M93S46-W M93S56-W M93S66W 4 Kbit, 2 Kbit and 1 K.
M93S66 - 4Kbit / 2Kbit and 1Kbit 16-bit wide MICROWIRE Serial Access EEPROM with Block Protection
M93S66-125 - MICROWIRE serial EEPROM
M93S66-W - MICROWIRE bus EEPROM
