ST ST23YR08 User Manual

ST23YR08

Dual contactless smartcard MCU with 8 Kbytes EEPROM, enhanced security, cryptoprocessor and optimized RF performance

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

■8 Kbytes of User EEPROM including 128 bytes of User OTP area:

–30-year data retention 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

■Hardware security enhanced DES accelerator

■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

Data brief

259a.ai

Micromodule Wafer

■RFUART (RF universal asynchronous receiver transmitter) up to 848 Kbits/s

■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

■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

ST23YR08 major applications include:

■ EMVCo banking, ID and transport

March 2010

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www.st.com

ST23YR08	Description

1 Description

The ST23YR08 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 linear addressing space. It is 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 7816-3 EMV-compliant asynchronous receiver transmitter (IART) communication peripheral is available.

Figure 1. ST23YR08 block diagram

RAM	EEPROM	User	ST ROM			EDES	NESCRYPT
			(Boot software)		Accelerator
	ROM
		ST ROM Firewall					NESCRYPT RAM
		Internal Bus
	RF UART			Security		True	MPU
RF	RAM	Clock
			3 x			Random
	CRC	Gene-		Monitor-
Inter-			8-bit			Number		IART
	Module	rator		ing and
face			Timers			Gene-
		Module		Control
	RF UART					rator	8/16-bit
AC0	AC1	CLK		RESET		Vcc GND	CPU
							Core	2 I/Os
								Ai15204

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