Abstract: A memory controller may control a memory device including a plurality of memory blocks each including a plurality of pages. The memory controller may include a scan voltage controller configured to control the memory device to apply a plurality of scan voltages to any one page of the plurality of pages, a counter configured to obtain, based on sensed data obtained by reading the any one page using the plurality of scan voltages, the number of memory cells having a threshold voltage included in at least one voltage range defined by the plurality of scan voltages from among a plurality of memory cells included in the any one page, and a data manager configured to control the memory device to store data stored in a memory block including the any one page in another memory block, based on the number of memory cells.

Abstract: A memory controller may control a memory device including a plurality of memory blocks each including a plurality of pages. The memory controller may include a scan voltage controller configured to control the memory device to apply a plurality of scan voltages to any one page of the plurality of pages, a counter configured to obtain, based on sensed data obtained by reading the any one page using the plurality of scan voltages, the number of memory cells having a threshold voltage included in at least one voltage range defined by the plurality of scan voltages from among a plurality of memory cells included in the any one page, and a data manager configured to control the memory device to store data stored in a memory block including the any one page in another memory block, based on the number of memory cells.