Method and apparatus for generating read and verify operations in non-volatile memories
US7489556B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 2006 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Oct 1, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for generating a word-line voltage are disclosed. A word-line voltage generator includes a first current source, an adjustable current source, and a voltage converter, all operably coupled to a current sum node. The first current source generates a first current wherein a voltage derived from the first current at least partially comprises a cell location-dependent temperature coefficient varying with a location of a memory cell in a string of interconnected bit cells. The adjustable current source generates a second current that is substantially independent of a temperature change. The voltage converter is configured for generating a word-line signal having a word-line voltage proportional to the first current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.