NAND flash memory parameter automatic detecting system

A technology of flash memory and parameters, which is applied in the field of flash memory, automatically detects and reads the interface parameters of NAND flash memory devices, and can solve the problems of not fully realizing the potential benefits of cache hierarchy and simple cache management process

Active Publication Date: 2014-06-25
HONG KONG APPLIED SCI & TECH RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This configuration increases the effective computational bandwidth of the flash implementation, but its relatively simple cache management process, in which data can only be read from the cache when it is in the cache, does not fully realize the full potential benefits of the cache hierarchy

Method used

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  • NAND flash memory parameter automatic detecting system
  • NAND flash memory parameter automatic detecting system
  • NAND flash memory parameter automatic detecting system

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Embodiment Construction

[0043] In the following description, as a preferred embodiment, a system and method for automatically detecting parameters of a NAND flash memory and code prediction of cache system startup instructions will be described. It will be apparent to those skilled in the art that modifications, including additions and / or substitutions, can be made without departing from the scope and spirit of the present invention. In order not to obscure the present invention, some specific details will be omitted. However, the present disclosure will enable those skilled in the art to practice the teachings without undue experience.

[0044] refer to image 3 , the automatic detection process of NAND flash memory parameters includes a first step 301: resetting the flash memory controller. Then step 302: send a flash memory command to read ID, the flash memory controller tries to read the device identification code of the connected NAND flash memory device; only return a valid device identificat...

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Abstract

A system comprising a NAND flash memory device having a multiplicity of parameters; a flash controller configured to perform a NAND flash memory parameter automatic detection process including reading a device identifier of the NAND flash memory device and proceeding if a valid device identifier value is returned, detecting an address cycle and a block type of the NAND flash memory device, detecting a page size of the NAND flash memory device, detecting a spare size of the NAND flash memory device, detecting a memory size of the NAND flash memory device, and detecting a block size of the NAND flash memory device.

Description

【Technical field】 [0001] The present invention generally relates to electronic storage devices, and in particular to flash memory, wherein the interface parameters of flash memory devices vary according to capacity, model and brand. More particularly, the present invention relates to automatic detection and reading of interface parameters of NAND flash memory devices. 【Background technique】 [0002] Flash memory is a non-volatile electronic data storage circuit that can be electronically programmed to retain data and can be repeatedly erased. Therefore, it is very suitable as a rewritable data storage medium for electronic and computer systems. NAND flash memory is a special type of flash memory that uses floating-gate transistors connected in series. NAND flash memory technology is widely used in computer systems, digital cameras, portable music players, USB flash drives, memory cards, and SmartMedia TM Card. [0003] Depending on the manufacturer, model, and technology ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G11C29/56
CPCG11C16/20G11C29/82
Inventor林志豪何家良
OwnerHONG KONG APPLIED SCI & TECH RES INST