Abrasion balancing method for writing and erasing of nonvolatile memory device

Abstract

According to the abrasion balancing method for writing and erasing of the nonvolatile memory device, the real-time performance of reading and writing is guaranteed by partitioning the storage interval, the abrasion balancing problem of the nonvolatile memory device is solved by circulating uniform reading and writing, and the function of prolonging the actual effective service life of the nonvolatile memory device is achieved. According to the invention, the capacity and the block granularity of the required storage interval are adaptively adjusted according to the size of the read-write data, and the indexes of the read-write efficiency, the resource loss and the device life cycle are balanced. According to the method, a file system does not need to be mounted, and the method is not limited by operating system types and CPU models.

Description

technical field [0001] The invention belongs to the technical field of storage devices, and in particular relates to a wear leveling method for writing and erasing a non-volatile storage device. Background technique [0002] For data reading and writing of non-volatile memory devices, it is necessary to consider the physical characteristic that the write / erase times of each block unit in the non-volatile memory device are limited, and the write / erase times of a single block unit in the non-volatile memory device After the upper limit is reached, some bits of a single block unit in the device may cause errors in newly written data due to unclean erasure. Therefore, it is necessary to use a wear-leveling (wear-leveling) method to make the write / erase operation act on each block on average, so as to improve the life cycle of the overall use of the non-volatile memory device. [0003] The wear leveling problem of non-volatile storage devices can be solved by mounting the file s...

AI Technical Summary

Problems solved by technology

[0003] The problem of wear leveling of non-volatile storage devices can be solved by mounting the file system. However, there is no uniform standard for the file system, and various file systems exist at the same time. The real-time performance of reading and writing files is also affected by various factors such as file size and wear leveling algorithm.

Moreover, the file system is too redundant, which brings about the loss of system resources such as memory and CPU, which is not suitable for ultra-low power consumption scenarios.

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