نظرة عامة على المنتج
The ATSHA204A-STUCZ-T is a SHA-256 CryptoAuthentication chip from Microchip Technology (formerly Atmel). It provides hardware-based cryptographic authentication with up to 16 keys of 256-bit length, a guaranteed unique 72-bit serial number, and 4.5Kb EEPROM. The device uses a single-wire interface and comes in a SOT-23-3 package with full metal shielding for physical attack resistance.
المواصفات الرئيسية
- Algorithm: SHA-256
- Key Storage: 16 keys, 256-bit each
- Unique ID: 72-bit guaranteed unique serial number
- Memory: 4.5Kb EEPROM (16 slots x 32 bytes) + 512-bit OTP
- Interface: Single-wire (UART compatible) / I2C (1MHz)
- Supply Voltage: 2.0V ~ 5.5V
- Communication Voltage: 1.8V ~ 5.5V
- Sleep Current: <150nA
- Active Current: 2mA
- Data Retention: 50 years
- Package: SOT-23-3
- Operating Temperature: -40°C ~ +85°C
- Security: Full metal shield, tamper detection, no JTAG
الميزات
- SHA-256 challenge-response authentication
- Guaranteed unique 72-bit serial number
- Internal high-quality random number generator
- Full metal shield over die for tamper resistance
- Single-wire or I2C interface options
- Lockable configuration and data zones
- 4.5Kb EEPROM with 50-year data retention
- Ultra-low sleep current (<150nA)
التطبيقات
- Anti-counterfeiting and clone protection
- Secure boot and firmware validation
- Accessory and consumable authentication
- Network access control
- Encrypted communication key storage
- IoT device identity verification