WEBCAT24C02, CAT24C04, CAT24C08, CAT24C16. Description. The CAT24C02/04/08/16 are 2−Kb, 4−Kb, 8−Kb and 16−Kb respectively I2C Serial EEPROM devices organized internally as 16/32/64 and 128 pages respectively of 16 bytes each. All devices support both the Standard (100 kHz) as well as Fast (400 kHz) I2C protocol.