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Method for ensuring nand flash write balance

A technology of equalization and write times, applied in the input/output process of data processing, instruments, input/output to record carriers, etc., can solve the problems of increasing product cost, product damage, frequent writing of configuration files and data files, etc. Achieve the effect of prolonging the service life

Pending Publication Date: 2022-05-24
TAICANG T&W ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has the following two defects: 1. Waste of space: According to the current usage method, when developing embedded software, the partitions are planned in advance, and the space required by each partition is allocated in order, no matter how much the partitions are used. , so that each partition has a large free area, which causes a lot of waste and increases the product cost; 2. Write balance cannot be performed: when software is designed, firmware, configuration files, and data files are all designed to have fixed In this area, the number of firmware writes is small, and the configuration files and data files are written more frequently. This will easily cause the area where the configuration files and data files are stored to be particularly vulnerable. If there is no perfect bad block management function at this time, the product will be damaged. up

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  • Method for ensuring nand flash write balance
  • Method for ensuring nand flash write balance
  • Method for ensuring nand flash write balance

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Embodiment Construction

[0030] It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

[0031] In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientation or positional relationship indicated by vertical, horizontal, top, bottom, inner, outer, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and The description is simplified rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be constru...

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Abstract

The invention provides a method for ensuring write balance of nand flash, which comprises the following steps of: performing level marking on the erasing times of each block in the Nand flash, and selecting the block with the optimal level in a block idle area for distribution when an operation is applied. According to the method for ensuring the write balance of the nand flash, the service life of the nand flash is prolonged, and the service life of a product is prolonged.

Description

technical field [0001] The invention belongs to the field of embedded technology, and in particular relates to a method for ensuring NAND flash write balance. Background technique [0002] At present, the use of Nand Flash in the embedded system is the same as that of ordinary flash, which is based on the data storage order and distribution after programming by the programmer, and the location remains unchanged. This method has the following two defects: 1. Waste of space: According to the current usage mode, the partitions are pre-planned in the development of embedded software, and the space required by each partition is allocated in order, no matter how much the partitions are used. , so that each partition has a large free area, which causes a lot of waste and increases the cost of the product; 2. Unable to perform write balance: During software design, firmware, configuration files, and data files are designed to exist in fixed In the area, the firmware is written less...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/061G06F3/0638G06F3/062G06F3/0616G06F3/0679
Inventor 潘菊平
Owner TAICANG T&W ELECTRONICS CO LTD