Dram CAM cell with hidden refresh
US6430073B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2000 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Dec 6, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C15/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A Dynamic Content Addressable Memory (DCAM) cell topology that contains fewer that can perform a “hidden” refresh of stored data that does not delay nor interrupt the CAM search cycle, thereby providing SCAM-like performance. A non-destructive read operation, is performed such that the stored-data does not have to be written back because of a refresh-read operation. A reliable CAM search can be performed after a read operation and before or even while the refresh-data is being written back. Soft-error detection processes can be performed on each CAM entry during the pendency of the refresh cycle. The DCAM cell can be used in a digital system such as a digital computer and a Network Router.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.