EM卡具有32位的密码读/写保护、32位唯一的ID码和10位用户码。EM卡的EEPROM存储空间有512位，被分为16个扇区，每个扇区32位，其中的锁定位可以将EEPROM的数据块变成只读模式。EM4469可以较低的功耗提供多种数据传输率和编码方式，而且其内部集成的谐振电容可掩膜选择，不需要外部电容。另外，它还有片内整流器和限压器，可以在-40℃~85℃温度下工作(EM card has 32 bit password read / write protection, 32 bit unique ID code and 10 bit user code. The EM card has 512 bits of EEPROM storage space and is divided into 16 sectors, each of which is 32 bits, where the lock position can turn the EEPROM data block into read-only mode. EM4469 can provide a wide range of data transmission rates and coding modes at lower power consumption, and its integrated resonant capacitor can mask selection without the need for external capacitance. In addition, it has an on-chip rectifier and a voltage limiter that can operate at -40 degrees ~85 degrees Celsius)