Flash memory card with a ready/busy mask register
US5375222A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1992 |
| Grant date | Dec 20, 1994 |
| Priority date | — |
| Expiry date | Mar 31, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/102
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A flash memory card is described which has a ready/busy mask register. First and second flash memories of the flash memory card have respective first and second outputs indicating ready or busy status for the first and second memories. The ready/busy mask register contains mask data. Logic circuitry performs (1) a first logical operation between a first output and a first mask datum to produce a first masked output, (2) a second logical operation between a second output and a second mask datum to produce a second masked output, and (3) a third logical operation between the first masked output and the second masked output to produce a flash memory card ready/busy output. The flash memory card has circuitry for providing a ready output signal that indicates a first (in time) transition from a busy mode to a ready mode by either the first flash memory or the second flash memory of the flash memory card.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.