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下面是有关AT88SC0404C芯片的主要功能特征介绍，供客户及技术工程师在芯片解密项目及技术实现过程中进行技术参考和借鉴。
The AT88SC0404C provides high security, low cost, and ease of implementation without the need for a microprocessor operating system. The embedded cryptographic engine provides for dynamic, symmetric-mutual authentication between the device and host, as well as performing stream encryption for all data and passwords exchanged between the device and host. Up to four unique key sets may be used for these operations.
The AT88SC0404C offers the ability to communicate with virtually any smart card reader using the asynchronous T = 0 protocol (Gemplus Patent) defined in ISO 7816-3.
AT88SC0404C单片机 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
