Data management method of flash memory

Abstract

A data managing method of a flash memory is provided, which comprises a data transmitted by a host computer as a first transmission and a write address of the data as the address of a temporary block; executing a write instruction after reading the data of the temporary block to an external buffer and writing the data of the temporary block with an address of objective block in the buffer of the flash memory. When the data in the buffer of the flash memory does not occupy the buffer, writing the data in the temporary block; the method to write the temporary block comprises using readdressing instructions or executing a write instruction, and then rewriting the data of the external buffer in the buffer of the flash memory to write the data in the temporary block.

Description

technical field [0001] The present invention relates to a kind of data management of memory, and especially relates to using a data writing method to manage the data of flash memory. Background technique [0002] Flash memory is a storage system with advantages of high access speed and high stability. Flash memory is a non-volatile memory, that is, once data is stored in flash memory, it does not require power to save the data. [0003] The data access architecture of flash memory is based on blocks, and each block is further divided into pages or sections. When data needs to be written into the flash memory, a data write command needs to be executed to write the data in the external buffer into the buffer of the flash memory, and then write from the buffer of the flash memory into the flash memory. Under the condition that the NOP (number of program, that is, the block of flash memory can only be accessed once) is one, the data in the page can only be written once. In app...

AI Technical Summary

Problems solved by technology

Under the condition that the NOP (number of program, that is, the block of flash memory can only be accessed once) is one, the data in the page can only be written once. In application, it is easy to cause the data to not occupy the block of flash memory or store data discontinuous disadvantage

If the data does not fill up the blocks of the flash memory or the data storage is discontinuous, the storage performance of the flash memory will be reduced

Data defragmentation can solve this problem, but it takes a lot of time to reorganize the data in the flash memory

Among them, after assigning a destination block address to the data in the external buffer, if you want to change the destination block address of the data, under the limitation of the current flash memory architecture, the data in the buffer memory of the flash memory cannot be changed to its written address , or read data out of the flash buffer outside the

Also, this architecture would be less conducive to accelerating data refresh

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