Nonlinear stepped programming voltage
US6327183A · kind A · utility
39Cited by
34References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2000 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Jan 10, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/3468
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A voltage control circuit that narrows the distribution of threshold voltages of memory cells by using nonlinearly incremented programming voltages. To do so, the voltage control circuit applies to the memory cells a first program pulse of a first voltage, a second program pulse of a second voltage to the memory cell, and a third program pulse of a third voltage, where the difference between the third voltage and the second voltage is less than the difference between the second voltage and the first voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.