Systems and methods for refreshing non-volatile memory
US6751127B1 · kind B1 · utility
13Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2002 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Apr 24, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/3431
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention is related to methods and systems for refreshing non-volatile memories. A rewrite operation is performed followed by a refresh operation. The refresh operation is performed within a fixed time beginning at the byte cells associated with the selected bit line and proceeding to sequentially refersh cells associated with other bit lines. Cell currents are measured, and if a cell current meets a first criteria, the corresponding cell is refreshed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.