ST23 Contact Secure MCU with 48 Kbytes EEPROM, enhanced security and Nescrypt cryptoprocessor (Contact/PKI)

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Product overview


The ST23ZL48 is a serial access microcontroller custom-designed for secure smartcard applications. It is based on an enhanced STMicroelectronics 8/16-bit CPU core offering 16 Mbytes of linear addressing space. ST23ZL48 devices are manufactured using an advanced highly reliable ST CMOS EEPROM technology.
Moreover, an ISO/IEC 7816-3 EMV-compliant asynchronous receiver transmitter (IART) communication peripheral is available.
  • All features

    • Hardware features
      • Enhanced 8/16-bit ST23 CPU core with 16 Mbytes of linear addressable memory
      • 300 Kbytes of User ROM
      • 6 Kbytes of User RAM
      • 2 Kbytes of NESCRYPT RAM
      • 48 Kbytes of User EEPROM including 128 bytes of User OTP area:
        • Highly reliable CMOS EEPROM submicron technology
        • 30-year data retention
        • 500,000 Erase/Write cycles endurance typical at 25° C
        • 1 to 64 bytes Erase or Program in 1.5 ms
      • Three 8-bit timers with watchdog and interrupt capability
      • 3.3 V and 5 V supply voltage ranges
      • External clock frequency up to 10 MHz
      • High performance provided by:
        • CPU clock frequency up to 27 MHz
      • Power-saving Idle state
      • Contact assignment compatible with ISO/IEC 7816-3 standards
      • Asynchronous receiver transmitter (IART) for high speed serial data support (ISO/IEC 7816-3 and EMV™ compliant)
      • ESD protection greater than 5 kV (HBM)
    • Security features
      • Active shield
      • Enhanced NESCRYPT crypto-processor for public key cryptography
      • Hardware security enhanced DES accelerator
      • Monitoring of environmental parameters
      • Protection mechanisms against faults
      • AIS-31 class P2 compliant true random number generator (TRNG)
      • ISO/IEC 13239 CRC calculation block
      • Memory protection unit (MPU)
      • Unique serial number on each die
    • Development environment
      • Software development and firmware generation are supported by a comprehensive set of development tools dedicated to software design and validation: C compiler, Simulator and Emulator

Circuit Diagram

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STMicroelectronics - ST23ZL48

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