Semiconductor memory device and access method and memory control system for same
US7193923B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2005 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Aug 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0246
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor memory device using inexpensive block access semiconductor memories for storage media and able to be treated like a usual randomly accessible system memory, including a first semiconductor memory and a second semiconductor memory, wherein the second semiconductor memory is a cache of the first semiconductor memory, the first semiconductor memory is accessed via the second semiconductor memory, there are a first address region and a second address region on logical memory addresses accessed from the outside, at least part of the second semiconductor memory is mapped to the first address region, and a function of controlling data transfer between the first semiconductor memory and the second semiconductor memory by accessing the second address region is provided, and an access method and a memory control system of the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.