Memory systems and methods of operating thereof, memory controllers and readable storage media

Abstract

An example memory controller and readable storage medium are disclosed. An example memory system includes: a non-volatile memory device and a memory controller coupled to the non-volatile memory device; the memory controller is configured to: determine whether data for the logical block address mapping of a received read command belongs to tables of a first class or tables of a second class, and confirm the heat of the data corresponding to the logical block address of the received read command; determine a level of the amount of drift of a threshold voltage of a memory cell corresponding to the logical block address, according to the heat of the data corresponding to the logical block address of the received read command; determine different read voltages that are correspondingly sent to the memory cell corresponding to the logical block address, according to different levels of the amount of drift.