Motorola M68MM01 User manual

M68MM01

MONOBOARD MICROCOMPUTER 1

MICROMODULE 1

The information in this

document

has been carefullychecked

and

eved to be entirely reliable. However, no responsibility

assumed

for

inaccuracies.Furthermore,

such

information

does

not convey to the purchaser of the

product

described any license

under the patent rights of Motorola, Inc.

others.

Motorola reserves the right to change speci

cationswithout

notice.

EXORciser and EXbug are trademarks of Motorola Inc.

Fourth Edition

"All

ghts Reserved"

M68MM01(D4)

April, 1979

TABLE OF CONTENTS

Chapter Page

1. GENERAL INFORMATION

........••

•

•...

......

•.

•••...

............

1-1

1.1

Introduction

...............•

•.

.............

.••

...

. . .

. .

...

1-1

1.2 Features

..................••......

......

. .•••

•.................

1-1

1.3 Specifications

.....................

......

..................•...

1-1

1.4 General Oescription

....

........................................

1-1

2. INSTALLATION INSTRUCTIONS. PROGRAMMING AND

INTERCONNECTION CONSiDERATIONS

...........

........

...

2-1

2.1

Introduction

....................................................

2-1

2.2 Unpacking Instructions

..........

..•.

...............

2-1

2.3 Inspection

...................••

•

. .

......••...

...........

2-1

2.4 Installation Instructions

.......•........

....

.•.

.••...

...

.....

2-1

2.5 Programming

.....................

...

.....

•. •

•................

2-1

2.6 Module Interconnections

....•

............

.•••.............

...

2-5

3. THEORY OF OPERATION

.......•

•

...

•.•

..............

3-1

3.1

Introduction

..................•

...

......••.

...

........

3-1

3.2 Block Diagram Description

....

...

...........•............

...

3-1

MAINTENANCE INFORMATION

.......

•

........•........••.....

.....

4-1

4.1

Introduction

....................................

.•

........

...

4-1

Figure

1-1

1-2

3-1

3-2

4-1

Table

1-1

2-1

2-2

2-3

2-4

4-1

LIST OF ILLUSTRATIONS

Page

Monoboard Micr

ocomputer

......................

......

.......

1-2

Monoboard

Microcomputer

1 Address Map

.......................

1-4

Monoboard

Microcomputer

1 Block Diagram

.....................

3-3

Monoboard

Microcomputer

1 Schematic Diagram

.................

3-5

Monoboard Microcomputer 1 Parts Location

........................

4-3

LIST OF TABLES

Page

Monoboard Microcomputer 1 Specifications

...

..........

. 1-5

Connector

Bus Interface Signals

..............................

2-6

Connector

PIA Interface Signals

...

.........

•

...............

2-11

Connector

PIA Interface Signals

.................

.•.

.........

2-15

Connector

. PIA Interface Signals

...............

. . .

.....

2-18

Monoboard Microcomputer 1 (M68MM01) Parts List

.................

-1

1.1

INTRODUCTIO

CHAPTER 1

GENERAL

INFORMATION

Monoboard Microcomputer 1 (Micromodule 1),

shown

Figure

1-1

complete computer-on-a-board which will provide the OEM with a

lution to most of

his

processing and cont

l applications. This module, one of a family of

Micromodules, conlains Ihe Microprocessor, the program ER

or ROM mem

ory,

memory,programmable input/oulput interfaces, and Ihe r

uir

clock, restart, bus inler-

ace

,and

tro

circuitr

All

add

eferences

within

thi

sma

are

shown

hexadec-

ima

unless

otherwise

indicated

1.2 FEATURES

The features of Monoboard Microcomputer 1 include:

• MC6800 Microprocessing

Unit

(MPU) with its associated clock oscillator,

power

reset timer, and memory decoding logic.

• 1024 bytes of Random Access Memory (RAM).

• Sockets for up 10 4096 bytes of Erasable Read Only Memory (

OM) or mask

programmable Read Only Memory (ROM).

•

Thr

ee programmable Peripheral Interface Adapter (PIA) devices providing 60

programmable Inpu

Output

and control lines.

• Address, data, and control bus drivers to interface Monoboa

Microcomputer

wilh

other modules in the family

with

the E

Rciser.

•

TTL

signal level inputs and

TTL

signal

teve

l, three state, or open collector

outp

• Oplional

ling connectors, and pullup resistors for PIA oulput lines (available

d M68MM01

-2

onl

See schemalic

d parts list.)

1.3

SPECIFICATIONS

Monoboard Microcomputer 1 specifications are identif

ied

Table 1-1.

1.4 GENERAL

DESCRIPTION

The Monoboard

Microcomputer

1 provides the user

with

all of the processing

and

control

power of an MC6800 Microprocessing

Unit

(MPU) working with 1K of

RAM, up

4K of EROM or ROM for programming, and three programmable

Peripheral Interface Adapters (

A). Additionally, the user has the option of

interfacing Monoboard

Microcomputer

1 (via its address, data, and

cont

rol bus

buffers) with other modules in the

Micromodule

family and with the

ORci

r.The

board al

contains

e required two-phase clock generator,

e reset

tim

er for power

turn-on initializati

, addr

ess

bus decoding for establishing the addr

esses

for each

part, and

e refresh circuit for use with optional external dynamic memories. The

PIA's

input/ou

tput signals are identified

Table 1-

1-1

1-2

:;;

•

The 16-bit MPU address bus is decoded on the board and provides RAM (0000-

03FF), the three PIA's (5800-580B) and ROM

(COOO-CFFF)

addresses. Since these

addresses

are

not

fully decoded, there

are

certain nonavailable ambiguous

addresses

shown

Figure 1-2. If additional Micromodules are

be used with Monoboard

Microcomputer

1, their address must beselected

fall within the available memory

locations(200Q-4FFF and 6000-BFFF).

Monoboard

Microcomputer

1 is also bus compatible with the M6800EXORciser.

This

versatility provides the user

with

the means to develop and debug both his

hardware and software and to troubleshoot

production

hardware. Thus,the usercan

take advantage

the EXORciser's optional memory and I/O modules.

1-3

ROM

AVAILABLE

fOR

EXTERNAL

MEMORY

(24K)

AVAILABLE

fOR

EXTERNAL

MEMORY

(12K)

6000

580C

57FF

RAM

FFFF

'000

DFFF

0000

ccoo

C800

C400

cooo

5FFF

5BOC

5808

5804

5800

57FF

5000

IFFF

AMBIGUOUS

ROM ADDRESSES

AND A

ARE DON'T CARE)

PREFERABLE ROM ADDRESSES

} NOT AVAILABLE

(All

NOT

INCLUDED

MEM

·N

OT·S

ELD)

} MODULE PIA (3) ADORE

SSES

}

NOT

AVA

ILABLE

NClUDED

IN MEM·NOT·SEL

AMBIGUOUS

RAM ADDRESSES

(AIO, A

II.

A12

ARE

DON

'T CARE)

03FF }

0000

MODULE

RAM ADDRESSES

Figure 1-

Monoboard Microcomputer 1 Address Map

1-4

•

Table 1-

Monoboard

Microcomputer

1 Specifications

CHARACTERISTICS

Microprocessor

Power Requirements

Without EROMs/ROMs

With four EROMs/ROMs

Word Size

Data

Address

Instructions

Instruc

ons

Addressing Modes

Clock

Signal

Memory Size Capability

ROM/EROM Memory (on board)

RAM (on board)

I/O Addressing (on board)

External

Memo

Interrupts

Internal

External

SPECIFICATIONS

MC6800 MPU

+5Vdc at 1.

lA(max)

+12Vdc at

OmA

-12Vdc at 5mA(max)

+5Vdc at

1.1

A (max)

+12Vdc at 260mA (max)

-12Vdc at 180mA (max)

8 bits

16 bits

8, 16,

bits

72 variable length instructions.

Seven Add

ssing Modes:

Direct, Relative, Immediate, Indexed,

Extended, Implied, and Accumulator.

Crystal controlled 1 MHz

with

capability to wo

th dynamic

memories.

4K bytes of memory (sockets only)

1K byte of memory

3 MC6820 PIA

48 data lines

interrupt/control

lines

36K bytes av

lable for external

memory and I/O.

IRQ maskable

interrupt

from PIA's

IRQ maskable

interrupt

and

NMI nonmaskable interrupt.

1-5

Table 1-1. Monoboard

Microcomputer

1 Specifications

(Contd)

CHARACTERISTICS

PIA1 Interface Signals

CAl

CA2

PAD-PA7

CBl

CB2

PBO-PB7

PIA2 I

nterface Signals

CAl

CA2

PAO-PA7

CBl

CB2

PBO-PB3

SPECIFICATIONS

TTL

voltage compatible interrupt

input

with programmable active transition.

TTL

voltagecompatible line;programmable

to act as an interrupt input or as a

peripheral control output.

Eight TTL voltage compatible data

lines that can be programmed

function

inputs or outputs.

TTL

voltage compatible interrupt

input

with programmable active transition

and buffered

with

inverting driver.

Peripheral control

output

buffered

with inverting

open-collector driver.

Eight data

output

lines buffered

with inverting

open-collector drivers.

TTL

voltage compatible interrupt

input with programmable active

transition.

TTL

voltagecompatibleline;programmable

act

interrupt input or

peripheral control output.

Eight TTL voltage compatible data

lines that can be programmed to function

as inputs

outputs.

TTL

voltage compatible interrupt

input

with programmable active

transition and buffered with inverting

driver.

ripheral control output buffered with

inverting open-collector driver.

Four data output lines buffered with

inverting open-collector drivers.

1-6

Table

1-1

. Mo

nobo

ard Microc

ompul

er 1 Specifications (Contd)

CHARACTERISTICS

SPECIFICATIONS

PB4-PB7

Four

L voltage compatible data lines

that are har

dware

configured inverting input

or output lines. These data lines must

programmed

correspond tothe

optionally

installed

input

output

buffers.

PIA3 Interface Signals

CAl

TTL

voltage

compatible

interrupt input

with

programmab

le active transition.

CA2

TTL

voltage

compatible

ne;

programmable

to act

interrupt input or

peripheral

control

output.

PAO-PA7 Eight

L voltage

compatible

data lines

that

can

programmed

function

inputs or outputs.

CBl

TTL

voltage

compatible

interrupt

input

with

programmab

le active transition and

buffered with inverting driver.

CB2 Peripheral

control-output

buffered

with inverting

open-collector

dri

PBO-PB7 Eight TTL voltage

compatible

data lin

that are

hardwar

e configured inverting input

output

lines. These data lines must be

programmed

correspond to the

optionally

installed

input

output

buffers.

Line

Terminators

Optional pull-up resistor divider or terminator

B2 and PBO-PB7 on allthree (available on M68MM01-l and

PIA'

M68MMOI-2 only)

Operating Temperature 0' to

'C.

Physical Characteristics

Width x Height 9.75 in. x 6.00 in.

Board Thickness 0.062 in.

Bus Mating

Connector

Types

Connector

(86 pin) Stanford

Applied

Engineering

SAC-43D/1-2

equivalent

Connectors

and

(50 pin) 3M type 3415-0001

equivalent

Connector

(20 pin)

type 3461-0001

equivalent

1-7

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