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32bit ARM SC300 secure core with SWP for Secure element or SIM-SWP
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The ST33G1M2 is a serial access microcontroller designed for secure mobile applications that incorporates the most recent generation of ARM® processors for embedded secure systems. Its SecurCore® SC300™ 32-bit RISC core is built on the Cortex® M3 core with additional security features to help to protect against advanced forms of attacks.

The SC300™ core brings great performance and excellent code density thanks to the Thumb®-2 instruction set.

The high-speed embedded Flash memory introduces more flexibility to the system.

The ST33G1M2 also offers a serial communication interface fully compatible with the ISO/IEC 7816-3 standard (T=0, T=1) and a single-wire protocol (SWP) interface for communication with a near field communication (NFC) router in SIM/NFC applications.

An SPI Master/Slave interface is also available for communication in non-SIM applications.

The ST33G1M2 features hardware accelerators for advanced cryptographic functions. The EDES peripheral provides a secure DES (Data Encryption Standard) algorithm implementation, while the NESCRYPT crypto-processor efficiently supports the public key algorithm. The AES peripheral ensures secure and fast AES algorithm implementation.

The ST33G family operates in the –25 to +85°C temperature range and 1.8V, 3V and 5V supply voltage ranges. A comprehensive range of power-saving modes enables the design of efficient low-power applications.

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Data Brief

Key Features

  • Hardware features
  • ARM® SecurCore® SC300™ 32-bit RISC core cadenced at 25 MHz
  • 30 Kbytes of User RAM
  • Up to 1280 Kbytes of User Flash memory with OTP area
  • Asynchronous receiver transmitter supporting ISO/IEC 7816-3 T=0 and T=1 protocols (Slave mode supported)
  • Single Wire Protocol (SWP) Interface for communications with NFC router (ETSI 102-613 compliant)
  • Serial peripheral interface (SPI) master/slave interface
  • Three 16-bit timers with interrupt capability
  • Seven general purpose I/Os enabling proprietary protocol implementation
  • 1.8 V, 3 V and 5 V supply voltage ranges
  • External clock frequency from 1 up to 10 MHz
  • Current consumption compatible with GSM and ETSI specifications
  • Power-saving standby state
  • Contact assignment compatible with ISO/IEC 7816-2
  • ESD protection greater than 4 kV (HBM)
  • Software features
  • Secure Flash Loader
  • Flash drivers
  • Security features
  • Active shield
  • Memory protection unit (MPU)
  • Monitoring of environmental parameters
  • Protection against faults
  • 16- and 32-bit CRC calculation block (ISO 13239, IEEE 802.3, etc.)
  • True random number generator
  • Unique serial number on each die
  • Hardware security-enhanced DES accelerator
  • Hardware security-enhanced AES accelerator
  • NESCRYPT coprocessor for public key cryptography algorithm

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB2056: Secure MCU with 32-bit ARM® SecurCore® SC300™ CPU, SWP, ISO, SPI and GPIO interfaces and high-density Flash memory
2.0 168 KB

Sample & Buy

Part Number Marketing StatusPackageOrder From STUnit Price (US$)*
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Material Declaration**
ST33G1M2ActiveDICE-No availability reported, please contact our Sales officeN/A-

(*) 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
(**) 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.
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