Description
The AT88SC25616C member of the CryptoMemory® family is a high-performance secure memory providing 256 Kbits of user memory with advanced security and cryptographic features built in. The user memory is divided into 16 2-Kbyte zones, each of which may be individually set with different security access rights or effectively combined together to provide space for 1 to 16 data files.

FEATUREs
• One of a Family of 9 Devices with User Memories from 1-Kbit to 256-Kbit
• 256-Kbit (32-Kbyte) EEPROM User Memory
    ⎯ Sixteen 2-Kbyte (16-Kbit) Zones
    ⎯ Self-timed Write Cycle
    ⎯ 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 Mutual Authentication Protocol (Under License of 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 (Gemplus® Patent) *
    ⎯ 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
    ⎯ 1.0 MHz Compatibility for Fast Operation
    ⎯ Standard 8-lead Plastic Packages, Green Compliant (exceeds RoHS)
    ⎯ Same Pinout as 2-wire Serial EEPROMs
• High Reliability
    ⎯ Endurance: 100,000 Cycles
    ⎯ Data Retention: 10 years
    ⎯ ESD Protection: 4,000V min