FLASH MEMORY DEVICE AND A ERASING METHOD THEREOF, CAPABLE OF PREVENTING DISSEMINATION DETERIORATION IN AN ERASE OPERATION BY SELECTIVELY APPLYING A VOLTAGE ACCORDING TO THE PROGRAM STATE OF A PAGE

摘要

PURPOSE: A flash memory device and an erasing method thereof are provided to improve the reliability of a flash memory device by preventing data errors by preventing dissemination deterioration.;CONSTITUTION: A flash memory device selects a page which is not programmed according to an erase operation(411). The flash memory device confirms a page which is not programmed in order to apply a voltage to a word line(413). The flash memory device determines the state of the voltage in the page which is not programmed(415). The flash memory device determines the state of a ground voltage in the programmed page(417). The flash memory device confirms the determination of the voltage applied to all pages(419).;COPYRIGHT KIPO 2010