公开(公告)号：US20200066330A1

公开(公告)日：2020-02-27

申请号：US16599980

申请日：2019-10-11

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Xing Hu ,  Chuanzeng Liang ,  Shihai Xiao ,  Kanwen Wang

IPC: G11C11/406

Abstract: A memory refresh method is applied to a computer system including a memory controller and a dynamic random access memory (DRAM). The memory controller receives access requests including access requests for accessing a first rank of multiple ranks in the DRAM. When a quantity of the access requests for accessing the first rank is greater than 0 and less than a second threshold, the memory controller refreshes the first rank. The first rank may be refreshed in time even if the first rank cannot be in an idle state.