Memory Device performing care operation for disturbed row and Operating Method thereof

摘要

Disclosed are a memory device for managing disturb rows and a method of operating the same. A memory device according to an aspect of the inventive concept includes a memory cell array including a plurality of rows, a refresh controller configured to refresh the plurality of rows, and a first cycle and a second cycle having different cycles. For a period, a care operation for a first adjacent region closest to a first row is controlled based on the number of accesses of the rows during the first period, and based on the number of accesses of the rows during the second period and a control logic for controlling a care operation for a second adjacent region second adjacent to the second row.