Memory replacement mechanism in semiconductor device
US7502901B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2003 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Oct 17, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor device has a processor, a first memory unit accessed by the processor, a plurality of page memory units obtained by partitioning a second memory unit which is accessible by the processor at a speed higher than the speed at which the first memory unit is accessible such that each of the page memory units has a storage capacity larger than the memory capacity of a line composing a cache memory, a tag adding, to each of the page memory units, tag information indicative of an address value in the first memory unit and priority information indicative of a replacement priority, a tag comparator for comparing, upon receipt of an access request from the processor, the address value in the first memory unit with the tag information held by the tag, and a replacement control unit for replacing the respective contents of the page memory units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.