Device for the verification of memory cells on the basis of the threshold drop obtainable during writing
US4802166A · kind A · utility
15Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1986 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Feb 28, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A comparator has two inputs, one controlled by a circuit branch including a written cell being examined and one controlled by another circuit branch including a virgin cell. In parallel with the latter is placed another reference cell controlled in an adjustable manner in such a way as to raise the threshold of the written cell which the device is able to discriminate and accept.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.