AT88SC25616C

Features:

• One of a Family of Devices with User Memories from 1-Kbit to 1-Mbit
• 256-Kbit (32-Kbyte) EEPROM User Memory
Sixteen 2-Kbyte (16-Kbit) Zones
Self-timed Write Cycle (5 ms)
Single Byte or 128-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)
Supports Protocol and Parameters Selection for Faster Operation
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


Application

The AT88SC25616C provides high security, low cost, and ease of implementation with- out 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 opera- tions. The AT88SC25616C offers the ability to communicate with virtually any smart card reader using the asynchronous T = 0 protocol (Gemplus Patent) defined in ISO 7816-3. Communication speeds up to 153,600 baud are supported by utilizing ISO 7816-3 Protocol and Parameter Selection.


Pinout




Description

The AT88SC25616C member of the CryptoMemory family is a high-performance secure memory providing 256 Kbits of user memory with advanced security and cryptographic features built in. The user memory is divided into 16 2-byte zones, each of which may be individually set with different security access rights or combined together to provide space for 1 to 4 data files.