M68000 datasheet(2/189 Pages) FREESCALE

2 / 189 page

MOTOROLA

M68000 USER’S MANUAL

vii

TABLE OF CONTENTS

Paragraph

Page

Number

Title

Number

Section 1

Overview

1.1

MC68000................................................................................................ ..... 1-1

1.2

MC68008................................................................................................ ..... 1-2

1.3

MC68010................................................................................................ ..... 1-2

1.4

MC68HC000................................................................................................ 1-2

1.5

MC68HC001................................................................................................ 1-3

1.6

MC68EC000 ................................................................................................ 1-3

Section 2

Introduction

2.1

Programmer's Model ................................................................................... 2-1

2.1.1

User's Programmer's Model .................................................................... 2-1

2.1.2

Supervisor Programmer's Model ............................................................. 2-2

2.1.3

Status Register ........................................................................................ 2-3

2.2

Data Types and Addressing Modes ............................................................ 2-3

2.3

Data Organization In Registers ................................................................... 2-5

2.3.1

Data Registers ......................................................................................... 2-5

2.3.2

Address Registers ................................................................................... 2-6

2.4

Data Organization In Memory ..................................................................... 2-6

2.5

Instruction Set Summary ............................................................................. 2-8

Section 3

Signal Description

3.1

Address Bus ................................................................................................ 3-3

3.2

Data Bus...................................................................................................... 3-4

3.3

Asynchronous Bus Control.......................................................................... 3-4

3.4

Bus Arbitration Control ................................................................................ 3-5

3.5

Interrupt Control .......................................................................................... 3-6

3.6

System Control............................................................................................ 3-7

3.7

M6800 Peripheral Control ........................................................................... 3-8

3.8

Processor Function Codes .......................................................................... 3-8

3.9

Clock ........................................................................................................... 3-9

3.10

Power Supply .............................................................................................. 3-9

3.11

Signal Summary ......................................................................................... 3-10

Freescale Semiconductor, Inc.

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