Memory device, refresh control circuit to be used for the memory device, and refresh method

摘要

A memory space of a memory cell array is divided into a plurality of submemory spaces. A refresh control circuit executes a control of performing refreshment of information to the submemory spaces that are in use at the time of the refreshment of the information and need the refreshment among the plurality of submemory spaces and executes a control of not performing the refreshment to the submemory spaces that are not in use and do not need the refreshment.