ST19XG34
Smartcard MCU with 34KBYTES HIGH DENSITY EEPROM
DATA BRIEFING
ST19XG34FEATURES
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Figure 1 Delivery Form
4
4
ENHANCED 8 BIT CPU WITH EXTENDED
ADDRESSING MODES
70K BYTES USER ROM WITH PARTITIONING
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2K BYTES USER RAM WITH PARTITIONING
s
34K BYTES USER EEPROM WITH
PARTITIONING
– Highly reliable CMOS EEPROM submicron
technology
– Error Correction Code for single bit fail correc-
tion within a byte
– 10 year data retention
– 100,000 Erase/Write cycles endurance
– 1 to 64 bytes Erase or Program in 2 mS
s
SECURITY FIREWALLS FOR MEMORIES,
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VERY HIGH SECURITY FEATURES
INCLUDING EEPROM FLASH PROGRAM,
AND CLOCK MANAGEMENT.
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3x8 BIT TIMERS WITH INTERRUPT
CAPABILITY
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HARDWARE DES ACCELERATOR
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CRYPTOGRAPHIC LIBRARY:
– DES, triple DES, DESX computations and
CBC chaining mode
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s
s
4
Micromodule
Function
Triple DES (with keys loaded)
Single DES (with keys loaded)
ISO 3309 CRC CALCULATION BLOCK
UP TO 10MHz INTERNAL OPERATING
FREQUENCY AT 5 AND 3 VOLTS
UNIQUE SERIAL NUMBER ON EACH DIE
SAVING STANDBY MODE
(1)
Typical values, independant from external clock frequency and
supply voltage.
4
Notch
Wafer
Speed (1)
31
µs
19
µs
s
s
POWER
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CONTACT ASSIGNMENT COMPATIBLE ISO
7816-2
2 SERIAL ACCESS
COMPATIBLE
I/O’S,
ISO
7816-3
s
s
s
ESD PROTECTION GREATER THAN 5000V
3 TO 5V SUPPLY VOLTAGE RANGE
September 2000
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
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HARDWARE DESCRIPTION
The ST19XG34, a member of the ST19 platform,
is a serial access microcontroller especially de-
signed for very large volume and cost effective se-
cure portable applications.
The ST19XG34 is based on a STMicrolectronics 8
bit CPU and includes on chip memories: 70 K
User ROM, 2016-byte User RAM and 34K User
EEPROM with state of the art security features.
ROM, RAM and EEPROM memories can be con-
figured into partitions with customized access
rules.
Figure 2 Block diagram
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 or during the life of the product.
The chip includes a DES accelerator which is ac-
cessible via a cryptographic system ROM soft-
ware library.
A CRC calculation block is also available and is di-
rectly accessible by the User.
This product is manufactured using an advanced
highly reliable ST CMOS EEPROM technology.
As with all the other ST19 products, it is fully com-
patible with the ISO7816 standard for Smartcard
applications.
RAM
EEPROM
34K bytes
USER ROM
70K bytes
2016
Bytes
SYSTEM
ROM
SYSTEM
AND
ROM
CRYPTO
LIBRARIES
MEMORY ACCESS FIREWALL
SYSTEM
ROM
FIREWALL
INTERNAL BUS
CRC
MODULE
CLOCK
GENERA-
TOR
MODULE
3X
8 BIT
TIMERS
SECURITY
ADMINISTRATOR
GUN A
&
GUN B
8 BIT
CPU
SERIAL
I/O
INTER-
FACE
DES
ACCE
LERATOR
CLK
RESET
Vcc
GND
I/O
SCP 155a/DS
SOFTWARE DEVELOPMENT
Software development and firmware (ROM code/
options) generation are done with the ST19-HDSX
development system, on Windows NT and Win-
dows 98. Powerfull C/C++ compiler, debugger
and simulator are also available.
SYMMETRICAL ALGORITHMS:
– DES, triple DES, DESX computations
– CBC chaining mode
– Loading / Unloadings from / to registers are se-
cured against SPA
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