Semiconductor memory device and restoration method therefor
US6400602B2 · kind B2 · utility
12Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2001 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Mar 26, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/883
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor memory device includes: a plurality of memory cell regions, each comprising at least one memory cell; a non-volatile memory section which accepts external writing; and unselecting means for designating at least one of the plurality of memory cell regions to be inaccessible based on data written to the non-volatile memory section. At least one operation type is performed for at least one accessible memory cell region, which is not designated to be inaccessible, among the plurality of memory cell regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.