Description

ST23YR80

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Description

The ST23YR80 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.

Figure 1.

ST23YR80 block diagram

Ai15204

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

RF UART

RF

Inter-

face

AC0

AC1

RF UART

RAM