ST31G480/ST31G384/ ST31G320 /ST31G256 

       Secure dual interface microcontroller with enhanced security and up to 480 Kbytes of Flash memory

Features 

Hardware features 

x ARM SecurCore SC000 32-bit RISC core

 x 12 Kbytes of User RAM

 x Up to 480 Kbytes of secure User high-density Flash memory including 128 bytes of User OTP area:

   – 30-year data retention 

   – 500 000 Erase/Write cycle endurance

 x Operating temperature: –25 °C to +85 ° C

 x Three 16-bit timers with interrupt 

x Watchdog timer 

x 21. V to 5.5 V supply voltages

 x External clock frequency up to 10 MHz

 x CPU clock frequency up to 28 MHz 

x Power-saving Standby state 

x Contact assignment compatible with ISO/IEC 7816-3 standards 

x Asynchronous receiver transmitter (IART) with RAM buffer for high speed serial data support (ISO/IEC 7816-3 T=0/T=1 and EMV compliant) 

x ESD protection greater than 6 kV (HBM) 

x CCEAL6+ and EMVCo certification target

Contactless features

 x Complies with ISO/IEC 14443 Type A, B and B’, PayPass and ISO/IEC 18092 passive mode standards

 x Two tuning capacitor values: 20 pF and 68 pF 

x Automatic CPU frequency adaptation for optimum power consumption

 x Automatic RF communication type detection 

x 13.56 MHz carrier frequency 

x RFUART (RF universal asynchronous receiver transmitter) up to 848 Kbps 

x Very high bitrate (ASK VHBR) up to 3.4 Mbps in reception and 6.8 Mbps in transmission

 x Simultaneous mode (contact and contactless) 

x 4-Kbyte RF frame buffer in dedicated RFUART RAM 

x MIFARE Plus and MIFARE DESFire EV1 hardware and software implementation 

x MIFARE Classic available as part of MIFARE Plus 

Security features

 x Active shield 

x Monitoring of environmental parameters 

x Three-key Triple DES accelerator

 x AES accelerator

 x AIS-31 Class PTG2 compliant true random number generator (TRNG)

 x NESCRYPT coprocessor for public key cryptography algorithm

 x ISO/IEC 13239 CRC calculation block 

x Unique serial number on each die 

x Protection against multiple attacks