SEMICONDUCTOR MEMORY DEVICE THAT PERFORMS A REFRESH OPERATION

    公开(公告)号:US20170345484A1

    公开(公告)日:2017-11-30

    申请号:US15678436

    申请日:2017-08-16

    CPC classification number: G11C11/40626 G11C11/406

    Abstract: A semiconductor memory device includes a memory circuit including a plurality of memory cells and a refresh control circuit. The refresh control circuit is configured to determine a number of times to perform a target row refresh (TRR) in response to a mode register set (MRS) code signal, wherein the MRS code signal is generated in response to a temperature change, and the refresh control circuit is configured to maintain a refresh cycle of at least two of the memory cells for a period of time when the refresh cycle is changed due to the temperature change.

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