MEMORY MODULE AND MEMORY SYSTEM INCLUDING MEMORY MODULE

    公开(公告)号:US20190310784A1

    公开(公告)日:2019-10-10

    申请号:US16205357

    申请日:2018-11-30

    Abstract: A memory module includes a first type memory, a second type memory, a serial presence detect device and a controller. The serial presence detect device is configured to transfer capacity information of the second type memory to an external host device, during an initialization operation. The controller is configured to transfer a training command for the second type memory received from the external host device to the first type memory, during a training operation, which follows in time the initialization operation.

    Memory device skipping refresh operation and operation method thereof

    公开(公告)号:US11610624B2

    公开(公告)日:2023-03-21

    申请号:US17474666

    申请日:2021-09-14

    Abstract: Provided are a memory device skipping a refresh operation and an operating method thereof. The memory device includes a memory cell array including N rows; a refresh controller configured to control a refresh operation for the N rows of the memory cell array based on a refresh command; and an access information storage circuit including a plurality of registers configured to store flag information corresponding to each of the N rows, wherein a first value indicates rows that have been accessed, and a second value indicates rows that have not been accessed. The refresh controller is further configured to control whether the refresh operation is performed for a first row of the N rows at a refresh timing for the first row based on the flag information corresponding to the first row.

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