- 专利标题: Row hammer monitoring based on stored row hammer threshold value
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申请号: US15633604申请日: 2017-06-26
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公开(公告)号: US10083737B2公开(公告)日: 2018-09-25
- 发明人: Kuljit S. Bains , John B. Halbert
- 申请人: Intel Corporation
- 申请人地址: US CA Santa Clara
- 专利权人: Intel Corporation
- 当前专利权人: Intel Corporation
- 当前专利权人地址: US CA Santa Clara
- 代理机构: Compass IP Law PC
- 主分类号: G11C11/4078
- IPC分类号: G11C11/4078 ; G06F13/16 ; G11C11/406 ; G11C11/408 ; G11C29/50 ; G11C29/04
摘要:
Detection logic of a memory subsystem obtains a threshold for a memory device that indicates a number of accesses within a time window that causes risk of data corruption on a physically adjacent row. The detection logic obtains the threshold from a register that stores configuration information for the memory device, and can be a register on the memory device itself and/or can be an entry of a configuration storage device of a memory module to which the memory device belongs. The detection logic determines whether a number of accesses to a row of the memory device exceeds the threshold. In response to detecting the number of accesses exceeds the threshold, the detection logic can generate a trigger to cause the memory device to perform a refresh targeted to a physically adjacent victim row.
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