Method for reducing power consumption of flash memory chip data writing operation

Abstract

A method for reducing power consumption of flash memory chip data writing operation. Through a precoding processing, user data is changed, and corresponding precoding data redundancy is introduced; then the precoding is output to carry out an error correction code coding operation to generate corresponding error correcting code redundancy, so as to reduce power consumption of corresponding flash memory data writing; at last, the precoding is output and written into the flash memory chip together with the error correcting code redundancy. A flash memory chip reliability scope and a corresponding required error correcting code redundancy amount are given; when an estimated or detected flash memory chip reliability falls into the given flash memory chip reliability scope, a error correcting code redundancy amount can be obtained, so as to adjust error correcting code coding operation dynamically. Meanwhile, the required error correcting code redundancy amount is subtracted from a fixed redundancy storage space contained in a page itself, so as to obtain a precoding redundancy amount to adjust precoding operation dynamically. The power consumption of flash memory chip data writing operation is reduced effectively by utilizing a characteristic that the power consumption of flash memory chip data writing operation is directly related to the content of the written data.

Description

technical field [0001] The invention belongs to the technical field of memory and computer architecture, and in particular relates to a method for reducing the power consumption of flash chip data write operation. Background technique [0002] As the only mainstream solid-state non-volatile data storage technology, flash memory has become the fastest growing part of the global semiconductor industry system. According to a 2010 market research report, the market for flash memory products has exceeded US$20 billion. Solid-state storage systems that use flash memory as a storage medium can be 10 to 100 times faster than traditional hard disks. In addition to the advantages of speed, solid-state storage systems have significant advantages in terms of shock resistance, thermal power consumption, noise in use, and volume and weight due to the absence of a mechanical structure at all. A solid-state storage system mainly includes a solid-state storage system controller and multipl...

AI Technical Summary

Problems solved by technology

Since the flash memory chip uses a gradual "program-verify-reprogram" method to complete the data write operation, and each round of "program-verify" operation will cause a large number of bit line charging / discharging, so the data write operation of the flash memory chip It consumes a relatively large amount of energy, and the power consumption of the entire flash memory chip data storage system is basically determined by the power consumption of the data write operation. At present, there is no effective solution to reduce the power consumption of this operation.

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