Features

  • One of a Family of Devices with User Memories from 1-Kbit to 8-Kbit
  • EEPROM User Memory
    • Four or eight zones
    • Self-timed write cycles
    • Single-byte or multiple-byte page write modes
    • Programmable access rights for each zone
  • 2-Kbit Configuration Zone
    • 37-byte OTP area for user-defined codes
    • 160-byte area for user-defined keys and passwords
  • High-Security Features
    • 64-bit mutual authentication protocol
    • Cryptographic message authentication codes (MACs)
    • Stream encryption
    • Four key sets for authentication and encryption
    • Eight sets of two 24-bit passwords
    • Anti-tearing function
    • Voltage and frequency monitoring
  • Embedded Application Features
    • Low-voltage supply: 2.7V to 3.6V
    • Secure nonvolatile storage for sensitive system or user information
    • Two-Wire serial interface (TWI, 5V compatible)
    • 1 MHz compatibility for fast operation
    • Standard 8-lead plastic packages, green compliant (exceeds RoHS)
    • Same pinout as Two-Wire serial EEPROMs
  • Smart Card Features
    • ISO 7816 Class B (3V) operation
    • ISO 7816-3 asynchronous T = 0 protocol
    • Multiple zones, key sets and passwords for multi-application use
    • Synchronous Two-Wire serial interface for faster device initialization
    • Programmable 8-byte Answer-to-Reset (ATR) register
    • ISO 7816-2 compliant modules
  • High Reliability
    • Endurance: 100,000 Cycles
    • Data Retention: 10 Years
    • ESD Protection: 2,000V