High-performance secure memory that provides 1Kbit of user memory with advanced security and cryptographic features built-in. The user memory is divided into four 32-byte zones, each of which may be either individually set with different security access rights or effectively combined together to provide space for one to four data files. The device features an enhanced command set that allows direct communication with the microcontroller hardware two-wire interface. This enables faster firmware development with reduced code space requirements.
Feature
• One of a Family of 9 Devices with User Memories from 1 Kbit to 256-Kbit
• 1-Kbit (128-byte) EEPROM User Memory
- Four 32 byte (256 bit) 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
- 64-bit Mutual Authentication Protocol (Under License of 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
- 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
- Low Voltage Operation: 2.7V to 5.5V
- Secure Nonvolatile Storage for Sensitive System or User Information
- 2-wire Serial Interface
- 1.0 MHz Compatibility for Fast Operation
- Standard 8-lead Plastic Packages, Green Compliant (exceeds RoHS)
- Same Pinout as 2-wire Serial EEPROMs
• High Reliability
- Endurance: 100,000 Cycles
- Data Retention: 10 years
- ESD Protection: 4,000V min
