** Description **

The AT88SC0404CA member of the CryptoMemory® family is a high-performance secure memory providing 4 Kbit 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. The AT88SC0404CA features an enhanced command set that allows direct communi cation 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
• 4-Kbit (512-byte) EEPROM User Memory
– Four 1-Kbit (1-Kbit128-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