Invention Application
- Patent Title: SEMICONDUCTOR MEMORY DEVICE THAT PERFORMS A REFRESH OPERATION
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Application No.: US15678436Application Date: 2017-08-16
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Publication No.: US20170345484A1Publication Date: 2017-11-30
- Inventor: SUYEON DOO , Taeyoung Oh , Namjong Kim , Chulsung Park
- Applicant: SAMSUNG ELECTRONICS CO., LTD.
- Priority: KR10-2014-0151319 20141103
- Main IPC: G11C11/406
- IPC: 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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