AN1978 datasheet(1/14 Pages) STMICROELECTRONICS

No de pièce	AN1978

Description	SMART CARD INTERFACE

PDF	14 Pages

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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1. INTRODUCTION

The ST8004 is a smart card interface designed to minimize the microprocessor hardware and software

complexity in all the applications that need a smart card, such as Set-Top-Boxes, electronic payments,

pay TV and identification.

The ST8004 is compliant with the NDS requirements. It implements all the blocks and procedures for the

card activation/deactivation as shown in the block diagram of figure 1.

Figure 1: ST8004 internal block diagram

INTERNAL

REFERENCE

SUPPLY

VOLTAGE

SUPERVISOR

STEP-UP CONVERTER

INTERNAL OSCILLATOR

2.5MHz

SEQUENCER

RST BUFFER

VCC

GENERATOR

CLOCK

BUFFER

THERMAL

PROTECTIO

I/O TRANSCEIVER

CLOCK

CIRCUITRY

OSCILLATOR

ST8004

VDD

S2

S1

VDDP

100nF

28

AUX2UC

I/OUC

CLKDIV2

AUX1UC

XTAL2

XTAL1

5/3V

CLKDIV1

CMDVCC

RSTIN

PVCC

22

27

25

24

19

26

2

23

3

21

6

1

7

5

17

14

15

10

9

4

12

11

13

RST

18

OFF

En5

En3

Vref

VTHSEL

PRES

GND

CLK

AUX2

PRES

I/O

AUX1

8

PGND

20

ALARM

VUP

VCC

En2

En1 CLKUP

CLK

En4

16

CGND

100nF

En4

June 2004

1/14

AN1978

APPLICATION NOTE

ST8004: SMART CARD INTERFACE

Numéro de pièce similaire - AN1978

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