CONTROLLER FLASH MEMORY DEVICE METHOD FOR IDENTIFYING DATA BLOCK STABILITY AND METHOD FOR STORING DATA ON FLASH MEMORY DEVICE

摘要

A controller (11) comprising: a processor (118) a cache (120) and a communication interface (128). The processor (118) is configured to read a first data block information from the cache (120); a stability level of the first data block is determined according to a reference count of the first data block a time duration of the first data block stored on the flash memory device (22) the reference count of the data block a corresponding relationship between the stability level and the time duration of the data block stored on the flash memory device (22) and the stability level being used for indicating the stability of the data block; a logical address and the stability level of the first data block are transmitted to the flash memory device (22) via the communication interface (128) such that the flash memory device (22) centrally stores the data block having the same stability level.