Description

ST21Y036

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Description

The ST21Y036 product is a serial access microcontroller specially designed for cost-

effective secure mobile 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.

The device includes a DES accelerator.

A serial interface fully compatible with the ISO 7816-3 standard (T = 0 and T = 1) for

Smartcard applications is available.

A CRC calculation block is also available and is directly accessible by the User.

The product architecture is optimized for low power consumption applications. A flexible

clock generator module provides increased performance for specific current requirements.

Figure 1.

ST21Y036 block diagram

579

Internal Bus

I/O

IART

GND

8/16-bit

CPU

Core

2 x

8-bit

timers

CRC

Module

CLK

Clock

Gene-

rator

Module

Vcc

True

Random

Number

Gene-

rator

Security

Adminis-

trator

RESET

RAM

ST ROM

(Boot software)

EEPROM

DES

Accelerator

User ROM

ST ROM Firewall