ST31P320 Datasheet PDF - STMicroelectronics

Description
   Designed for secure ID and banking applications, the ST31P320 and ST31P450 devices are serial access microcontrollers that incorporate the most recent generation of Arm® processors for embedded secure systems. Their SecurCore® SC000™ 32-bit RISC core is built on the Cortex® M0 core with additional security features to help to protect against advanced forms of attacks.

FEATUREs
Hardware features
• Arm® SecurCore® SC000™ 32-bit RISC core cadenced at up to 55 MHz
• 10 Kbytes of User RAM
• Up to 450 Kbytes of secure User high-density Flash memory including 512 bytes
   of User OTP area:
   – 25-year data retention
   – 500 000 Erase/Write cycle endurance
   – Page Erase time: 0.8 ms
   – Programming performance up to 2 µs/byte in chained mode
   – Flash Erase/Write protection programmable on 32-Kbyte sectors
• Operating temperature: –25 °C to +85 °C
• Three 16-bit timers with interrupt
• Watchdog timer
• 2.7 V to 5.5 V supply voltages
• External clock frequency up to 10 MHz
• Power-saving Standby state
• Contact assignment compatible with ISO/IEC 7816-3 standards
• ESD protection (HBM): 6 kV HBM for ISO pads and 4 kV for AC0/AC1
   contactless pads
• Asynchronous receiver transmitter (IART) with RAM buffer for high speed serial
   data support (ISO/IEC 78163 T=0/T=1 and EMV compliant)

Contactless features
• Complies with ISO/IEC 14443 Type A and EMVCo™
• 68 pF tuning capacitor
• Automatic CPU frequency adaptation for optimum power consumption
• 13.56 MHz carrier frequency
• RFUART (RF universal asynchronous receiver transmitter) up to 848 kbps
• 1-Kbyte RF frame buffer in dedicated RFUART RAM
• MIFARE Classic®, MIFARE Plus® and MIFARE® DESFire® EV2 hardware and
   software implementation

Security features
• Active shield
• Monitoring of environmental parameters
• Three-key Triple DES accelerator
• AES accelerator
• AIS-31 Class PTG.2 compliant true random number generator (TRNG)
• NESCRYPT coprocessor for public key cryptography algorithm
• ISO/IEC 13239 CRC calculation block
• Unique serial number on each die
• Highly efficient protection against fault attacks