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 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

• 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