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ST19NA18：ST19 8b secure MCU with 18KB EEPROM and Modular Arithmetic processor

The product, member of the ST19N platform, is a serial access microcontroller specially designed for cost-effective secure portable applications.

It is manufactured using an advanced highly reliable ST CMOS EEPROM technology.

It is based on the STMicroelectronics 8-bit CPU already implemented on the ST19X product family and includes on-chip memories: User ROM, User RAM and EEPROM with state-of-the-art security features. ROM, RAM and EEPROM memories can be configured intopartitions with customized access rules.

An additional ST ROM contains all ST provided functions and libraries.

Access from any memory area to another are protected by hardware firewalls. Access rules are user-defined and can be selected by mask options.

The chip includes an Enhanced DES accelerator which is accessible via cryptographic software libraries located in ST ROM.

The chip includes a Modular Arithmetic Processor (MAP) based on a 1088-bit processor architecture. It processes modular multiplication, squaring and additional operand calculations up to 2176 bits.

The Internal MAP and Enhanced DES accelerator are designed to speed up cryptographic calculations using Public Key Algorithms and Secret Key Algorithms.

As with the other ST19N products, two serial interfaces compatible with the ISO 7816 standard are available.

A CRC calculation block is also available and is directly accessible by the User.

Key Features

• ST19NA18 applications include:
  • Pay TV, Banking and Secure applications
• Hardware and dedicated software
  • Highly reliable CMOS EEPROM submicron technology
  • Error Correction Code for single bit fail correction within a byte
  • 10-year data retention
  • 18 Kbytes User EEPROM with partitioning, 64 Bytes User OTP and 64 Bytes ST OTP areas:
    • Highly reliable CMOS EEPROM submicron technology
    • Error Correction Code for single bit fail correction within a byte
    • 10-year data retention
    • 500,000 Erase/Write cycles endurance
    • Erase or Program 1 to 64 Bytes in 1.5 ms
  • Three 8-bit timers with interrupt capability
  • 3V and 5V supply voltage ranges
  • Power-saving Standby mode
  • Serial access I/Os, ISO 7816-3 compatible
  • ISO Asynchronous Receiver Transmitter for high speed serial data support
  • ESD protection greater than 5000 V
• Security features
  • Fast modular multiplication and squaring using Montgomery method
  • Software Crypto libraries in separate ST ROM area for efficient algorithm coding using a set of advanced functions
  • Software selectable operand length up to 2176 bits
  • AES-128 software library
  • 1088-bit Modular Arithmetic Processor with library support for asymmetrical algorithms
    • Fast modular multiplication and squaring using Montgomery method
    • Software Crypto libraries in separate ST ROM area for efficient algorithm coding using a set of advanced functions
    • Software selectable operand length up to 2176 bits
    • AES-128 software library
    • Built-in DFA countermeasures
    • Glitch detector
  • ISO 3309 CRC calculation block
  • FIPS 140-2 and AIS31 compliant True Random Number Generator (TRNG) with two TRNG registers
  • Unique serial number on each die
  • High performance provided using high speed internal clock frequency (up to 28 MHz)

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