Catalyst 24WC128 serial EEPROM documentation in a 55.9 KB PDF, indexed as a schematic though functionally a datasheet for a 128 Kbit two-wire memory.

Named for the Catalyst Semiconductor 24WC129, this 74.3 KB PDF is catalogued as a schematic but serves as the part datasheet for a 128 Kbit class I2C serial EEPROM.