Non-volatile memory device and system capable of executing operations asynchronously, and operation execution method of the same

    公开(公告)号:US10790026B2

    公开(公告)日:2020-09-29

    申请号:US16174839

    申请日:2018-10-30

    Abstract: A non-volatile memory device includes a non-volatile memory cell array, an input/output pad unit, and a peripheral circuit. The non-volatile memory device executes an operation requested by a controller. The input/output pad component provides a path through which a command and data related to the operation requested by the controller are input to the non-volatile memory device, and through which a result of execution of the requested operation is output to the controller. The peripheral circuit is configured to be loaded with a plurality of commands provided by the controller, to temporarily store program data provided by the controller to be written in the non-volatile memory cell array and data read from the non-volatile memory cell array, to adjust an execution order of the commands asynchronously with the controller based on an internal operation status of the non-volatile memory device, and to execute the commands in the adjusted execution order.

    Method of refreshing memory device and memory system based on storage capacity

    公开(公告)号:US10325643B2

    公开(公告)日:2019-06-18

    申请号:US15691828

    申请日:2017-08-31

    Abstract: A method of operating a memory device, a first setting signal is received by a first memory device among a plurality of memory devices. The first memory device has a first storage capacity, and the memory devices may be connected to one another by a single channel. A second setting signal is received by a second memory device among the plurality of memory devices. The second memory device has a second storage capacity different from the first storage capacity. N refresh operations are performed by the first memory device based on a first refresh command and the first setting signal during a first refresh period. M refresh operations are performed by the second memory device based on a second refresh command and the second setting signal during a second refresh period. A duration of the second refresh period is substantially the same as a duration of the first refresh period.

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