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ST19NM34 Arkusz danych(PDF) 2 Page - STMicroelectronics |
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ST19NM34 Arkusz danych(HTML) 2 Page - STMicroelectronics |
2 / 3 page ST19NM34 2/3 HARDWARE DESCRIPTION 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 reli- able ST CMOS EEPROM technology. It is based on the STMicroelectronics 8 bit CPU al- ready 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 into partitions with customized ac- cess rules. An additional ST ROM contains all ST provided functions and libraries. Access from any memory area to another are pro- tected by hardware FIREWALLS. Access rules are User defined and can be selected by mask options or during the life of the product. The chip includes a DES accelerator which is ac- cessible via cryptographic software libraries locat- ed in ST ROM. As with all the other ST19N products, a serial inter- face fully compatible with the ISO7816 standard for Smartcard applications is available. A CRC calculation block is also available and is di- rectly accessible by the User. Figure 2. Block Diagram SOFTWARE DEVELOPMENT Software development and firmware generation (ROM and options) are supported by a compre- hensive set of development tools, dedicated at de- velopment and validation of softwares: – Smartcard ICs Emulator, – ST19X simulation package, – ScDevTools environment for WindowsTM NT, 2000, XP based stations, – Powerful C/C++ compiler and debugger are also available (third party tools). INTERNAL BUS I/O 1 SERIAL INTER- FACE GND 8 BIT CPU 3 X 8 BIT TIMERS CRC MODULE CLK CLOCK GENE- RATOR MODULE Vcc GUN A & GUN B RAM USER ROM ST ROM and DES LIBRARY 399 SECU- RITY ADMIN. RESET EEPROM ST ROM and DES FIREWALL MEMORY ACCESS FIREWALL DES ACCELE- RATOR |
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