Method for prolonging service life of Nand Flash chip

A chip and life-span technology, applied in static memory, instruments, input/output to record carriers, etc., can solve the problem of not reaching the balance of read and write times of each block, and achieve good promotion and use value, convenient operation, and easy erasure. effect of times

Inactive Publication Date: 2010-03-10
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

If there is a lot of data like this, it will also cause other blocks to be erased frequently, and the purpose of balancing the read and write times of each block will not be achieved.

Method used

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  • Method for prolonging service life of Nand Flash chip

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Embodiment

[0024] A kind of method that improves the service life of Nand Flash chip of the present invention, the data block Block in the Nand Flash chip is divided into dynamic storage area or static storage area, and under the condition of setting, dynamic storage area and static storage area area conversion , so as to achieve the balance of read and write times; by a parameter E i To determine whether each data block Block is a dynamic storage area or a static storage area, E i =αX i / (∑X i / n), where Block i is the i-th (i is a positive integer) data block Block, X i for Block i erasure times, n is the total number of data blocks, α is a parameter that can be set; set a critical value according to the requirement, when E i When greater than this critical value, the Block i For dynamic memory area, when E i When it is less than this critical value, the Block i for static storage.

[0025] The specific steps are:

[0026] (1), by a parameter E i To determine whether each da...

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Abstract

The invention discloses a method for prolonging the service life of a Nand Flash chip, which belongs to the technical field of service life prolonging of hard disks. The method comprises the followingsteps: dividing data blocks in a Nand Flash chip to a dynamic storage area and a static storage area, and carrying out area conversion between the dynamic storage area and the static storage area under a setting condition so as to achieve the equalization of read-write times. Compared with the prior art, the method for prolonging the service life of a Nand Flash chip can overcome the limitation of a hot point equalization algorithm of the prior art and better equalizes erase times of the blocks in the Nand Flash chip so as to improve the service life of the Nand Flash chip and the service life of an SSD which takes the Nand Flash chip as a storage medium. The invention has reasonable design and convenient operation.

Description

technical field [0001] The invention relates to a technology for prolonging the service life of a hard disk, in particular to a method for improving the service life of a NandFlash chip. Background technique [0002] Nand Flash is the main non-volatile flash memory chip on the market now, and it is a kind of memory chip. The structure of Nand Flash can provide extremely high cell density, can achieve high storage density, and the speed of writing and erasing is also very fast. The Nand Flash chip has the characteristics of fast speed, small size, low power consumption, light weight, shock resistance and data loss. The SSD (Solid State Disk or Solid State Drive) with the Nand Flash chip as the storage medium and the mechanical part Compared with the traditional hard disk, it also has the above advantages. [0003] At present, mainstream SSDs usually use Nand Flash chip technology. The Nand Flash chip flash memory array is divided into a series of 128kB Blocks (Block is the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/10G11C29/00G06F3/06
Inventor 于治楼李峰姜凯梁智豪
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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