Description

The AT88SC0204CA member of the CryptoMemory® family is a high-performance secure memory providing 2 Kbit of user memory with advanced security and cryptographic features built in. The user memory is divided into four 64-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 AT88SC0204CA 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

• 2-Kbit (256-byte) EEPROM User Memory

– Four 512-bit (64-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