Method and apparatus for generating temperature-compensated read and verify operations in flash memories
US7277355B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2005 |
| Grant date | Oct 2, 2007 |
| Priority date | — |
| Expiry date | Aug 30, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and an apparatuses for generating a word-line voltage are disclosed. A word-line voltage generator includes a first current source, an adjustable current source, adjustable current sink, and a voltage converter, all operably coupled to a current sum node. The first current source generates a first current having a temperature coefficient substantially equal to a temperature coefficient of at least one bit cell. The adjustable current source generates a second current that is substantially independent of a temperature change. The adjustable current sink sinks a third 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 a reference current, wherein the reference current comprises the first current, plus the second current, and minus the third current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.