and storage function
  • A mass storage device having both xip function and storage function

Examples

Experimental program
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Effect test

Embodiment Construction

[0051] Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

[0052] figure 2 is a block diagram showing a mass storage device for a mobile phone according to an embodiment of the present invention.

[0053] like figure 2 Shown, the mass storage device that is used for mobile phone of an embodiment of the present invention comprises CPU10, NAND flash memory 30, controller 20 inserted between CPU 10 and NAND flash memory 30, and the DRAM35 that is directly connected to CPU 10 as main memory (Dynamic Random Access Memory).

[0054] The NAND flash memory 30 of the present invention is divided into a local execution area 31 for storing program codes such as boot codes and a storage area 33 for storing large-capacity data. Here, the division ratio of the local execution area 31 and the storage area 33 may be changed according to conditions or purposes thereof.

[0055] The controller 20 is used to contr...

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PUM

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Abstract

A mass storage device for mobile phone having both XIP function and storage function is disclosed. The mass storage device having both XIP function and storage function comprises a NAND flash memory divided into an XIP (execute-in-place) area for storing a program code and a storage area for storing a mass data; and a controller for controlling the XIP area in such a manner that a host can be accessible to the XIP area through a NOR interface port at the request of an arbitrary access from the host and performing a storage interface function in such a manner that the host can be accessible to the storage area in a block unit through a storage interface port at the access request of a block unit from the host.

Description

technical field [0001] The present invention relates to a mass storage device for a mobile phone with a local execution function and a storage function, and more particularly to a mass storage device for a mobile phone with a local execution function and a storage function, wherein the NAND flash memory is divided It is a local execution (execute-in-place, XIP) area for executing program codes and a storage area for storing large-capacity data, and implements a controller for directly arbitrating and controlling local execution functions and storage control functions, Therefore, each function of the NOR flash memory and the NAND flash memory can be realized in one NAND flash memory. Background technique [0002] Usually, flash memory is a kind of non-volatile memory, such as ROM (Read only memory), which can save the content recorded once and provide a writing function even without power supply. Flash memory is classified into NOR flash memory and NAND flash memory, wherein...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/00G06F13/14
CPCG06F12/0246G06F2212/2022G06F2212/214G06F12/0866B62B3/04B62B3/005B62B5/06B65F1/1415B65B67/1233B65F2210/132
Inventor 徐芸植
Owner 爱存株式会社
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