Data storage method, device and non-volatile memory

Abstract

Embodiments of the present invention provide a data storage method and device and a non-volatile memory (NVM). An NVM controller divides a to-be-written data block and a written-back data block, compares each sub-data block of the to-be-written data block with each sub-data block of the written-back data block to obtain the write power consumption of each sub-data block of the to-be-written data block, determines a write relationship corresponding to the minimum write power consumption of the to-be-written data block according to the write power consumption of each sub-data block of the to-be-written data block, and writes the sub-data blocks of the to-be-written data block into an NVM according to the write relationship corresponding to the minimum write power consumption. By means of the method, the correspondence of the minimum write power consumption is selected by means of comparison, the sub-data blocks of the to-be-written data block are written into the NVM, and thereby the write power consumption of the NVM can be lowered to the lowest level.

Description

technical field [0001] Embodiments of the present invention relate to data communication technology, and in particular to a data storage method, device and nonvolatile memory. Background technique [0002] The characteristic of non-volatile memory (Non-Volatile Memory, referred to as NVM) is that the stored data will not be lost when the power is turned off. Common NVMs include flash memory (Flash Memory), phase change memory (phase change memory, PCM for short), ferroelectric dynamic random access memory (Fe Random Access Memory, FRAM for short), and the like. In the application of NVM, whether it is NVM reset (RESET) operation (that is, write 1 operation), or set (SET) operation (that is, write 0 operation), the energy consumption of a single write of NVM is 10 times higher than that of read energy consumption. -100 times, and NVM needs to continuously perform write operations or erase operations during the working process. Therefore, reducing the number of NVM writes can...

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Problems solved by technology

[0004] The solution in the prior art can reduce the number of writes of NVM to a certain extent, thereby reducing the energy consumption of NVM, but in this solution, each byte requires an additional bit to restore the data, and the storage ratio of additional information is relatively small. Large, when the method of prior art is applied to external storage, a large amount of data will take up more additional storage space

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