Patent ID: 6330688
Filing Date: 2001-12-11
Classification: G06F,G11C

Abstract:
Error correction apparatus for a flash EEPROM array comprisinga block of flash EEPROM devices joined in row and column array circuits by which the flash EEPROM devices may be accessed,said block including an access circuit for accessing the redundant flash EEPROM devices during production of the flash EEPROM array and operation of the EEPROM array;means for sensing when a hardware error has occurred in a block of the flash EEPROM array during the operation of the array, anda circuit for replacing an array circuit having an error during the operation of the array and during production of the array by a redundant circuit, accessible by the access circuit in response to detection of a hardware error or a manufacturing error, respectively, with a circuit by which redundant flash EEPROM devices may be accessed.