FLASH MEMORY DEVICE AND A DATA ERASE METHOD THEREOF, CAPABLE OF PERFORMING AN ERASE OPERATION AT EACH WORD LINE

摘要

PURPOSE: A flash memory device and a data erase method thereof are provided to erase the cell of only a biased word line by biasing a part of a word line to voltage level.;CONSTITUTION: A cell block(110) comprises a plurality of cell strings and a plurality of word lines. A plurality of cell strings comprises a plurality of cells which are connected in series. A plurality of word lines shares a gate of the cells comprising the cell string. A plurality of word line switches(130) switches and connects each word line of the cell block by a predetermined voltage level. A controller(150) receives a deletion command and a row address. The controller turns on/off the switch of each word line.;COPYRIGHT KIPO 2010