- Patent Title: Row hammer monitoring based on stored row hammer threshold value
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Application No.: US15170606Application Date: 2016-06-01
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Publication No.: US09721643B2Publication Date: 2017-08-01
- Inventor: Kuljit S Bains , John B Halbert
- Applicant: Intel Corporation
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Compass IP Law PC
- Main IPC: G06F12/12
- IPC: G06F12/12 ; G11C11/4078 ; G06F13/16 ; G11C11/406 ; G11C11/408 ; G11C29/50 ; G11C29/04

Abstract:
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.
Public/Granted literature
- US20160276015A1 ROW HAMMER MONITORING BASED ON STORED ROW HAMMER THRESHOLD VALUE Public/Granted day:2016-09-22
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