Refresh management for memory
US11694739B2 · kind B2 · utility
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1References
20Claims
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Key dates
| Filing date | Dec 29, 2021 |
| Grant date | Jul 4, 2023 |
| Priority date | — |
| Expiry date | Dec 29, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/40618
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A memory controller interfaces with a random access memory over a memory channel. A refresh control circuit monitors an activate counter which counts a rolling number of activate commands sent over the memory channel to a memory region of the memory. In response to the activate counter being above an intermediate management threshold value, the refresh control circuit only issue a refresh management (RFM) command if there is no REF command currently held at the refresh command circuit for the memory region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.