EM4325 is a UHF RFID ASIC that is compliant with ISO/IEC 18000-6 Type C and Type D (TOTAL) as well as EPCTM Class-3 Generation-2 (Gen2). TOTAL is a protocol used for many applications and is an enhanced version of the defacto standard used in apparel item level tagging.EM4325 can be red/write in EEPROM thought RFID (UHF) or SPI protocol, but not at the same time.