Method for programming of a semiconductor memory cell
US6292394A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2000 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Jun 29, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/3459
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for programming an array having a multiplicity of memory cells. The method includes, per cell to be programmed, verifying a programmed or non-programmed state of the cell and flagging those of the cells that verify as non-programmed during one of the verify steps after having previously verified as programmed. A programming pulse having a programming level is applied to the non-programmed cells which are not flagged cells. The steps of verifying, flagging and applying are then repeated until all of the cells verify as programmed at least once. Subsequently, a boost pulse having a boost programming level lower than the programming level is applied to the flagged cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.