ST ST23YR04 User Manual
ST23YR04
259a.ai
Micromodule Wafer
Dual contactless smartcard MCU with 4 Kbytes EEPROM,
enhanced security, cryptoprocessor and optimized RF performance
Data brief
Features
Hardware features
■ Enhanced 8/16-bit ST23 CPU core with
16 Mbytes linear addressable memory
■ 230 Kbytes of User ROM
■ 4 Kbytes of User RAM
■ 2 Kbytes of NESCRYPT RAM
■ 4 Kbytes of User EEPROM including 128 bytes
of User OTP area:
– 30-year data retention at 25° C
– 500,000 erase/write cycles at 25° C
– 500,000 Erase/Write cycles endurance
typical at 25° C
– 1 to 64 bytes Erase or Program in 2 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
■ Adjustable clocks for better granularity
■ 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 7816-3 and EMV™ compliant)
■ ESD protection greater then 6 kV (HBM) for
contact pads and 4 kV for contactless pads
Contactless features
■ Complies with ISO/IEC 14443 type B,
Innovatron (type B’) and PayPass™ standards
■ 13.56 MHz carrier frequency
■ RF frame up to 512 bytes
■ RFUART (RF universal asynchronous receiver
transmitter) up to 848 Kbps
■ 0.5 Kbytes dedicated RFUART RAM
■ BPSK - NRZ load modulation (card-to-reader)
■ 8 to 14% amplitude modulation reception
(reader to card) as minimum range
■ Enhanced RF performance provided by CPU
clock frequency up to 29 MHz coupled with
clock frequency divider
Security features
■ Active shield
■ Hardware security enhanced DES accelerator
■ Monitoring of environmental parameters
■ Protection mechanisms against faults
■ 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
■ Interface with RF readers supported through a
library of embedded software functions
compatible with ISO/IEC 14443 standards.
■ Software development and firmware
generation are supported by a comprehensive
set of development tools dedicated to software
design and validation:
– C compiler, simulator and emulator
Applications
ST23YR04 major applications include:
■ EMVCo banking, ID and transport
September 2011 Doc ID 022221 Rev 1 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
1
Description ST23YR04
1 Description
ST23YR04 devices are serial access microcontrollers custom-designed for secure
smartcard applications.
They are based on an enhanced STMicroelectronics 8/16-bit CPU core offering 16 Mbytes
linear addressing space. They are manufactured using an advanced highly reliable ST
CMOS EEPROM technology.
An RF Interface including an RF universal asynchronous receiver transmitter (RF UART)
enables contactless communication up to 848 Kbits/s compatible with the ISO 14443-B
standard and also enables Innovatron (type B’) communication.
Moreover, an ISO/IEC 7816-3 EMV-compliant asynchronous receiver transmitter (IART)
communication peripheral is available.
Figure 1. ST23YR04 block diagram
RAM
RF
Inter-
face
AC0 AC1
EEPROM
RF UART
RAM
RF UART
CRC
Module
User
ROM
(Boot software)
ST ROM Firewall
Internal Bus
Clock
Gene-
rator
Module
CLK
ST ROM
3 x
8-bit
Timers
Security
Monitor-
ing and
Control
RESET
EDES
Accelerator
True
Random
Number
Gene-
rator
GND
Vcc
NESCRYPT
NESCRYPT RAM
MPU
IART
8/16-bit
CPU
Core
2 I/Os
Ai15204
2/4 Doc ID 022221 Rev 1
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