Memory controller, memory device, memory system and operation method thereof

Abstract

Memory controllers, memory devices, memory systems and operation methods are provided. A memory controller is to: find, in input data, a binary code to be replaced corresponding to a preset programming level to be replaced, the input data is to be written into a memory cell; and substitute the binary code to be replaced in the input data with a replacement binary code corresponding to a preset replacement programming level, and generate a replacement identifier linking a memory address corresponding to the replacement binary code. The quantity of states is reduced by modifying a data encoding mode of the memory controller to help shorten programming duration of the memory device and reduce disturbance.