Features

  • A Family of Nine Devices with User Memories from 1-Kbit to 256-Kbit
  • EEPROM User Memory
    • 4, 8, or 16 zones
    • Self-timed write cycles
    • Single-byte or multiple-byte page write modes
    • Programmable access rights for each zone
  • 2-Kbit Configuration Memory
    • 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
    • Encrypted checksum
    • Stream encryption
    • Four key sets for authentication and encryption
    • Eight sets of two 24-bit passwords
    • Anti-tearing function
    • Voltage and frequency monitor
  • Embedded Application Features
    • Low-voltage operation: 2.7V to 5.5V
    • Secure nonvolatile storage for sensitive system or user information
    • Two-Wire serial interface
    • 1 MHz compatibility for fast operation
    • Standard 8-lead plastic packages
    • Same pinout as Two-Wire serial EEPROMs
  • Smart Card Features
    • ISO 7816 Class A (5V) or Class B (3V) operation
    • Synchronous Two-Wire serial interface for faster device initialization*
    • ISO 7816-3 asynchronous T = 0 protocol*
    • Multiple zones, key sets and passwords for multi-application use
    • 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: 4,000V
Note: * Modules available with either Two-Wire or T = 0 modes.