Motorola M68MM01 User manual

M68MM01
MONOBOARD MICROCOMPUTER 1
MICROMODULE 1
The information in this document has been carefullychecked
and is be li eved to be entirely reliable. However, no responsibility
is 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. or others.
Motorola reserves the right to change speci fi cationswithout
notice.
EXORciser and EXbug are trademarks of Motorola Inc.
Fourth Edition
Copyright 1979 by Motorola Inc.
Previous Edition Copyright 1977
"All Ri 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
4. 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 ...................... . ...... ....... 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 P1 Bus Interface Signals .............................. 2-6
Connector P2 PIA Interface Signals ... . ......... • ............... 2-11
Connector P3 PIA Interface Signals ................. .•. ......... 2-15
Connector P4 . PIA Interface Signals .. . ............... . . . .. . ..... 2-18
Monoboard Microcomputer 1 (M68MM01) Parts List
................. 4 -1

1.1 INTRODUCTIO N
CHAPTER 1
GENERAL
INFORMATION
Monoboard Microcomputer 1 (Micromodule 1), as shown in Figure 1-1 , is a
complete computer-on-a-board which will provide the OEM with a so lution to most of
his processing and cont ro l applications. This module, one of a family of
Micromodules, conlains Ihe Microprocessor, the program ER OM or ROM mem ory, R AM
memory,programmable input/oulput interfaces, and Ihe r eq uir ed clock, restart, bus inler-
f ace ,and co n tro l circuitr y. All add re ss r eferences within thi sma nu al are shown in hexadec-
ima l unless otherwise indicated .
1.2 FEATURES
The features of Monoboard Microcomputer 1 include:
• MC6800 Microprocessing Unit (MPU) with its associated clock oscillator,
power on reset timer, and memory decoding logic.
• 1024 bytes of Random Access Memory (RAM).
• Sockets for up 10 4096 bytes of Erasable Read Only Memory ( ER OM) or mask
programmable Read Only Memory (ROM).
•
Thr ee programmable Peripheral Interface Adapter (PIA) devices providing 60
programmable Inpu t/ Output and control lines.
• Address, data, and control bus drivers to interface Monoboa rd Microcomputer
1 wilh other modules in the family or with the E XO Rciser.
• TTL signal level inputs and TTL signal teve l, three state, or open collector
outp ut s.
• Oplional ma ling connectors, and pullup resistors for PIA oulput lines (available on
M 68 M MO H an d M68MM01 -2 onl y. See schemalic an d parts list.)
1.3
SPECIFICATIONS
Monoboard Microcomputer 1 specifications are identif ied in 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
10 4K of EROM or ROM for programming, and three programmable
Peripheral Interface Adapters (
PI 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 EX ORci se r.The
board al so contains th e required two-phase clock generator, th e reset tim er for power
turn-on initializati
on , addr ess bus decoding for establishing the addr esses for each
part, and th e refresh circuit for use with optional external dynamic memories. The
PIA's input/ou tput signals are identified in Table 1- 1.
1-1

1-2
" '"
o
-"
o
c:
o
:;;

•
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
as shown in Figure 1-2. If additional Micromodules are to be used with Monoboard
Microcomputer 1, their address must beselected to 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
of 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
4F
FF
RAM
FFFF
'000
DFFF
0000
ccoo
C800
C400
cooo
5FFF
5BOC
5808
5804
5800
57FF
5000
IFFF
0< 00
AMBIGUOUS ROM ADDRESSES
IA
12 AND A 13 ARE DON'T CARE)
PREFERABLE ROM ADDRESSES
} NOT AVAILABLE
(All NOT INCLUDED IN MEM ·N OT·S ELD)
} MODULE PIA (3) ADORE SSES
} NOT AVA ILABLE
(A ll N OT I NClUDED IN MEM·NOT·SEL D)
AMBIGUOUS RAM ADDRESSES
(AIO, A
II. A12 ARE DON 'T CARE)
03FF }
0000 MODULE RAM ADDRESSES
Figure 1- 2. Monoboard Microcomputer 1 Address Map
1-4

•
Table 1- 1. Monoboard Microcomputer 1 Specifications
CHARACTERISTICS
Microprocessor
Power Requirements
Without EROMs/ROMs
With four EROMs/ROMs
Word Size
Data
Address
Instructions
Instruc
ti ons
Addressing Modes
Clock Signal
Memory Size Capability
ROM/EROM Memory (on board)
RAM (on board)
I/O Addressing (on board)
External Memo ry
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,
or 24 bits
72 variable length instructions.
Seven Add re ssing Modes:
Direct, Relative, Immediate, Indexed,
Extended, Implied, and Accumulator.
Crystal controlled 1 MHz
with
capability to wo rk wi th dynamic
memories.
4K bytes of memory (sockets only)
1K byte of memory
3 MC6820 PIA
48 data lines
12 interrupt/control lines
36K bytes av ai 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 to
function as 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
to act as an interrupt input or as a
peripheral control output.
Eight TTL voltage compatible data
lines that can be programmed to function
as inputs
or outputs.
TTL voltage compatible interrupt
input with programmable active
transition and buffered with inverting
driver.
Pe 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 TT L voltage compatible data lines
that are har dware configured inverting input
or output lines. These data lines must be
programmed to correspond tothe optionally
installed input or output buffers.
PIA3 Interface Signals
CAl
TTL voltage compatible interrupt input
with programmab le active transition.
CA2
TTL voltage compatible li ne; programmable
to act as an interrupt input or as a
peripheral control output.
PAO-PA7 Eight
TT L voltage compatible data lines
that can be programmed to function as
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 ve r.
PBO-PB7 Eight TTL voltage
compatible data lin es
that are hardwar e configured inverting input
or output lines. These data lines must be
programmed
to correspond to the
optionally installed input or output
buffers.
Line Terminators
Optional pull-up resistor divider or terminator
(C B2 and PBO-PB7 on allthree (available on M68MM01-l and
PIA' s) M68MMOI-2 only)
Operating Temperature 0' to
70 'C.
Physical Characteristics
Width x Height 9.75 in. x 6.00 in.
Board Thickness 0.062 in.
Bus Mating
Connector Types
Connector PI (86 pin) Stanford
Applied Engineering
SAC-43D/1-2 or equivalent
Connectors P2 and P4 (50 pin) 3M type 3415-0001
or equivalent
Connector P3 (20 pin)
3M type 3461-0001 or equivalent
1-7