AT88SC0404C单片机解密

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　　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 combined together to providespace for 1 to 4 data files.

    AT88SC0404C Features：

　　. One of a Family of Devices with User Memories from 1 Kbit to 1 Mbit

　　. 4-Kbit (512-byte) EEPROM User Memory

　　– Four 128-byte (1-Kbit) Zones

　　– Self-timed Write Cycle (5 ms)

　　– 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 Patented Dynamic Symetric Mutual Authentication Protocol (Under

　　Exclusive Patent License from 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

　　– 1.5 MHz Compatibility for Fast Operation

　　– Standard 8-lead Plastic Packages

　　– Same Pinout as 2-wire Serial EEPROMs

　　. High Reliability

　　– Endurance: 100,000 Cycles

　　– Data Retention: 10 years

　　– ESD Protection: 4,000V min