Row hammer condition monitoring
US8938573B2 · kind B2 · utility
84Cited by
1References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 30, 2012 |
| Grant date | Jan 20, 2015 |
| Priority date | — |
| Expiry date | Aug 15, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/88
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system monitors data accesses to specific rows of memory to determine if a row hammer condition exists. The system can monitor accessed rows of memory to determine if the number of accesses to any of the rows exceeds a threshold associated with risk of data corruption on a row of memory physically adjacent to the row with high access. Based on the monitoring, a memory controller can determine if the number of accesses to a row exceeds the threshold, and indicate address information for the row whose access count reaches the threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.