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ST23 Contactless Secure MCU with 8 KBytes EEPROM, enhanced security and DES/AES cryptoprocessor, RF Type A,B,B'
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ST23ZC08 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. ST23ZC08 devices are manufactured using an advanced highly reliable ST CMOS EEPROM technology.

pdf Please read
Errata Sheet
pdf データシート
Data Brief

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
  • 8 Kbytes of User EEPROM including 128 Bytes of User OTP area:Highly reliable CMOS EEPROM submicron technology30-year data retention at 25°C500,000 Erase/Write cycles endurance at 25° C1 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
DB1319: Secure microcontroller with enhanced security with 8 Kbytes EEPROM and contactless-only interface
2.0 102 KB

Publications and Collaterals


Description Version Size
CD21 and CD21 Rev3 for Calypso e-ticketing
1.0.0 205 KB


Description Version Size
Brochure Secure MCUs - Secure solutions ensuring your peace of mind
6,996 KB

サンプル& 購入

製品型名 Marketing StatusAutomotive GradeOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
ST23ZC08Active_-No availability reported, please contact our Sales officeN/A-

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