32bit ARM SC300 secure core with SWP, SPI interfaces and Nescrypt cryptoprocessor

The ST33F1M 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.

Cadenced at 22.5 MHz, the SC300™ core brings great performance and excellent code density thanks to the Thumb®-2 instruction set.

The high-speed embedded Flash with up to 1280 Kbytes of memory introduces more flexibility to the system.

The ST33F1M 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 Slave interface is also available for communication in non-SIM applications. Note that this interface is not available when ISO/IEC 7816 communications are required.

Three general purpose 16-bit timers are available; one configurable as a watchdog.

The ST33F1M 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 ST33F 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.

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com.

ECOPACK® is an ST trademark.

Key Features

  • ST33F1M major applications include:
  • Mobile communications (GSM, 3G and CDMA)
  • Java Card™ applications
  • NFC applications (Banking, Transportation, etc.)
  • Optional MIFARE Classic & DESFire® EV1
  • Secure Element (UICC or embedded)
  • Hardware features
    • ARM® SecurCore® SC300™ 32-bit RISC core
    • Up to 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
    • Serial peripheral interface (SPI) slave interface
    • Three 16-bit timers with interrupt capability including one 16-bit timer with watchdog capability
    • 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
    • High performance provided by:
      • CPU clock frequency up to 22.5 MHz
      • External clock multiplier (2x, 3x, and 4x)
    • 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
    • ISO 3309 CRC calculation block
    • True random number generator
    • Unique serial number on each die
    • Hardware security-enhanced DES accelerator
    • NESCRYPT coprocessor for public key cryptography algorithms (RSA, ECC, etc.)
    • Code/data signature
  • 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.


Technical Documentation

Product Specifications
Description Version Size
DB1218 DB1218: Secure MCU with 32-bit ARM SC300 CPU, SWP interface, NESCRYPT cryptoprocessor and high-density Flash memory 5.0 280 KB

Publications and Collaterals

Description Version Size
Brochure Secure MCUs - M2M for industrial and automotive 1 MB
Brochure Secure MCUs Secure Solutions 1.2 1 MB
Support & Community

Sample & Buy

Part Number Marketing Status Unit Price (US$) * Quantity Package ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
ST33F896 Active - - DICE 5A002A1A 5A002A1A - 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**
ST33F896 ActiveDICEIndustrialN/A

(**) The Material Declaration forms available on st.com 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.