大量供应ST31G480芯片

                                           ST31G480   ，ST31G384  ， ST31G320    ，ST31G256
Secure dual interface microcontroller，with enhanced security and up to 480 Kbytes of Flash memory
Features
Hardware features
* ARM® SecurCore® SC000™ 32-bit RISC core
* 12 Kbytes of User RAM
* 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
*Operating temperature: –25 °C to +85 ° C
* Three 16-bit timers with interrupt
* Watchdog timer
* 21. V to 5.5 V supply voltages
* External clock frequency up to 10 MHz
* CPU clock frequency up to 28 MHz
* Power-saving Standby state
* Contact assignment compatible with
ISO/IEC 7816-3 standards
*Asynchronous receiver transmitter (IART) with
RAM buffer for high speed serial data support
(ISO/IEC 7816-3 T=0/T=1 and EMV®
compliant)
* ESD protection greater than 6 kV (HBM)
*CCEAL6+ and EMVCo certification target
Contactless features
* Complies with ISO/IEC 14443 Type A, B
and B’, PayPass™ and ISO/IEC 18092 passive
mode standards
*Two tuning capacitor values: 20 pF and 68 pF
* Automatic CPU frequency adaptation for
optimum power consumption
* Automatic RF communication type detection
* 13.56 MHz carrier frequency
* RFUART (RF universal asynchronous receiver
transmitter) up to 848 Kbps
* Very high bitrate up to 3.4 Mbps
in reception and 6.8 Mbps in transmission
* Simultaneous mode (contact and contactless)
* 4-Kbyte RF frame buffer in dedicated RFUART
RAM
* MIFARE Plus® and MIFARE® DESFire® EV1
hardware and software implementation
* MIFARE® Classic available as part of
MIFARE Plus®
Security features
* Active shield
* Monitoring of environmental parameters
* Three-key Triple DES accelerator
* AES accelerator
* AIS-31 Class PTG2 compliant true random
number generator (TRNG)
* NESCRYPT coprocessor for public key
cryptography algorithm
* Unique serial number on each die
* Protection against multiple attacks

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