Intel MCS48 User manual

ImMCS-48™ Family

of Single Chip Microcomputers

USER'S MANUAL

April 1979

©Intel Corporation, 1979

9800270E

MCS-48 "Pin Configurations

P26 Ci40 J

P27 C239 3

AVccC 336 J

Varef C437 ]

AN1 C536 J

ANO C635

AVssC 734

TOC B33

VihC 932 2

POO C10 8022 31 H

P01 C11 30 D

P02 C12 29 J

P03 C13 26 2

P04 C14 27 t

P05C 16 26 -!

P06 C16 25,

P07 C17 20

ALE C18 23

TlC 19 22 3

VssC 20 21 J

VCC

P25

P24

PROG

P23

P22

P21

P20

Pi 7

P16

PIS

P14

P13

P12

P11

P10

RESET

XTAL2

XTAL 1

SUBST

P22 Ciw28 ]

F>23 c227 2

PROG r: 326 2

POO c425 h

P01 c524 3

PD2 c623 b

P03 c78021 22 2

P04 ca21 2

P06 c920 2

P06 c10 19 -

PC 7c11 18 2

ALE !- 12 17 2

T1 •~ 13 16

vss c14 15 J

VCC

P21

P20

P17

P16

P15

P14

P13

P12

P11

P10

RESET

XTAL 2

XTAL 1

PROG AND CE C140 :vcc

CEC 239 DPB 7

CLK C336 -jps 6

RESET C437 DPBs

VDnC 536 DPB4

READY £635 UPB3

io/m C34 DPB2

ior C833 DpBi

RD C922 2p%

iow C10 8355 31 -JPA7

ALEC 11 8755A 3DPAS

adql: 12 29 I] PA6

fl0lC 13 28 J™4

AD2[: 14 ?:i DPA3

AD3EIB 23 -JPA2

AD4Q16 25 3™i

AD5C17 Z4 3PAo

AD6[I IB 23 3Aio

AD?C 19 22 DAg

vssC 20 21 HA8

PCj C140 2vcc

pc„ C239 2PC2

TIMER IN C336 2PC,

RESET C437 Upc

pcsC536 1PBj

TIMER OUT C63Si Dpe6

IO/M C734 2PB5

*c833 "1 PB,

RD E932 3PB3

WR C10 8155 31 2PB ?

ALE C11 8156 30 HPB,

AD C12 2a 2pb

AD, C13 28 DPA,

ADj Q14 27 HPA6

AD3C15 ZS. 3PA^

AD4C16 25 I] PA,

AD5C17 24 1PA3

AD6C18 23 3PA2

AD7C19 22 Dpa,

VSS C20 21 3PA„

166"

156

P5t>C

P40C

P41L

P42 C

P43T

csC

progC

P23C

P22C

P21 C

P20C

gndC

8243

24 3VCc

23 3P51

22 I)P52

21 ^P53

20 It P60

IS UP61

IS 2P62

17 JP63

11, "I P73

15 JP72

141 "'J 171

12 DP70

INTEL COfiPOfWTlOH, 197S

MCS-48™

MICROCOMPUTER

USERS MANUAL

The following are trademarks of Intel Corporation and may be used only to describe

Intel products: Intel, ICE, INSITE, InteJIec, iSBC, Library Manager, MCS, Megachas-

sis, MICROMAP, MULTIBUS, PROMPT, RMX, UPI, uScope, PROMWARE, ICS and

the combination of MCS, ICE, iSBC, iCS or RMX with anumerical suffix.

publication including any mnemonics contained herein may be reproduced without

the prior written permission of Intel Corporation, 3065 Bowers Avenue, Santa Clara,

CA 95051

MOIXCVII

TABLE OF CONTENTS

Chapter 1Introduction

1.0 Introduction to MCS-48™ 1-1

The Functions of aComputer ...... 1-5

Typical Computer System 1-5

Architecture of aCPU 1-5

Computer Operations . . 1-8

1,2 Programming aMicrocomputer

Machine Language Programming

Assembly Language Programming

1.3 Developing an MCS-48™ Based Product

Education

Function Definition

Hardware Configuration

Code Generation

Prompt 48

Intellec Development System

Production

Chapter 2The Single Component MCS-48™ System

8048/8748/8035 and 8049/8039

2.0 Summary ,2-1

Architecture 2-1

2.2 Pin Description 2-14

2.3 Programming, Verifying and Erasing EPROM 2-16

2.4 Test and Debug 2-18

8021

25Program Memory 2-20

2,6 Data Memory 2-20

21 Oscillator and Clock ,2-21

2.8 Timer/Event Counter ,2-21

2.9 Input/Output Capabilities 2-22

2.10 CPU ,2-24

2. 1

Reset 2-24

8022

2. 1

Program Memory ,2-25

2. 13 Data Memory ,2-25

2. 14 Oscillator and Clock 2-26

2. 15 Timer/Event Counter 2-26

2. 16 Input/Output 2-26

2. 17 Test and Interrupt Inputs .

2.18 Analog to Digital Converter

2.19 CPU

2.20 8022 Testing ......,..,

2-27

2-28

2-29

Chapter 3The Expanded MCS-48™ System

3.0 Summary 3-1

Expansion of Program Memory 3-1

Instruction Fetch Cycle -3-1

Extended Addressing ...3-1

Restoring Port Information 3-2

Expansion Examples ....3-2

3.2 Expansion of Data Memory ,.,,...,,. 3-4

Read Write Cycle .3-4

Addressing External Memory 3-5

Examples of Data Memory Expansion 3-5

3.3 Expansion of Input/Output 3-5

I/O Expander Device 3-6

Expansion with Standard Peripherals 3-7

Combination Memory and I/O Expanders 3-7

Expansion Examples 3-8

3.4 Multi-Chip MCS-48** Systems 3-9

3.5 Bank Switching ..... 3-10

3.6 Control Signal Summary 3-11

3.7 Port Characteristics 3-11

Chapter 4Instruction Set

4.0 Introduction 4-1

Data Transfers 4-1

Accumulator Operations 4-2

Flags 4-2

Branch Instructions 4-2

Subroutines 4-3

Timer Instructions —4-3

Control 4-3

input/Output Instructions 4-4

instruction Set Description 4-4

Summary 4-5

Symbols and Abbreviations 4-8

Alphabetic Listings by Mnemonic 4-9

Chapter 5Application Examples

5.0 Introduction 5-1

5. 1Hardware Examples .... . 5-1

Frequency Reference Options 5-1

Stand Alone 8048/8049 5-2

Stand Alone 8021 5-3

Stand Alone 8022 5-4

Multiple Interrupt Sources 5-5

Multiple Prioritized Interrupts 5-6

External Program Memory 5-7

Program Memory and I/O Expansion 5-8

Data Memory and I/O Expansion 5-9

Chapter 5Continued

5.0 Introduction (continued)

AThree Chip System ,,,.5-10

I/O Expansion Techniques 5-11

8049 Emulator Circuit 5-17

General Application Examples 5-19

5.2 Software Examples 5-22

Chapter 6MCS-

8048

8748

8035/8035L

18048/ 18748/ 18035

M8048 M8748 M8035

8049/8039/8039-6

8021

8022

8243

18243

8355

8755

8155/56

8185/8185-2

48™ Component Specifications

ROM Microcomputer 6-1

EPROM Microcomputer 6-1

Microcomputers 6-1

Industrial Temperature Microcomputers 6-10

Military Temperature Microcomputers 6-19

Microcomputers 6-28

Microcomputer ,6-33

Microcomputer 6-36

I/O Expander 6-42

Industrial Temperature 8243 6-48

ROM and I/O Expander ,6-54

EPROM and I/O Expander 6-59

RAM and I/O Expander 6-67

1024X 8-Bit Static RAM for MCS-85™ 6-81

Chapter 7Compatible MCS-48™ Components

2101A/8101A-4 1024 Bit Static MOS RAM with Separate I/O 7-1

211 1A-4 1024 Bit Static MOS RAM with Common I/O 7-5

2316E 16,384 Bit Static MOS ROM 7-9

2708 8192 1K x8EPROM 7-13

2716 16K UV Erasable PROM 7-16

5101 1024 Bit Static CMOS RAM 7-21

8205 High Speed 1Out of 8Binary Decoder 7-25

8212 Eight-Bit Input/Output Port ,7-31

8214 Priority Interrupt Control Unit 7-41

8216/8226 4-Bit Parallel Bi-Directional Bus Driver ,7-45

iii

Chapter 8Peripherals

8251 AProgrammable Communication Interface 8-1

8253/8253-5 Programmable Interval Timer 8-9

8255A/8255A-5 Programmable Peripheral Interface 8-20

8259A Programmable Interrupt Controller .... ,8-41

8273 Programmable HDLC/SOLC Controller 8-59

8278 Programmable Keyboard Interface ,..,8-62

8279/8279-5 Programmable Keyboard Display Interface ...,.».,,, 8-72

8291 QPIB Talker/ Listener 8-84

8292 GPtB Controller 8-108

8294 Data Encryption Unit ,8-110

8295 Dot Matrix Printer Controller 8-111

8041/ 8741 AUniversal Peripheral Interface 8-Bit Microcomputer 8-112

Chapter 9Support Products

Model 220 Intellec Series 11Microcomputer 9-1

Development System

Model 230 Intellec Series 11Microcomputer ..

9-5

Development System

Intellec Prompt 48 MCS-48 Microcomputer 9-9

Design Aid

ICE-49 MCS-48 In-Circuit Emulator 9-15

EM1 8021 Emulation Board 9-20

EM2 8022 Emulation Board --,;9-23

UPP-103 Universal PROM Programmer 9-26

Appendices

Packing Information ,A1-1

Ordering Information ,,A2-

Chapter 1

INTRODUCTION

1.0 Introduction to MCS-48™ -m

1.1 Functions of aComputer 1.5

1.2 Programming aMicrocomputer 1-10

1.3 Developing An MCS-48™ Based Product 1-13

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