Description
The AT88SC0104CA member of the CryptoMemory® family is a high-performance secure memory providing 1 Kbit of user memory with advanced security and cryptographic features built in. The user memory is divided into four 32-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. The AT88SC0104CA features an enhanced command set that allows direct communication with microcontroller hardware 2-Wire interface thereby allowing for faster firmware development with reduced code space requirements.

Features
• One of a Family of Devices with User Memories from 1-Kbit to 8-Kbits
• 1-Kbit (128-byte) EEPROM User Memory
   ⎯ Four 256-bit (32-byte) 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)
   ⎯ Cryptographic Message Authentication Codes (MAC)
   ⎯ Stream Encryption
   ⎯ Four Key Sets for Authentication and Encryption
   ⎯ Eight Sets of Two 24-bit Passwords
   ⎯ Anti-Tearing Function
   ⎯ Voltage and Frequency Monitors
• Smart Card Features
   ⎯ ISO 7816 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 Supply: 2.7V – 3.6V
   ⎯ Secure Nonvolatile Storage for Sensitive System or User Information
   ⎯ 2-wire Serial Interface (TWI, 5V Compatible)
   ⎯ 1.0 MHz Compatibility for Fast Operation
   ⎯ Standard 8-lead Plastic Packages, Green compliant (exceeds RoHS)
   ⎯ Same Pin Configuration as AT24CXXX Serial EEPROM in SOIC and PDIP Packages
• High Reliability
   ⎯ Endurance: 100,000 Cycles
   ⎯ Data Retention: 10 years
   ⎯ ESD Protection: 2,000V min