ST23 Contactless Secure MCU with 2 KBytes EEPROM, enhanced security and DES/AES cryptoprocessor, RF Type A,B,B'

ST23ZC02 products are secure microcontrollers specially designed for secure smartcard applications.

They are based on an enhanced STMicroelectronics 8/16-bit CPU core offering 16 Mbytes of linear addressing space. ST23ZC02 devices are manufactured using an advanced highly reliable ST CMOS EEPROM technology.

Key Features

  • Hardware features
    • Enhanced 8/16-bit ST23 CPU core with 16 Mbytes of linear addressable memory
    • 92 Kbytes of User ROM
    • 4 Kbytes of User RAM
    • 0.5 Kbytes dedicated RFUART RAM
    • 2 Kbytes of User EEPROM including 128 Bytes of User OTP area:
      • Highly reliable CMOS EEPROM submicron technology
      • 30-year data retention at 25°C
      • 500,000 Erase/Write cycles endurance at 25° C
      • 1 to 32 byte Erase or Program in 1.5 ms
    • Operating temperature: –25° to +85°C (see restricted test conditions)
    • Three 8-bit timers with watchdog and interrupt capability
    • High performance provided by:
      • CPU clock frequency up to 28 MHz
    • Power-saving Standby state
    • ESD protection greater than 5 kV (HBM)
  • Contactless features
    • Complies with ISO/IEC 14443 Type A, B and B’, and PayPass™ standards
    • 13.56 MHz carrier frequency
    • RF frame up to 512 bytes
    • RFUART (RF universal asynchronous receiver transmitter) up to 848 Kbps
  • Security features
    • Active shield
    • Monitoring of environmental parameters
    • Protection mechanisms against faults
    • True random number generator (TRNG) (AIS-31 Class P2 compliant)
    • 16-bit Cyclic Redundancy Check (CRC) calculation block (ISO/IEC 13239)
    • Unique serial number on each die
    • AES accelerator
    • Three-key Triple DES accelerator (EDES+)
  • Development environment
    • C compiler, simulator and emulator


Technical Documentation

Product Specifications
Description Version Size
DB1317 DB1317: Secure microcontroller with enhanced security with 2 Kbytes EEPROM and contactless-only interface 2.1 101 KB
Support & Community

Sample & Buy

Part Number Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
ST23ZC02 Active - - NEC EAR99 - MORE INFO No availability reported, please contact our Sales office

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST23ZC02 ActiveDICEIndustrialN/A

(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.