A system of Flash EEprom memory chips with controlling circuits serves as non-volatile memory such as that provided by magnetic disk drives. Improvements include selective multiple sector erase, in which any combinations of Flash sectors may be erased together. Selective sectors among the selected combination...http://www.google.fr/patents/US5877986?utm_source=gb-gplus-shareBrevet US5877986 - Multi-state Flash EEprom system on a card that includes defective cell substitution
Multi-state Flash EEprom system on a card that includes defective cell ...