Circuit and method for erasing EEPROM memory arrays to prevent over-erased cells

作者: Giovanni Santin

DOI:

关键词: EEPROMProcess (computing)Electric fieldMaterials scienceReading (computer)VoltageElectrical engineeringBiasingFlash (photography)Energy (signal processing)

摘要: The device and process of this invention provide for eliminating reading errors caused by over-erased cells applying flash erasing pulses, then programming pulses to the an EEPROM array. are sufficient in strength over-erase cells. applied control gates have same voltages as those used program individual electric field adjacent floating is controlled a biasing voltage one source/drain regions controls energy level such that only enough charge transferred cause threshold positive values less than predetermined wordline select voltage.