Block information identification implementing method of NAND FLASH chip

An implementation method and block information technology, which is applied in the field of block information identification of NANDFLASH chips, can solve problems such as complex control of storage chips, and achieve the effects of easy promotion, low space overhead, and wide application range

Inactive Publication Date: 2017-10-13
JINAN INSPUR HIGH TECH TECH DEV CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

Most of the new high-speed hard disks use Nand Flash chips as storage media, but the control of this storage chip is complex, requiring control mechanisms such as bad block management and wear leveling

Method used

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Embodiment Construction

[0021] In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention will be further described in detail below in conjunction with specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] The invention provides a method for realizing the block information identification of a NAND FLASH chip, based on the computer system installing the Nand Flash chip, the realization process is:

[0023] First, establish the block information identification table of the Nand Flash chip in the system. The bit width of each entry in the table is determined according to the storage medium used, generally 8bit or 16bit, each block corre...

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Abstract

The invention discloses a block information identification implementing method of an NAND FLASH chip. Based on a computer system with the Nand Flash chip, firstly, a block information identification table of the Nand Flash chip is established in the system and used for storing block information and corresponding index address information, wherein the block information comprises good block identification and bad block identification; the Nand Flash chip is subjected to write operation, read operation and erasure operation, when the block information is marked as good blocks in the block information identification table, corresponding operation is carried out, and when the block information is marked as bad blocks, skipping is carried out; when failure occurs, corresponding block identification in the block information table is bad block identification; when all the good blocks are used up, a Nand Flash chip overwrite signal is sent to the system. Compared with the prior art, according to the block information identification implementing method of the NAND FLASH chip, logic address mapping is completed through bit data, flexible logic address mapping and bad block management are completed with extremely low space expenses, and the method is high in practicality, wide in application range and easy to popularize.

Description

technical field [0001] The invention relates to the technical field of Nand Flash, in particular to a method for realizing block information identification of a NAND FLASH chip that can quickly locate the problem. Background technique [0002] Nand Flash memory is a kind of flash memory. It adopts nonlinear macro-cell mode inside, which provides a cheap and effective solution for the realization of solid-state large-capacity memory. Especially in the fields of radar and aerospace, the capacity and read / write of storage devices Speed ​​requirements are very demanding. With the continuous development of computer technology, the capacity and speed of storage devices have been greatly improved. Most of the new high-speed hard drives use Nand Flash chips as storage media, but the control of this storage chip is complex, requiring control mechanisms such as bad block management and wear leveling. [0003] Based on the present situation above, the present invention proposes a met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F12/06
Inventor 赵鑫鑫姜凯李朋尹超
Owner JINAN INSPUR HIGH TECH TECH DEV CO LTD
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