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DATA BRIEF
September 2002
This is Brief Data from STMicroelectronics. Details are subject to change without notice. For complete data, please contact
your nearest Sales Office or SmartCard Products Divison, Rousset, France. Fax: (+33) 4 42 68 87 29.
ST19XS08
Smartcard MCU
With 8 Kbytes EEPROM
PRODUCT FEATURES
I
ENHANCED 8 BIT CPU WITH EXTENDED
ADDRESSING MODES
I
64 KBYTES USER ROM WITH PARTITIONING
I
1.5 KBYTES USER RAM WITH
PARTITIONING
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8 KBYTES USER EEPROM WITH
PARTITIONING plus 128 BYTES USER and ST
OTP AREA:
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
1 to 32 bytes Erase or Program in 2 ms
I
SECURITY FIREWALLS FOR MEMORIES,
and DES ACCELERATOR.
I
VERY HIGH SECURITY FEATURES
INCLUDING EEPROM FLASH
PROGRAMMING AND CLOCK
MANAGEMENT.
I
2x8 BIT TIMERS WITH INTERRUPT
CAPABILITY
I
HARDWARE DES ACCELERATOR WITH
LIBRARY SUPPORT FOR SYMMETRICAL
ALGORITHMS:
DES, triple DES, DESX computations and
CBC chaining mode...
I
ISO 3309 CRC CALCULATION BLOCK
I
FIPS 140-2 COMPLIANT RANDOM NUMBER
GENERATOR WITH TWO GUN REGISTERS
(Generators of Unpredictable Number)
I
2.7 V TO 5.5 V SUPPLY VOLTAGE WITH
10MHz INTERNAL OPERATING FREQUENCY
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UNIQUE SERIAL NUMBER ON EACH DIE
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POWER SAVING STANDBY MODE
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CONTACT ASSIGNMENT COMPATIBLE ISO
7816-2
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SERIAL ACCESS I/O, ISO 7816-3
COMPATIBLE
I
ESD PROTECTION GREATER THAN 5000 V
Figure 1. Delivery Form
(1) Typical values, independent from external clock frequency and
supply voltage.
Function
Speed (1)
Triple DES (with keys loaded)
24 s
Single DES (with keys loaded)
15 s
259a.ai
Micromodule
Wafer
ST19XS08
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HARDWARE DESCRIPTION
The product, member of the ST19X 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 a STMicroelectronics 8 bit CPU and
includes on-chip memories: User ROM, User RAM
and EEPROM with state of the art security fea-
tures. ROM, RAM and EEPROM memories can be
configured into partitions with customized access
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 op-
tions.
The chip includes a DES accelerator which is ac-
cessible via cryptographic software libraries locat-
ed in ST ROM.
As with all the other ST19X 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
INTERNAL BUS
I/O
1 X
SERIAL
INTER-
FACE
GND
8 BIT
CPU
2 X
8 BIT
TIMERS
CRC
MODULE
CLK
CLOCK
GENE-
RATOR
MODULE
Vcc
GUN A
&
GUN B
RAM
USER ROM
ST ROM and
DES LIBRARY
349
SECU-
RITY
ADMIN.
RESET
EEPROM
ST ROM
and DES FIREWALL
MEMORY ACCESS FIREWALL
DES
ACCELE-
RATOR
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ST19XS08
SOFTWARE DEVELOPMENT
Software development and firmware (ROM code/options) generation are done with the ST19-HDSX de-
velopment system on Windows NT, Windows 98 and Windows 2000.
Powerful C/C++ compiler, debugger and simulator are also available.
Figure 3. HDS configuration interface
ST19XS08
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Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics.
All other names are the property of their respective owners
2002 STMicroelectronics - All rights reserved
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