Method for detaching sectors in a flash EEPROM memory array
US5357475A · kind A · utility
179Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1992 |
| Grant date | Oct 18, 1994 |
| Priority date | — |
| Expiry date | Oct 30, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99957
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A process for releasing sectors of a flash EEPROM memory array which includes a plurality of individually erasable blocks and stores sectors of data in such blocks with a header providing a logical sector number, an indication of validity of data stored, and an indication of whether data is stored with the header. The process includes the steps of finding the header of a sector with data to be released, setting the indication of validity of the data stored to indicate that the data is invalid, and writing a new header for the sector to a new position in the array without data and with an indication that data is not attached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.