Conditional row activation and access during refresh for memory devices and associated methods and systems
US11468939B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2020 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Nov 30, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/4085
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Memory devices, systems including memory devices, and methods of operating memory devices are described, in which memory devices are configured to conditionally activate certain rows during refresh operations such that the memory devices can execute operations directed to the activated rows concurrently with the refresh operations. In some embodiments, the memory device receives an activate (ACT) command directed to a section of a memory bank while performing refresh operations for the memory bank. The memory device may carry out the ACT command if certain conditions are satisfied not to corrupt the data being refreshed. Subsequently, the memory device generates a signal to indicate the ACT command has been accepted to activate a row identified by the ACT command. Further, the memory device can perform subsequent access commands directed to the row, in parallel with the refresh operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.