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ST33F640：32bit 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
  • CPU clock frequency up to 22.5 MHz
  • External clock multiplier (2x, 3x, and 4x)
  • 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)
    • 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
  • 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.

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