Description
The AT88SC0404C member of the CryptoMemory® family is a high-performance secure memory providing 4 Kbits of user memory with advanced security and cryptographic features built in. The user memory is divided into four 128-byte zones, each of which may be individually set with different security access rights or effectively combined together to provide space for 1 to 4 data files.

FEATUREs
• One of a Family of 9 Devices with User Memories from 1 Kbit to 256-Kbit
• 4-Kbit (512-byte) EEPROM User Memory
    - Four 128-byte (1-Kbit) Zones
    - Self-timed Write Cycle
    - Single Byte or 16-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) *
    - 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