MEMORY SYSTEM, MEMORY CONTROLLER AND REFRESH OPERATION CONTROL METHOD OF MEMORY CONTROLLER

摘要

To provide a memory system, a memory controller and a refresh operation control method of the memory controller capable of preventing a degradation of the performance of the refresh operation for one memory caused by the influence of the heat released by the other memories which differ from the one memory from amongst the plurality of memories. A memory controller (10) that is connected to a1 plurality of memories (20 and 30) including the memory (20) requiring a refresh operation in a predetermined cycle is provided with an operation cycle setting section for setting a refresh operation cycle of the memory (20) to a different cycle between before accessing to the memory (30) which differs from the memory (20) requiring the refresh operation and after accessing thereto.