ST ST23ZL48 User Manual
ST23ZL48
259a.ai
Micromodule Wafer
Smartcard MCU
with enhanced security, crypto-processor and 48 Kbyte EEPROM
Data brief
Features
Hardware features
■ Enhanced 8/16-bit ST23 CPU core with
16 Mbytes of linear addressable memory
■ 300 Kbytes of User ROM
■ 6 Kbytes of User RAM
■ 2 Kbytes of NESCRYPT RAM
■ 48 Kbytes of User EEPROM including 128
Bytes of User OTP area:
– Highly reliable CMOS EEPROM submicron
technology
– 30-year data retention
– 500,000 Erase/Write cycles endurance
typical at 25° C
– 1 to 64 byte Erase or Program in 1.5 ms
■ Enhanced NESCRYPT crypto-processor for
public key cryptography
■ Three 8-bit timers with watchdog and interrupt
capability
■ 3 V and 5 V supply voltage ranges
■ External clock frequency up to 10 MHz
■ High performance provided by:
– CPU clock frequency up to 29 MHz
■ Power-saving Standby state
■ Contact assignment compatible with
ISO/IEC 7816-3 standards
■ Asynchronous receiver transmitter (IART) for
high speed serial data support (ISO/IEC 78163 and EMV™ compliant)
■ ESD protection greater than 5 kV (HBM)
Security features
■ Active shield
■ Monitoring of environmental parameters
■ Protection mechanisms against faults
■ Hardware security enhanced DES accelerator
■ AIS-31 class P2 compliant true random
number generator (TRNG)
■ ISO 3309 CRC calculation block
■ Memory protection unit (MPU)
■ Unique serial number on each die
Development environment
■ Software development and firmware
generation are supported by a comprehensive
set of development tools dedicated to software
design and validation:
–C compiler
– Simulator
–Emulator
Applications
ST23ZL48 major applications include:
■ Banking
■ ID
■ Pay TV applications
July 2009 Doc ID 15910 Rev 1 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
1
Description ST23ZL48
Ai12565
Internal Bus
2 I/Os
IART
GND
8/16-bit
CPU
Core
3 x
8-bit
timers
CRC
Module
CLK
Clock
Gene-
rator
Module
Vcc
True
Random
Number
Gene-
rator
RAM
ST ROM
(Boot software)
Security
Monitor-
ing and
Control
RESET
EEPROM
EDES
Accelerator
User
ROM
ST ROM Firewall
NESCRYPT
NESCRYPT RAM
MPU
1 Description
The ST23ZL48 product is a serial access microcontroller specially designed for secure
smartcard applications.
It is based on an enhanced STMicroelectronics 8/16-bit CPU core offering 16 Mbytes of
linear addressing space. It is manufactured using an advanced highly reliable ST CMOS
EEPROM technology.
Moreover, an ISO 7816-3 EMV-compliant asynchronous receiver transmitter (IART)
communication peripheral is available.
Figure 1. ST23ZL48 block diagram
2/4 Doc ID 15910 Rev 1
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