The main features of the SLE4428 are:
– Synchronous communication protocol, ISO 7816 compatible
– EEPROM size is 1,024 bytes split into the following areas:

• 25 bytes for card manufacturer data
• 2 bytes for card issuer reference
• 4 bytes for card identification data
• 990 bytes for main user data
• 3 bytes for error counter and card secret code area