High speed 120 ns CMOS 256 K electrically erasable programmable ROM 32K x 8 BIT EEPROM High speed 150 ns CMOS 256 K electrically erasable programmable ROM 32K x 8 BIT EEPROM High speed 200 ns CMOS 256 K electrically erasable programmable ROM 32K x 8 BIT EEPROM High speed 250 ns CMOS 256 K electrically erasable programmable ROM 32K x 8 BIT EEPROM High speed CMOS. 256K electrically erasable programmable ROM. 32K x 8 bit EEPROM. Access time 250 ns. High speed CMOS. 256K electrically erasable programmable ROM. 32K x 8 bit EEPROM. Access time 120 ns. High speed CMOS. 256K electrically erasable programmable ROM. 32K x 8 bit EEPROM. Access time 150 ns. High speed CMOS. 256K electrically erasable programmable ROM. 32K x 8 bit EEPROM. Access time 200 ns.