Description

ST21F384

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Description

The ST21F384 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 Flash 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.

ST drivers and ST Loader are located in the ST ROM area.

Figure 1.

ST21F384 Block diagram

622

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

RAM

ST ROM

Security

Adminis-

trator

RESET

Flash

memory

DES

Accelerator

ST ROM

Firewall