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AT88SC25616C Datasheet
CryptoMemory® 256 Kbit
Datasheet : 

  • One of a Family of Devices with User Memories from 1-Kbit to 1-Mbit
  • 256-Kbit (32-Kbyte) EEPROM User Memory
    • Sixteen 2-Kbyte (16-Kbit) Zones
    • Self-timed Write Cycle (5 ms)
    • Single Byte or 128-byte Page Write Mode
    • 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 Patented Dynamic Symetric Mutual Authentication Protocol (under exclusive patent license from ELVA)
    • 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
  • Smart Card Features
    • ISO 7816 Class A (5V) or Class B (3V) Operation
    • ISO 7816-3 Asynchronous T = 0 Protocol
    • Supports Protocol and Parameters Selection for Faster Operation
    • Multiple Zones, Key Sets and Passwords for Multi-application Use
    • Synchronous 2-wire Serial Interface for Faster Device Initialization
    • Programmable 8-byte Answer-To-Reset Register
    • ISO 7816-2 Compliant Modules
  • Embedded Application Features
    • Low Voltage Operation: 2.7V to 5.5V
    • Secure Nonvolatile Storage for Sensitive System or User Information
    • 2-wire Serial Interface
    • 1.5 MHz Compatibility for Fast Operation
    • Standard 8-lead Plastic Packages
    • Same Pinout as 2-wire Serial EEPROMs
  • High Reliability
    • Endurance: 100,000 Cycles
    • Data Retention: 10 years
    • ESD Protection: 4,000V min