FM24NC128Tx is a 128Kbit dual interface EEPROM with flexible tag function. The 128kbit data memory and thededicated tag memory can be accessed by both two wire serial interface and ISO/IEC 14443A compatible RFinterface. When accessed by RF interface, the device is fully compatible with NFC Forum Type 2 tag. The device can also access tag memory through the conventional address by two wire serial interface. This feature ensures a flexible NFC tag application.