An EEPROM having a memory cell array in which electrically programmable memory cells are arranged in a matrix and each of the memory cells has three storage states, includes a plurality of data circuits for temporarily storing data for controlling write operation states of the plurality of memory cells,...http://www.google.es/patents/USRE41019?utm_source=gb-gplus-sharePatente USRE41019 - Multi-state EEPROM having write-verify control circuit
Multi-state EEPROM having write-verify control circuit
