Apparatus for controlling access to a memory device and memory system comprising the same
US11935623B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2022 |
| Grant date | Mar 19, 2024 |
| Priority date | — |
| Expiry date | Nov 30, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/4078
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for controlling access to a memory device comprising rows of memory units is provided. The apparatus comprises: an operation monitor configured to track memory operations to the rows of memory units of the memory device; a row hammer counter configured to determining, for each of the rows of memory units, row hammer effects experienced by the row of memory units due to the memory operations to the other rows of memory units of the memory device; a mitigation module configured to initiate, for each of the rows of memory units, row hammer mitigation in case that accumulated row hammer effects experienced by the row of memory units reach a predetermined threshold; and a virtual host module configured to perform the row hammer mitigation targeting a row of memory units in response to the initiation of row hammer mitigation for the row of memory units by the mitigation module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.