Features

Hardware features

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10 Kbytes of User RAM

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Up to 450 Kbytes of secure User high-density Flash memory including 512 bytes

of User OTP area:

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25-year data retention

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500 000 Erase/Write cycle endurance

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Page Erase time: 0.8 ms

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Programming performance up to 2 µs/byte in chained mode

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Flash Erase/Write protection programmable on 32-Kbyte sectors

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

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Three 16-bit timers with interrupt

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Watchdog timer

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2.7 V to 5.5 V supply voltages

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External clock frequency up to 10 MHz

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Power-saving Standby state

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Contact assignment compatible with ISO/IEC 7816-3 standards

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ESD protection (HBM): 6 kV HBM for ISO pads and 4 kV for AC0/AC1

contactless pads

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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

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Complies with ISO/IEC 14443 Type A and EMVCo™

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68 pF tuning capacitor

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Automatic CPU frequency adaptation for optimum power consumption

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13.56 MHz carrier frequency

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RFUART (RF universal asynchronous receiver transmitter) up to 848 kbps

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1-Kbyte RF frame buffer in dedicated RFUART RAM

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software implementation

Security features

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Active shield

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Monitoring of environmental parameters

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Three-key Triple DES accelerator

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AES accelerator

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AIS-31 Class PTG.2 compliant true random number generator (TRNG)

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NESCRYPT coprocessor for public key cryptography algorithm

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ISO/IEC 13239 CRC calculation block

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Unique serial number on each die

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Highly efficient protection against fault attacks

Product status link

ST31P320 ST31P450

Secure dual interface microcontroller with enhanced security and up to

450 Kbytes of Flash memory

ST31P320 ST31P450

Data brief

DB3664 - Rev 4 - January 2020

For further information contact your local STMicroelectronics sales office.

www.st.com