Method and circuitry for usage of partially functional nonvolatile memory
US5822256A · kind A · utility
165Cited by
16References
52Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1997 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Mar 5, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2211/5641
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and circuitry are described that permit one to utilize a partially functional integrated circuit memory. A memory array is segregated into separate blocks that can each be isolated to minimize the amount of the memory array rendered unusable by a defect. Circuitry is also provided to program memory cells within the array to one of at least three amounts of charge and thereby increase the amount of storage provided by the remaining functional blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.