ST19WG66 datasheet(2/3 Pages) STMICROELECTRONICS

Part #	ST19WG66

Description	Smartcard MCU With 18, 34, 66 Kbytes High Density EEPROM

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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ST19WG18, ST19WG34, ST19WG66

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HARDWARE DESCRIPTION

The product, member of the ST19W 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 ST19W products, a serial in-

terface 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 pack environment for all

WindowsTM 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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