Method and system for erasing and writing data based on eflash memory chip

A technology for memory chips and data, applied in memory systems, redundancy in operations, data error detection, electrical digital data processing, etc. Efficiency improvement, the effect of improving efficiency

Active Publication Date: 2022-03-15
无锡融卡科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method solves the technical defects in the existing second solution, but it needs to poll the bitmap before each erasing to find free erasing units, and the efficiency of finding balanced exchange target objects is relatively low

Method used

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  • Method and system for erasing and writing data based on eflash memory chip
  • Method and system for erasing and writing data based on eflash memory chip
  • Method and system for erasing and writing data based on eflash memory chip

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Embodiment Construction

[0047] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

[0049] Hereinafter, the present invention will be described in detail with reference t...

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PUM

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Abstract

The invention discloses a data erasing method and system based on an eFlash memory chip. The method includes: obtaining application data; calling a write interface to judge whether a target erasing unit needs to start equalization exchange; The data is directly written into the target erasing unit; when it is necessary to start the balanced exchange, the available exchange unit is obtained, and the application data is written into the available exchange unit. The method for judging whether the target erasing unit needs to start the balanced exchange includes: calculating and obtaining the benchmark Erasure leveling line height; calculate and obtain the erasing leveling height of the target erasing unit; if the erasing leveling height is greater than or equal to the reference erasing leveling line height, start leveling exchange. On the premise of ensuring that the eFlash memory chip has a relatively high number of times of erasing and writing, the present invention effectively reduces the additional erasing performance overhead caused by introducing a balanced erasing algorithm, and improves the efficiency of finding a balanced exchange target object.

Description

technical field [0001] The invention relates to the technical field of data storage, in particular to a method and system for erasing and writing data based on an eFlash memory chip. Background technique [0002] In the past, embedded systems were mainly used in the control field, and the requirements for data storage were not very high. With the continuous development of information technology, embedded technology has been widely used in many fields, the amount of data information to be stored in embedded systems is increasing, and the demand for data storage and management is getting higher and higher. The requirements for power consumption and shock resistance are more stringent. eFlash (the general term for Flash used as a storage medium in embedded devices) has the characteristics of small size, large storage capacity, low energy consumption, and high cost performance. Compared with traditional storage media, it is more suitable for storing data in embedded systems. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/02G06F11/14
CPCG06F12/0246G06F11/1448
Inventor 马佳伟孙楚昆余彦飞付琴琴
Owner 无锡融卡科技有限公司
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