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Data erasing and writing method and system based on eFlash memory chip

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

Active Publication Date: 2020-05-12
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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  • Data erasing and writing method and system based on eFlash memory chip
  • Data erasing and writing method and system based on eFlash memory chip
  • Data erasing and writing method and system 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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Abstract

The invention discloses a data erasing and writing method and system based on an eFlash memory chip. The method comprises the following steps: acquiring application data; calling a writing interface,and judging whether the target erasing unit needs to start balanced exchange or not; when balanced exchange does not need to be started, directly writing the application data into the target erasing and writing unit; when equalization exchange needs to be started, an available exchange unit is obtained, application data is written into the available exchange unit, and the method for judging whether a target erasing unit needs to start equalization exchange or not comprises the steps that the height of a reference erasing equalization line is obtained through calculation; calculating to obtainan erase-write balance height of the target erase-write unit; and if the erase-write balance height is greater than or equal to the reference erase-write balance line height, starting balance exchange. According to the invention, on the premise of ensuring that the eFlash memory chip has a relatively high erasure frequency, the erasure performance overhead additionally generated due to the introduction of the balanced erasure algorithm is effectively reduced, and the efficiency of searching the balanced exchange target object is improved.

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 relatively 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 syste...

Claims

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Application Information

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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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