Tandy WP-2 Service Manual

9

TANDY

Service

®

Portable

Microprocessor

Clock Speed

Memory

Keyboard

Display

Externa] Connections

Battery

AC Adapter

Power

Consumption

6VDC)

(ai

Tandy

WP-2

Wordprocessor

Catalog Number:

SPECIFICATIONS

70008

NEC

5.5296 MHz

256 KByte Standard

(VRAM

ROM: Option (IC Card) Expandable up to 256 Kbyte RAM:

Full-size 62 keys.

"Supertwist" LCD, 480

AC Adapter

DB-25 Parallel Printer

DB-9 Serial DIN-8 Cassette

IC Card-38 Memory Card

AA size battery

VDC 400

6

UNIT

mA

A-6(Z80 type)

ROM (BIOS, WORDPROCESSOR,

and Free Area)

Option (RAM chip) Expandable 32 Kbyte or 128 Kbyte (RAM Disk)

Option (IC Card)

Port

Tape

X

mA,

UL listed (Cat. No.

Expandable 32 Kbyte, 64

X

64 pixels, 8X80 characters

Alkaline or Ni-Cd

4,

26-3804)

NORMAL LIMIT

80-90

26-3930

and

Kbyte, 128 Kbyte (IC Card)

140

speli

check), 32 KByte Standard RAM

Radio Shack and Tandy

All

Rights Reserved.

are registered trademarks of

Tandy

Corporation.

CONTENTS

Section I SYSTEM OVERVIEW

1-1

I-2 Internal View.. 1-4

I-3 Specifications 1-6

Section II DISASSEMBLY

11-1

II-2 Keyboard 2-3

II-3

II-4 Main PCB II-5 Sub PCB

Section III

lll-l

Section IV

IV-1 Hardware

IV-2 Description IV-3 CPU 4-4 IV-4 Memory IV-5 IV-6 IV-7 IV-8 IV-9

IV-10 Keyboard 4-9

IV-1

IV-1 IV-1 IV-1 IV-1 IV-1 IV-1

IV-1

IV-19

External View

INSTRUCTIONS

Top Case 2-1

LCD

MAINTENANCE

Clean the Case and LCD

Theory of Operation

Specifications

of Block Diagram

Map

Main

Expansion

RAM Control Circuit

ROM Control Circuit

I/O Address

Interrupt

Cassette

1

Printer

2

Interface Circuit

3 Serial Interface Circuit 4 Buzzer Control Circuit

LCD

5

6 Power Supply 7 Software Calls 8

Controller

Software and Hardware Memory

IC Card

Map

Interface Circuit

Display

Map

..

1-1

2-1

2-4

2-4 2-6

3-1 3-1

4-1 4-1

4-4

4-5 4-5

4-6 4-6

4-7 4-9

4-10

4-11

4-12 4-13 4-13

4-14

4-1

4-17 4-20

Section V

TROUBLESHOOTING

5-1

Section

VI-1 Exploded View

VI-2 Electrical Parts List

VI EXPLODED VIEW/PARTS LIST

Main PCB Assembly

Unit

LCD

Mechanical

Keyboard

and Assembly Parts

Unit

Section VII PCB VIEWS

VII-1 Main PCB Top View

VM-2 Main PCB Bottom View

VII-3 LCD PCB View

Section VIM CIRCUIT DIAGRAMS

VIII-1

Main PCB

Circuit Diagrams

APPENDICES

Appendix A. LCD SPECIFICATIONS

1. Application

2. Composition

3. Mechanical

4.

5.

6. Optical Characteristics.....

7. Precautions in Use

8. LCD Module View

Appendix

Electrical Specifications

Interface

B. INSTALLATION

Specifications

OF

OPTIONAL RAM

Appendix C. KEYBOARD LAYOUT,

AND CHARACTER CODE

1

Keyboard Layout

2. Connector Pin Assignments

3. Character Code Tables

Appendix D. ROM CALLS AND SPELLER

1. ROM

2. Speller

Calls

Information

CONNECTER

TABLES.

INFORMATION

PIN ASSIGNMENTS,

6-1

6-2 6-2 6-6 6-7 6-8

7-1 7-1

7-2

7-3

8-1 8-1

-

A-1 A-1 A-1

A-2

- A-3

A-5 A-9

A-1 A-1

B-1

C-1 C-1

C-2 C-5

D-1

D-1 D-1

List

of Illustrations

Table

Number

1-1

1-2

1-3 1-4 1-5

2-1

2-2

2-3 2-4

2-5 2-6 2-7 2-8 2-9

4-1

4-2

4-3

4-4

4-5

4-6 4-7 4-8 4-9

4-10

4-1

4-12 4-13

4-14

6-1 7-1

7-2 7-3

A-1 Block

A-2 Dot

A-3

A-4 LCD Screen

A-5 A-6 A-7 Timing A-8 Optical A-9

A-10

A-11

A-1

B-1 RAM Insertion

C-1

C-2 C-3

C-4 C-5 Printer C-6 External

Front View

View

Rear Bottom

View

Main PCB

LCD PCB

DSUB

Removal

Top

LCD

Keyboard

Connector Screw

of Main Batteries

Case Removal

Cable Removal

Removal

LCD Removal

Main

PCB

Removal

Back-up

Battery Cover and Back-up

Lower Case View

Block Diagram

Memory Map

Main

RAM Control Circuit

Expansion

RAM Control

ROM Control

Interrupt

Keyboard

Cassette Interface

Printer

Serial Interface

Buzzer

LCD

Power Power

Exploded Main PCB Main

LCD PCB

Vo Adjusting

Timing Timing

Definition

Definition of Definition

Operational

LCD

Keyboard Keyboard

RS-232C

Cassette

Control

Interface Circuit

Control Circuit

Controller

Supply

Supply Circuit

Vrew

Top View

PCB Bottom View

View

Diagram

Dimensional

Chart Chart Chart

Characteristics

of

Module

Connector

Card Connector

Removal

Circuit

Drawing

Circuit

Measurement

Response Time

8 and

<b

Contrast

Precautions

Ratio

,

DESCRIPTION

, 2-2

Battery Removal 2-6

,

, A-4

Number

,

System

, C-1

, C-4

,

Page

1-1

1-2

1-3

1-4 1-5

2-1

2-2 2-3

2-4 2-5

2-6

4-3

4.5

4-5

4-6 4-6

4-9 4-9

4-10

4.11

4-12

4-1

4-13 4-14 4-15

6-1 7-1

7-2 7-3

A-1

A-2

A-5 A-6 a-8

A-8

A-9 A-9

A-10

A-1

A-13

B-1

C-1

C-4 C-4 C-4

ni

List

of Tables

Table

Number

C-1

C-2

C-3 Printer Interface C-4 Expansion

C-5 Character

C-6 ESC Sequence Code (VT52)

RS-232C

Cassette Interface

Interface

Card Interface

Table

Code

DESCRIPTION

Page

Number

C-2 C-2 C-2

, C-3

C-5

C-11

]V

I.

SYSTEM

This

manual has

should

be acquainted with

OVERVIEW

been prepared for Tandy

the ^PD70008A-6

technicians

microprocessor

working

in the field or in

repair

and the 82C51 UART.

centers. Users

of

this manual

The Tandy WP-2 has

DRESS),

1-1.

1.

2. LCD

3. Power

4.

5. PROTECT

CALENDAR(SCHEDULE),

External View

Keyboard: Can

Appendix

automatically

CONTRAST

Tandy WP-2

WP-2

the OFF position,

C of this

Screen: The Tandy

Switch:

turns the

control:

Switch: This

operates only

will not

be used for a long

1

.

the following

applications

SPELLCHECK,

be used like a standard

manual

Pressing

and all information

Keyboard

for more details.)

WP-2

display is eight

this

switch turns the

power

off if you do not

This control adjusts

switch

is used

when

the power switch

period of time.

programs

typewriter.

lines by 80

power

use

the contrast of the

to prevent

discharge

is set to ON.

Note

RAM in will

LCD Screen

in the standard

and

FILES.

However,

on and off.

it for 10 minutes in

that the RAM is

be

the Tandy WP-2

characters.

LCD

the

of

Set

lost.

To

display.

Lithium battery,

this

ROM:

TEXT, TELCOM,

have

does

conserve the batteries,

the default setting.

used

switch to the OFF

not backed up when

3. Power

position when the

Switch

PHONE(AD-

a few

special

the Tandy WP-2

for RAM back up. The

this switch is set to

keys, (See

Tandy

Figure

1-1.

i-i

Front View

5. Protection

4.

Contrast

Switch

Control

1.

Expansion

to the system

Card (IC Memory)

bus of the

CPU.

Slol: Insert

the

IC memory

card into this

slot.

The

connector

in the slot is

connected

2. Serial

connector when

3. Printer

connector,

4.

Cassette

An

optional/extra

5.

AC Adapter

extra)

strip.

Interface

using an

Interface

Jack:

to

this connector.

Connector

you

need to receive

Connector:

optional/extra

Connector:

cassette

Connect

Connect the

(RS232C):

For

hard-copy

printer

To save

recorder

the

appropriate

Attach a DB-9

or transmit

or load information

cable is

other end

serial

printouts

cable.

required.

end

of Radio

of

the AC adapter

cable (such

information.

of information,

on a

cassette

Shack's

AC

as Radio Shack

This connector

attach any

tape, connect

adapter {Catalog

to a standard

Catalog

is also

Radio

Shack parallel

AC

wall-outlet or

Number 26-265)

used for

the cassette

the FDD.

printer to this

recorder

Number 26-3804,

approved

to

this

here.

optional/

power

5. AC

3. Printer Interface

4.

Cassette

Adapter Jack

Connector

Interface Connector

©

Figure

1-2.

Seriaf Interface

Rear

View

Connector

(RS232C)

Expansion Card

©

Slot

1-2

1. Main Battery Compartment:

size batteries installed in this compartment.

When

an AC adapter is not connected, the Tandy

WP-2

gets its

power

from four AA

2. Back-up Battery Compartment: The Tandy

installed in this compartment.

the

WP-2

to

Tandy

the Main menu (siari-up). All data stored in RAM

sit at an angle.

3. RESET Button Hole: If the Tandy

push this

press

However, it

4. Stands: Pull down

button; the

RESET.

It

might

display returns

not likely

is

occur

make the

to

that

with customized programs.

©

IB

^R^!-,l:^KM

"=

WP-2

locks up

RAM

gets

(i.e., the display "freezes" and all keys seem to be

back-up

power from a Lithium battery (CR-2430)

will

be lost

WP-2 will lock up when you are using the built-in applications

Main Battery

Compartment

SJAL

:

.la.

N-:UI.

:]

Back-up

©

o

©

|

\

Battery

Compartment

33!

ifeVaH&KT.jq

i

B

ET

(S)

Reset

(=^~

Button

inoperative),

when

you

programs.

3>

«

O

Stands

©

Figure

1-3.

Bottom View

O

©

1-3

1-2.

Internal

Optional RAM Compartment: An

capabilities.

View

optional RAM

can be inserted into this

compartment to

enhance the Tandy WP-2

The Tandy WP-2

*

LCD PCB

*

Keyboard PCB

*

Main PCB

*

Sub PCB

consists

of four printed circuit

boards:

Figure

1-4.

Main PCB (Bottom

[-4

View

and Top View)

Figure

1-5.

LCD

PCB

1-5

1-3.

Specifications

Main Components

Keyboard

Life of

keyboard

Number of keys

All keys

500 million keystrokes

62 keys

{8X8

key matrix)

Keys can be pressed down a distance

of

3 millimeters.

Power

switch

LCD display

Display

Dol pitch Dot size

Effective

Operation batteries

Batteries

Operation time

Memory protection battery

Battery

Back-up

LSls

panel

display area

(approximately)

time

CPU

Press

480

0.44

0.41

211.16

Type AA

Alkaline-manganese

3.5

14

(Note: Without

Lithium battery

More

32

1.5

32

1.5 years (typical)

32 KByte + 128 KByte RAM

switch

the

X

64 full-dot matrix

X

0.44 mm

X

0.41 mm

(W) X

days (typ.)-4 hours per day

days (typ.)-l

than 3 years

down 1 millimeter

28.12 (D) mm

X

4

hour per day

I/O

(270

batteries

units

at normal temperature)

mAh/3.6V)

KByte RAM

years (typical)

KByte +

32 KByte RAM option

MPD70008A-6

Code compatible with Z80

option

turn

to

the WP-2

on or off.

ROM

RAM

Power

consumption

Dimensions

Weight

Maximum 256

KByte

(Memory card)

Standard 256 KByte

Maximum

(Memory card

Standard 32 KByte

Optional

80 mA (typ. at 6VDC)

1"

(H)

25.4 (H)

2.42

32

KByte

+

Optional)

128 KByte

11-2/3"

X

Ibs.(l.lkg) with

297

(W)

(W) X

256 KByte

+

256

8-2/7"

X

210 (D) mm

batteries

1-6

KByte

(D)

Interface

I/O

RS-232C

Conforms to EIA standard signal

Communications protocol

Word

length

Parity

Stop bit length

rate

Baud

XON/XOFF

CR/LF

XMODEM

TXD (Transmit

Data)

RXD (Receive Data)

RTS (Request CTS (Clear

DSR (Data Set Ready)

DTR (Data Terminal Ready)

Send)

to

to Send)

CD (Carrier Detect)

5,6,7,

NONE, EVEN

1,

75,

(19200 bps: when used for the FDD)

Enable/Disable

CR/LF/CR

ASCI1/CRC-XMODEM

or 8 bit

1.5, or 2 bit

1

10, 150,

or ODD

300, 600, 1200,

+

LF

2400, 4800, or

9600

bps

Maximum transmission Maximum Maximum

Minimum

Printer

Conforms to Centronics

Handshake signals

driver

receiver

interface

distance

output voltage

voltage

input

voltage

input

interface standards

16,5 feet

+5

± 15

±

/STROBE,

Audio cassette interface

Data transfer rate

1

500

(Mark

level

Input

Output level 600 mV

Expansion card

interface

RAM card ROM card

0.8to5 volts

32

Less

(5

volts

3

BPS

2400 Hz,

(peak-to-peak)

KHyte,

than

meters)

—8

and

volts

BUSY. /BUSY

Space 1200 Hz)

(peak-to-peak)

64

KByte, or 128 KByte

or equal to 256 KByte

1-7

II.

II-

1.

DISASSEMBLY

Top Case

Remove 4

hexagon

screws from

INSTRUCTIONS

the CN3/CN6

DSUB

Connector.

2.

Remove

the Main

Batteries.

Figure

2-1.

DSUB

Connector Screw

Removal

Figure

2-2.

Removal of Main

Batteries

2-1

3.

4.

Remove

The

upper and

Do

not

5 screws

ihe

upper

apply

lower

loo

"A" from

case.

cases

much

force when

the lower

are

secured

ease.

by

snaps.

pulling it.

Pull

up the front

of

the

upper

case first,

as

shown

below.

5. Disconnect

the LCD

flat cable

Figure 2-3.

from the

Top

connector on

Case

the

main PCB.

Removal

Figure 2-4.

LCD Cable

2-2

Removal

11-2.

Keyboard

Remove

1.

2.

Disconnect the keyboard flat

screws

2

"B"

securing

the keyboard

cable

from the connector on the

to the

bottom case.

main

PCB.

3. Remove

the keyboard.

B

Figure

2-5.

Keyboard

Removal

2-3

II-3.

1.

2.

LCD

Remove

screws

4

the

'C securing

LCD

PCB.

the

LCD PCB

to the

upper

case.

II-4.

Main

1.

Disconnect

2. Remove

Wire

'

2

3

4

5

3.

Remove

PCB

the flat

the

five

assignment

Brown

Red

Orange

Yellow

Green

screw

1

battery

electric

"D"

cable

wires

securing

from

for the

the main

Figure 2-6.

the

connector

cassette

PCB

to

LCD

on

connector

the bottom

Removal

the

main

using

case.

PCB.

a

soldering

iron.

2-4

4.

Remove

the

main

PCB.

Main

PCB

5.

6.

Remove

the

insulator

shield

board.

sheet.

Figure

2-7.

Main

PCB

Removal

Insulator

Sheet

2-5

II-5. Sub PCB

Remove

l.

the back-up

battery cover

and the Lithium battery.

Figure

2. Remove the spring for the

3.

4.

5.

Remove

the main

the buzzer.

the sub PCB.

positive

2-8.

negative

battery

Back-up

battery

terminal.

Battery

terminal.

Cover and Back-up Battery

Removal

Figure

2-9.

Lower Case

View

2-6

III.

IIM.

Clean

1.

avoid

To

2.

Clean the ease

MAINTENANCE

the

Case

and LCD

operational trouble, always

and the LCD screen

Display

keep the

using a soft,

Tandy WP-2

dry, lint-free cloth.

dean.

3. For

Caution: Do

Note:

tough stains,

To

retain the

turn on, even if

clean

use

not

any solvents

contents of RAM,

you push the

the case

or

the LCD screen with

other than

turn

power

"Freon" 1 13.

on the

switch.

protect

"Freon" 1 13.

switch. If

you turn off the

protect switch, the WP-2

will

not

3-1

IV.

THEORY OF

OPERATION

Hardware

IV-i.

CPU

CLOCK

CPU

RAM

ROM

DISPLAY

Control

Graphic

Character

Display

Video RAM

Effective Display

Device

Resolution

Display

Device

Specifications

internal

IC card 32

Area

AtPD70008A-6

NEC

5.5296

288 Kbyte (Maximum,

32 Kbyte (Standard) 32 Kbyte

64 Kbyte

512 Kbyte

256

32 Kbyte

64 Kbyte (Optional IC

256 Kbyte

MSM6255

480

80

Super

3840 bits

211.17

Dot pitch 0.44mm

Aspect 1 ; 1

MHz

(Optional internal RAM)

128 Kbyte

Kbyte

128

128 Kbyte

characters

Dot

(Optional interna)

(Optional IC Card) (Optional IC Card)

(Optional IC

Kbyte

(Maximum)

Kbyte (Standard)

(Optional IC

(Optional (Optional IC

LCD Controller

X

64 dots

twist nematic

X

28.13 mm

0.41mm

size

X

8 lines

LCD panel

X

internal

Card)

Card) Card)

Card)

IC

Card)

0.41 mm

0.44 mm

+

RAM)

IC card)

KEYBOARD

Number of

RS232C

Standard

Device

Word

Parity

Stop

Baud Rate

Output Signal

Input Signal

PRINTER INTERFACE

Control

Output

Keys

INTERFACE

Length

Bit Length

Level

62 keys

(8X8

key matrix)

Conforms to EIA

MPD71051GU

DS14C88 and

or 8 bits

6, 7,

5,

Even, Odd, or None

1.5, or 2

1,

75, 110,

Output

Voltage

MARK

The printer

When

destroying the inner

the

a

interface circuits can

DS14C89AN

bits

150, 300,

base on

signal

SPACE

=

printer is used, the

=

-3V

to

controlled by the

is

Standard

or SN75C188

600, 1200, 2400,

+5V

and

to

+15V

+3V

-15V

connector can be

circuits of

the

effectively withstand

and

4800,

9600,

—

8V

STROBE

device regardless

and BUSY

SN75C189AD

(19200

static discharge

when used for the

signals.

plugged

of power

in or

ON/OFF.

removed

In

breakdown.

FDD)

without

addition,

4-1

AUDIO CASSETTE

Data Rale

Input Level

Output Level

INTERFACE

1 500 BPS

=

(Mark

0.8 to

600

2400

volt (peak-lo-peak)

5

mV (peak-to-peak)

Hz,

Space-

1200 Hz)

MEMORY

Using Model

POWER

CARD INTERFACE

SOURCE

Main Battery

Back-up

Battery Votage Warning

Back-up Warning

Battery

TOSHIBA

Output(DC):

6V,

four AA size

batteries

3V.

270 mAh

This battery

MEMORY CARD

+5V

160mA,

-

15V

1

Alkaline

flat Lithium battery

is used to hold the data

-

8V

0mA

batteries or 4.8V, 450mAh, four

12mA,

RAM.

warning

The The user

V(Alkaline) or 4.7

After the warning, the system can be

warning is indicated by

The

the screen turns on and

voltage goes below

and internal

is

indicated

is instructed to change the

V(Ni-Cd),

2.3 V. Before changing a

expansion)

"LOW BATTERY"

by

"LOW BACKUP" on the screen and one

The user is instructed to change

off.

data to another

A

main RAM and the expanded

of the

the screen and one beep.

on

batteries

used

device(s), or

when the

for about

back-up

10-30 minutes.

battery,

the system

size Nickel-Cadmium

A

internal

voltage goes below

beep. Then,

the battery

save

all RAM

loses

when

(standard

all RAM data.

4.0

the

4-2

Block Diagram

I >

s<H>^

11

4

;

<KE<h

^>

O Q

_l LJ

c

:>

_l

:r

o

T-\l h—

i>

=> o

<l

-

^Z

'. :

: i

a. o

o

I

:

Is<h

I

<H>

_l IT

-n : i

if

n

en LU

<X=>

c

:")

:>

w^

rx

c

Q_

-.

<X^>

Figure

4-1

4-3

Memory Map

IV-4.

Memory

The

Map is

shown

in

Figure

4-2.

Expansion RAM

is mapped on the I/O

address.

ROM:

RAM:

256K

FFFFH

7FFFH

3FFFH

OOOOH

Expandable 16

Expandable 32

BIT S-flAM

ADDRESS

I/O

BIT

1H

INTERNAL

AM

JR

KByte each

KByte

each

MAIN RAH

ALLOCATION

RAM

2M

IC CARD

RAM

IC CARD

ROM 2M

BIT

CONNECTOR

IC

Figure

4-2

CARD CONNECTOR

BIT IC

CARD ROM

Main RAM

IV-5.

4-3

Figure

RAM

The

shows the LCDC DIEN and

in common on a piece of RAM.

WP-2 avoids

Tandy

WAIT signal are

CLOCK

A15

MEftG

REFH

Iffi

DATA

A15

MEHQ

REFH

WH

D

Control Circuit

generated

collision of

in

IC5,

GATE ARRAY 1

IC5

WAIT.

DIEN

GENERATOR

the

CPU

To do

CPU

DIRECT-

ION

this, the Tandy

accessing and LCD

<y->

WAIT control diagram.

WP-2 uses

refresh by

WAIT

DIEN

inF

V

)

j

3WF

V

\

r

HO

OIEN

VRAMOE

VRAMWE

RDATA

The Tandy

synchronous accessing by

waiting for CPU. Both the

WP-2

DATA

+5V

uses

1

T

—

1

So

—

VRAM and MAIN

the DIEN signal.

DIEN signal and

ADDRESS

IC7

LCDC

DIEN

ADDRESS

ICB

—

MAIN

0E

RAM

WE

Figure

4-5

4-3

IV-6. Expansion RAM Control Circuit

4-4

Figure

Bunk

Figure

Both

0-3

4-4

the

shows

is

used

shows

selecting

the

interna) expansion RAM, and bank

the

by

expansion RAM read/write diagram.

the

signal

bank

diagram tor the expansion RAM.

bank

read/wrile signal are generated in 1C5. RAM bank control I/O is in bits

and

4-7

is used by the IC card RAM.

5-7

of

5111

DATA

A15 A14

MERQ

IORQ

IV-7.

Figure

circuit. Bank

ROM

ROM Control Circuit

4-5

bank

IC5 GATE

ARRAY

1

TORD

\

—

A

/

s /

>-

5-7

IC WE

1

t

f

SELECTOR

EXP.

QAM ADDRESS

;[C CARD

ADDRESS

-o

SELECTOR

-u>

BUFFER

5iH

t

shows

the selecting bank diagram for the ROM. Accessing address 0-3FFF is not

0-14

control

is

used

by the standard ROM, and bank

I/O

is in bits

0-4

of

51 H.

Figure

IDRD

HEIRD

4-4

15-30

I0WE

>

c

"

is used

y-

by the

Q

\

s

br^~

n-^

card

ROM.

IC

used

in the

RAMHn

RAMWE

RA*I

f«r-ip

14-17

TA

. IHWE

jrrf

selecting bank

DATA

MERQ

"IORQ

A15

A14

0-1

IC5 GATE ARRAY 1

IOWE

SELECTOR

BUFFER

51H

<h

ROM ADDRESS

IC

ADDRESS

CARD

SEl FCTOR

H>

Figure

4-6

IORD

MERD

4-5

> >

IA

ROA 14

ROMCE

ICCE

-ICOE

14-

17

-17

IV-8.

Address Map

I/O

ADDRESS

OOH

CONTROLLER

UART

10H 11H

TIMER

20H 21H

22 H

23H

PRINTER

30H

31

32 H 32 H bit?

INTERRUPT/NMI

50H

5011

7 Printer

bit

bitO

CONTROL

bitO

hit!

bit2

bit 3

bit4

bit5

bitO

bill

bit2

bit

3

bit4

bit

5

CONTENTS

BIT

scan data

Key

82C51 character 82C51

Timer

control/status

counter

Timer counter 1 Timer Timer control

(setting

Timer

counter 2

word

Printer

Printer Printer /Busy read

Serial RXRDY

data out

strobe out port

Busy read

interrupt mask

counter

Low battery

External

(setting

DC/DC

Back-up

Timer

Serial

interrupt

power off

battery low

(showing

counter

RXRDY

NMI mask

interrupt

Low battery

External

(showing

DC/DC

Back-up

interrupt

NMI mask

power off

battery

data

port

low

data

port

control)

status)

control)

CONTROL

Read/Write

Read/Write Read/Write

Write only Write

only

Write only Write only

Write

only

Write only

only

Read Read only

0/ON.

0/ON, 0/ON, 0/ON.

0/ON. 1/OFF 0/ON.

0/ON. 0/ON. 1/OFF 0/ON. 0/ON,

0/ON,

1/OFF 1/OFF

1/OFF

1/OFF 1/OFF

MEMORY

BANK CONTROL

51H

SYSTEM STATUS

52H

CASSETTE

CONTROL

53H

53H 54H

bit()-4

bit5-7

REGISTER

bitO DC/DC

bitl Beep

bitb bit?

bitO

bill Beep

bit2

bilO bit?

bit?

hi tO

Write/Read

(Write Register)

power control

control

power

LCD

Main battery

(Read Register)

Power switch

status show

RS232C CD

(Read

output data

Read Read input

(Write port)

Remote

counter 1

motor

Timer

select ROM

RAM bank

select

control

select

show-

status

port)

data

set

control

4-7

bank inumber

number

0/ON,

1/OFF

0/OFF. 1/ON 0/OFF.

O/Ni-Cd.

0/ON,

0/ON.

1/ON

/Alkaline

1

1/OFF 1/OFF

0/ENABLE.

0/DISABLE,

0/OFF,

1/ON

1/DISABLE

1/ENABLE

6255

ADDRESS

(LCDC)

60H

ojH

CONTROL

BIT

CON

Read/

Write

Instruction

TENTS

port

register

CONTROL

port

4-8

Interrupt

IV-9.

/*PD70008A-6

The

Externa]

Interrupt by Interrupt

Serial

Low

There

1.

2.

DC/DC

this

Low

the

interrupt:

RXRDY

battery

are

DC/DC

Back-up

Low

OFF is a

signal

back-up

INT1.

LOW

control list:

software

NMI-interrupt

two

off

Battery

signal for

becomes

battery is a

battery

LOW BAIT

BACK

abundant

has

(Non-maskable

NMI

(Maskable

INT

Timer

active,

signal for

voltage

interrupt

counter

sources

emergency

register,

back-up

down to

goes

processing

interrupt)

in the Tandy

power

number and

bank

battery

2.3V. The

off. The

voltage

functions:

WP-2.

DC/DC

interrupt

warning.

low back-up

The

battery

TNTO

active when

signal

becomes

information are

the

saved by

battery

maskable

is

power

software.

signal

supply is

becomes

by the I/O

stopped.

active

port 50H.

When

when

IV-IO.

Tandy

The

strobe

Key

X0-X7

the

IOWE

50H

Keyboard

WP-2 uses an

signals

terminals of IC6 and

are emitted

D0-D2

internal

from

LATCH

BUFFER

keyboard.

the YO to

are sent to

IC6

Fi

Y7 terminals

CPU.

the

DECODER

H>

e

gur

Figure

MASK

CONTROL

4-6

IC6. The

of

4-7

shows

LATCH

^>

OR

return signals

the block

diagram in IC6.

from the

yo-Y7

INT

NMT

keyboard

pass through

TOW

00H

DO-07

IORD

BUFFER

<-

>

X0-X7

4-9

IV-11.

The cassette

Write

Transmits

goes to

Cassette Interface Circuit

interface

Circuit

data output

cassette

a

Read Circuit

The signal input

circuit consisting

is

I/O Remote

As

Then, TR2 is

recorder to

in bit of 53H.

Circuit

result

a

of

switched

operate.

writing

circuit

is subdivided

into throe sections:

through the CTD terminal of IC6. The output voltage

recorder's MICjack.

from the earphone jack

of IC14. The signal is converted

"1"

data

When

bit 7

ofl/O

cassette

of the

into bit of I/O port 54H. the CRY signal is

into a

port 5JH

recorder

digital signal

on and relay RE1 is energized, closing the

+5V

level is

is

"H". the RXC clock outputs from the CTD terminal.

passes

relay contacts. This

through C12, and then is input to the comparator

is

and

sent to the CRD terminal of IC6. The control

DID

RLS73

reduced by R 14 and R 15. The data

RE1

level.

drive

motor of the cassette

TO CASSETTE

changed to H

causes the

+5V

CN4

REM1

RE2

RDATA

Figure

4-8

RiS 220

2

GND GND

TDATA

4-10

IV-12. The

The

the 8-bit parallel data is sent to the

As

The CPU

with the 8-bit parallel data. After

Then, CPU sends the next 8-bit

passing through the /BSYB signal of

transmission of print data to the

Printer control I/O is

Printer Interface Circuit

printer

BUSY

soon as

interface circuit conforms to

signal from the printer is read

the printer receives the /PSTB

then

waits for

while until this BUSY

a

in 30H, 31H and 32H.

printer.

completion of

parallel data.

printer

Centronics

standards. Figure

from the BUSY signal of IC6.

signal, the BUSY signal changes to

signal

becomes

the

one

If the printer is ON

However, when the

IC6.

is inhibited by the CPU.

"L". The printer

character printing,

LINE, the

printer

4-9

shows the

If the condition is not busy (BUSY

printer interface circuit.

H, indicating that the printer

prints the

the printer sets the BUSY signal to

one

character

/BUSY signal is H and sent

is

LINE, the /BUSY

OFF

=

is busy.

corresponding

the CPU,

to

signal

is L, and

"L"),

"L".

D21

TO PRINTER

flD3

Figure

4-11

4-9

IV-13. Serial

Figure

Serial

4-10

data for

Interface Circuit

shows

block diagram of the

a

the Tandy

WP-2

conversion on data characters

during the operation. Status

performed

Figure

CLOCK RESET

Mcs

TOHB

ToSfl

by the UART, as well as any

4-10

shows the pin layout

serial

controlled

is

received

information

definitions of UART.

by

from the CPU. The CPU can read

reported includes the type and

error

interface.

UART(^PD7 1051) and

conditions (parity,

overrun,

+5V

The UART(IC9)

IC5.

the complete status of the

condition of the transfer

or framing).

performs

serial-to-parallel

UART at any time

operations being

Figure

4-10

IC9-]

C16-19.

CN6

56-71

R&4.

39-45

4-12

IV-14.

The system unit has a 12 mm buzzer. The buzzer driver is capable

Buzzer Control

Circuit

of about

0. 1 watts

of power.

If bit 1

of I/O

port

52H

becomes "H," then the BEEP of IC6 becomes "H" and the buzzer rings. The buzzer sounds by repeated switching of

the buzzer

for

driving

sounding the

transistor. This is caused by H,L,H,L,.. output signals from the BEEP synchronized with the frequency

buzzer.

+5V

DAN202K

BZi

2SC2412K-

Figure

IV-15.

LCD Controller

CPU interface

The CPU interface circuit

Data Bus (D0-D7), Address Bus

of the MSM6255 is shown in Figure

(A0-A15),

/LCDCS, /IORD,

CPU and MSM6255.

When

the DIEN signal is "H", LCDC accesses the main RAM. The

signal is "L."

4-11

4-

12.

/IOWR,

and DIEN

accesses

CPU

serve

as the interface

main RAM when the DIEN

the

icj, a

TfliJ-lfr

H2C. C14.

vfki

CM5

21. 62. 6i

15

72-31

TO LCO

between the

PU4EL

Figure

4-13

4-12

IV-16.

The

unit, and

The supply

The

PCB. The

+

This is a

Power

system

DC power supply has

supplies power

provides

unit takes approximately 50

—

8VDC

-

is used for powering the Electronic

15VDC level

5VDC Output

one-transistor

shows the principle

When

(a)

the power is

transformer.

With

this current,

Supply

an

approximately 1.2 watt, 3 Voltage-level

for the system unit,

to

(Vb) is

+/—

VI(B +

induced to the base winding, then Tr

160mA +5VDC

is used for LCD

Voltage

Circuit

self-excited DC/DC converter,

of the

circuit,

supplied

voltage

and

12mA -8VDC

5%,

to 140

mA of

Industries Association (EI

bias.

Tr turns on and

),

IC Card.

+5VDC.

which

regulator.

/-

+

10% and 10mA -15VDC

drivers

A)

is called R.C.C. (Ringing Choke

current

(Ic)

flows

immediately

It is integrated into the system

for communications in the main

through the primary winding

reaches saturation.

+/-

Converter).

10% at

Figure

6VDC.

4-13

the

of

(b) Tr can no longer maintain

magnetic energy stored in

When

(c)

The operation

Block

the energy stored in the

However,

above

1

2

3

Tr turns

actions are repeated.

of the blocks of the +5V

The

block

voltage controller,

This switching This

transformer

on immediately

operates like a boot-up resister

and shut-down circuit, and the

transistor

generates +5VDC,

r*

saturation.

the

transformer, and the voltage is sent

operates like a transistor

-o

lo

Therefore, Tr is turned off

transformer

with the base

Power

is discharged, the output

voltage

Supply circuit is as follows. (Refer

Rs

in Figure

—

8VDC,

WO "-VS-VD

and

r^?^

immediately.

to

output

current (ID) diminishes and reaches zero.

Vb which is

4-13.

block controls TR30.

in Figure

-15VDC

induced

The block is made

4-13.

output

-w=r

voltage

Then

Vo

through the diode D.

Vo is created by the

from the primary winding, and the

Figure

to

voltages.

4-14.)

of

boot-up circuit,

a

D

output

ID=0

lH_

Fig.

i?

4-13

4-14

oj r^ r\j en ro i fu

**

cr

a ^ oj

K-QlSlCCCJ_l>^tntQ

^«

<h

£i

ro-

Figure.

4-I5

4-14

IV-17.

Software calls are

ROM

The

combination

RUN

The

the

Driver or Filter

(Sample of program)

This

Software

supplied on

PROGRAMS

applications

FILES

on the ROM IC

of

'FT

RUN FILE can be

file. The return to FILES

such

program can

Calls

MEMORY

'7,'

and

execute on

The

executed

is

as

handler of key scan.

a

CARD

CARD can be

return to the

from FILES.

designed by the

system.

WP-2

the

(ROM

executed

IC CARD) or files.

WORDPROCESSOR.

from

WORDPROCESSOR is designed by

type or

combination

application can be

Execute

it by pressing the key

application side. This

Execute

application side,

the

of 'F2'

it by

and

kept in

pressing

L

7"

after

memory as

the key

selecting

a

ON-ROM

CLS

GETCH

PUTCH

BKSP

IF ON-ROWI

ORG

ELSE

ORG

WP-2 cannot handle

The

sample program

in the

of a

as the

program

following the ID header

ADDRESS OF

EQU EQU EQU EQU

EQU 08H

4000H

DB PI'

DW

DB 15

DB

START

DW

0AC00H-8

DB

DW DW

PR*

PRGEND-PRGTOP+1

START

DW

a RUN FILE

above.

ENTRY.

LOCATED

The

011EH

0103H

01A3H

unless

it

ADDRESS in the

the area beginning

into

FLAG OF

ENTRY OF

TO GET KEY

TO DISPLAY

CODE OF

HEADER OF ROM

ID

RESERVED

BANK OF

ADDRESS OF

RESERVED

HEADER

ID

OF

SIZE

ADDRESS

LOCATED

has an identification

ID

"AC0OH" and

at

COMPILER

TO CLEAR

BIOS

BACK SPACE

APPLICATIONS

ENTRY

OF RUN FILES

PROGRAM

ENTRY

OF

ADDRESS

header. The

header is

format

"0000H." The

places

LCD

(HERE IS

for

the control

0)

this

WP-2

on the

header

ID

reads the main

address

shown

is as

part

designated

are times when a

There

and ADDRESS OF

accordingly.

WP-2 handles

The

FILE.

loader.

The

the WP-2 does not

Also,

loaded

ENTRY in a SUB

contents of the ID

only certain RUN

RUN FILE reads SUB

have

RUN

FILE'S ID header are

RUN

header

a

for the SUB RUN

FILEs; therefore, a user

program loader for

FILEs and

determined by

FILEs

cannot

RUN FILEs; the

SUB

4-ld

allows

different

are

execute a

them to

the

SUB

root RUN

LOCATED

The

run.

FILE

from those of a

FILE

without a root

must

RUN FILE

and are

RUN

root

have

ADDRESS

registered

FILE.

RUN

program

a

ENDIF

PRGTOP;

START:

IF

ON-ROM

FT SP

ENDIF

The RETURN

Driver

a

or

DISPLAY:

PRGEND:

CALL CALL LD

BIT

JR

CP

RET

XOR

RET

WITH

Filter, register

FLAG

CALL

JR

CLS

GETCH

A,H

0,L

Z.DISPLAY

BKSP

/

A

mean*;

"A" must

that program

be set

to FF.

PUTCH

START

area is

:

;

TOP

OF PROGRAM

PROGRAM

CLEAR

GET

IF EXIT'

RETURN

returned

INDICATE

TRY

END

THE

THE DATA

AGAIN.

OF PROGRAM

BEGINS

SCREEN

KEYS

TO WP-2

WITH

to the

system.

ONE

FROM

ARE

FLAG

CONSOLE

PRESSED.

SYSTEM.

If it

needs

CHARACTER

HERE

to keep

the program

as

END

You

can get the

program

burn the

XMODEM,

IV-18.

Software

MEMORY

The

RAM

from

bank

All

system's

in bank

14.

into a

ROM

program

Of course,

MAP

DISK

to

bank

4

applications

From bank

hex

file to

or RAM

into the

and

is assigned

7. Each

15

compile the

IC CARD

ROM.

you must

Hardware

to

the I/O port

bank begins

are included

to bank

source

for

If the

program

convert

the

Memory

from bank

at

in the

MAIN

30 is the area

program

the

file to binary

WP-2

is a

such as the

to

RUN

Map

address 8000.

ROM.

of IC card

operate it.

FILE,

data.

to bank 3.

and ends

It begins at

ROM

one shown

If

it is better if

The

at address

address 0000

above.

the program

MEMORY

FFFF.

in

APPLICATIONS.

However,

is

a ROM

you transfer

CARD is

bank 0. and

Bank

control

you need to

record

APPLICATION,

the program through

assigned

ends

I/O is

to the

I/O

at address

in port 51H.

the

you

port

7FFF

4-17

DETAILS OF PROGRAM

Bank Address

[ROM] body of programs

0000-2

3FF

2400-2BFF

2COO-2FFF

3000-

1

14

[RAM] :

—

-73FF

7400-

-7FFF

work

area

80O0-833F(

8340-8344

8345

8348

834B 834E

8351

8354

8357-98FF

+

512

BIOS jump

Character

Interface

table, and

font

set

function of dictionary, and handler

of

WORDPROCESSOR

Dictionary

+

SPELLER work area

32O)

Hook table of SPELLER Hook

BIOS

Editor (word processor) work area

for TIMER interrupt

table

for key scan into timer int. for character out to console for debugger for external interrupt

RS-232C receive

for

work

area

Contents

program of BIOS

interrupt

8357 8358

835A

835C

835E-83DD

83FF

8403

Cursor's line (Y) position Cursor's column (X) position

Pointer to

Pointer to get the code from

store

the key code

Key buffer

First

Second byte (data)

Value

Console

(status

byte

bit : F2 key status bit I : Fl key

bit 2 : Ctrl key

bit 3 : Shift (right) key

bit 4 ;

:

5

bit

:

6

bit

7 : 0:Normal/1:above mode

bit

Data of

of counting the timer int.

controller status

bit : cursor brink ON/OFF

bit 1 : type of cursor

bit 2 : brink Enable/Disable

bit 3 : character

bit)

Shift

(left) key

Caps lock

On/Off

0:GRPH/1:CODE mode

key code. If mode is GRPH or CODE,

attribute

buffer

this

data

is

added

at 20H.

840D

840F

8411-8510

Pointer to Pointer

Receive

First byte (status bit)

store

the

get the data from buffer

to

data bufTer

bit : Flag, 0:no

receive data

data/l:data

4-18

bit 5 : Flaming error bit 6 : bit 7 : Parity cheek

Overrun

Second byte (data)

Receive

Data

error

— — —

HANDLER OF

To handle

Refer to hook

1)

Initialize the TIMER

2)

Power Switch status is checked and handled.

3)

Control

4)

Control the LOW BACK UP indication.

5)

Auto

6)

Refer to hook table

7)

Handle the key scan.

&)

If you

Handler as

that

jump

ignore the handler of the

to

9900-A7FF LCD

A800-ABFF

ACOO-FFFF

TIMER

TIMER interrupt, the

the

table of

the LOW BATTERY

Power

want

is, the entry address of the handler

Off control

to change the Key Scan Handler of the

RUN FILE PROGRAM. The

a

INTERRUPT

timer interrupt.

device.

of key

Stack

APPLICATION work area

following must

indication.

scan.

command is written into the first byte. The

WP-2.

(VRAM area)

area

(Data of

done.

be

WP-2 to another handier, you

initialize

written from the second byte in

is

routine must rewrite the hook

instruction 'POP' must be

document, file or paste

need to

hook table, and the

the

included

in the handler routine

design the

table to hook the other

buffer)

other

instruction

Key

handler;

code for

a dummy

as

Scan

HOOK

TABLE OF

To refer the hook

set

to

instruction 'RST 28H' to the

the

DEBUGGER

of the Debugger, execute the

tabie

address

of the

instruction

pointer.

break

4-19

'RST 28H\ It

will

be

by the BREAK

used

function

IV-19.

Connection

IC Card

Names

1 GND

2 /DET

3 CE2

4

5

6 DO 7 Dl

s

9 D3

10 D4

11 D5

12

13

14 GND

15 NC

16 NC

17

18 A16

19

20

21 A13

22

23 All

24 A10

25

26 A8

27 A7

28 A6

29 30

31

32

33

34 AO 35 36 NC 37 BCHK 38

Symbol

/CE1

/OE

D2

D6 D7

A17

A15

A14

A12

A9

A5

A4 A3

A2

Al

R/W

VDD

Symbol

A0-A17

D0-D7

/CE1

CE2

R/W

Pin Name

Address Input

Data

Chip Enable Input 1 Chip Enable Input 2

Read/Write Control

/OE Chip

/DET Card

BCHK Battery

VDD

GND

NC

Operation Modes

Mode

Write

Read L

Standby H

Standby

Output

Disable

Note: Hi-z means

Power

Ground

Connection

No

/CE1

CE2 /OE

L

*

L

high-impedance.

Input/Output

Voltage

+ 5V)

(

Input

Check

Enable

Detect

R/W

H

*

H L H

* * *

L

* *

H H H

*:

L

H

Input

D0-D7 Power

IN

Out

Hi-Z Standby Hi-Z Standby

Hi-Z

L

or

Active

Note

/

DET

Signal

RAM Card: GND

ROM Card: NC

4-20

RAM CARD

Maximum Ratings

Symbol Parameter

VDD Power Supply Voltage

VIN Input Voltage

VOUT

TSTG Storage Temperature

TOPR Operating Temperature

Recommended

Dc

Symbol Parameter

VDD Power

VIH1

VIL1 Input Low Voltage

VIH2

VIL2 Input Low Voltage

DC Characteristics (Ta

Symbol Parameter Condition

ILI

ILO

IOH

IOL

IDDO

IDDS1

IDDS2

Output Voltage

Operating Conditions (Ta

Supply

Input High

Input High Voltage (A15-A17,/CEl,CE2,/OE,R/W)

Voltage

{A0-A14,

(A0-A14,

D0-D7)

DO D7)

(A15-A17,/CEl,CE2,/OE,R/W)

=

0-

+

Input Current

Output Leakage

Current

Output High Current Output

Operating Current

VDD

Battery Leakage

Current at Standby

Low

Current

Standby Current 64 KByte

VDD=4.75-5.5

60°C,

O^VIN^VDD

=0V

VIN

=

VIN

/CE1=VIH

VOH

/CE1

VDD (A 1 5- A 1 7,/CE 1

=

2.4V

=

VOL

32 KByte

128 KByte A0-A14

32

64 KByte VDD

128

BCHK

32 KByte

64 KByte All pins are open.

128 KByte (Ta

0.4V

=

KByte CE2=-0V

KByte

=

—

+

60°C)

V)

(A0-A14)

(A 1 5-A17./CE 1

=

VIL

or CE2

and

CE2

VIL

=

(CE2,A15-A17=0V

(/CEl,/OE,R/W)

=

0V-VDD,BCHK

=

D0-D7

and

0V-VDD

or

=

0-3V, All Inputs

Outputs

Open

=

25°C)

,CE2,/OE,R/W)

,CE2,/OE,R/

or /OE

VIH tRC

=

Open

=

or Open)

0V

or Open)

=

<Ta

25*C)

=0V-VDD

VIH

200nS

=

W)

Open

Rating

0-7

Unit

V

0-VDD V 0-VDD V

20-

+60

0-

+60

Min. Typ. Max. Unit

4.75 5.0

2.2

4.0

-

—

- —

Min. Max. Unit

10 10 juA

-1

40 60 /iA

-10

-I

2

-

—

-

"C °c

5.5

VDD

0.8 V

VDD

1.0

1

+

10

_

-

70

25 mA

50/iA

100

1.4

2.8

5.6

1.4 jxA

2.8 (jlA

5.6

V

V V

fj,A

fxA

mA

fxA

ftA /xA

/xA

fxA

4-21

Characteristics

AC

Cycle

Read

(Ta

=

0-60°C,

VDD

-4.75V

-

5.5V)

Symbol

tRC Read

tACC

tCO

Parameter

Cycle Time

Address

Access

/CE1 Access

(OK /OE Access

tCOE

tOEE

tOD

tODO

tOH

Write

Cycle

Symbol

iWC

1WP

tCW

tAS

tWR

tODW R/W

tOEW

tDS

tDH

Chip Enable

Output Enable to

Chip Enable (/CE1.CE2)

Output Enable to

Output Data Hold

Controlled

(R/W

Parameter

Write Cycle Time Write Pulse

Chip Selection to

Address Set-up

Write Recovery

Output High-Z

to

R/W to

Data

Output Low-Z

Set-up Time

Hold Time

Time

</CEl,CE2) to

Output

Time

Write)

Width

End

of

Time

Output

in Low-Z

to Output in

in High-Z

Write

in Low-Z

High-Z

Min.

250

- —

-

35

15

-

30

Min.

250

90

180

40 20

20 40

35

Max.

-

250 250

100

-

145 ns

85

—

Max.

90

Unit

IIS

ns

IIS

ns

IIS

ns

Unit

ns ns ns ns

ns ns ns

ns ns

Write

Cycle (/CE1

Symbol

twe

tWP

tCW

tAS

tWR

Parameter

Write Cycle Time

Write Pulse

Chip Selection to

Address

Write Recovery Time

tDS Data

tDH Data

AC Test

Output Load

Input Pulse

Timing

Conditions

Level

Measurement

Measurement (Output)

Controlled

Width

Time

Set-up

Set-up Time

Time

Hold

(Input)

Write)

End of Write

30pF+lTTL Gate

0.4V/3.0V

0.4V/VDD-0. 5 V (A 1 5-A1 7./CE 1

0.8V/2.2V

I.5V/1.5V

(A0-A14.D0-D7)

Min.

250

90

150

40

85

25

15

,CE2./OE.R/

Max.

W)

Unit

lis

ns ns

lis

ns

4-22

TIMING

READ CYCLE

WAVEFORMS

tRC

WRITE

ADDRESS

CE2

CE1

OE

zx

WMM

^^sy

M

Dout

CYCLE (R/W

l

CONTROLLED

IaCC

tcoe

Figure

WRITE)

tco

t0E

TOEE

4-15. Timing Chart

twc

X

toH

too

MZMMMl

too

Mfflmm

tODO

(OUTPUT DATA VALID)

M^

ADDRESS

R/W

CE2

CE1

DOUT

Din

X

tAS

im

w/////////////

X

toDW

:u)

Figure

twp

tcv

Ids

DATA IN STABLE

X

4-16,

Timing

X

twR

/'

^\\\\\\\\\\\W

////////////////A

toEW

(3)]

tDH

K

Chart

4-23

WRITE

CYCLE

(/CE1

CONTROLLED

WRITE)

twc

ADDRESS

R/W

CE2

CE1

DOUT

Din

zx

.1*3

^^M

WMM/

w

tcoe

Figure 4-17.

X

twp

tew

toDW

DATA

tos

IN

Timing

-

ywm,

fwR

///////////////////,

s

/

tDH

STABLE

K

Chart

NOTE:

1. R/W

2.

Assuming

output

3.

Assuming

output

4.

Assuming

is

for

remains

that

remains

that

Read

that

/CEI

in a

/OE is high

cycle.

Low

in

a

high-impedance

High

high-impedance

transition

for

Write

or

CE2 High

state.

or

CE2 Low

state.

cycle,

transition

output is

occurs

in a

high-impedance

coincident

with

state

with

or

prior

during this

after R/W

to R/W

period.

Low

transition,

High transition,

4-24

Retention Characteristics (Ta

Dala

=

-

0"C

60°C)

Symbol Parameter

VDH Data Retention Supply Voltage

i

IDDS2 Battery Leakage Current at Standby

tVR VDD

tVF

tBSET Battery Back-up Set-up Time

iBRCV

Rising Time

VDD Falling Time

Battery Back-up

Recovery

Time

Condition

32 KByte Ta

64 KByte

128 KByte (NOTE.l)

KByte Ta

32

KByte VDD

64

KByte

128

=

25°C

=

VDD

=

25'C

=

(NOTE.2)

3V

Min. Max. Unit

2.3 5.5

-

1.4

-

2.8 /iA

-

5.6 /iA

-

1.4 /jlA

-

2.8

-

5.6 juA

20

V

l±A

fj.A

ins

20 ms

-

50

ms

-

ms

NOTE.l: CE2

=

0V

or Open,

VDD

=

0V-3V, All Inputs

NOTE.2: All pins are open. NOTE. NOTE.

3:

During

4: RAM

this

Card

period,

must

it is possible

inserted or removed while CE2 is in

be

to

NOTE.5: RAM Card must not be inserted or

Figure

insert

removed

4-18.

Timing Chart

Outputs

and

remove a RAM Card.

or

low

while VDD is supplied.

a

=0V-VDD

or in high impedance.

BCHK

=

Operi.

4-25

ROM

Card

Maximum

Symbol

VDD

VIN

VI/O

TSTG

TOPR

Operating

Pin Name

Mode

Output

Standby

Read

Ratings

Parameter

Power

Input Voltage

Input/Output

Storage

Operating

Mode

Read

Deselect

Operation

DC Recommended

Symbol

V1H

VIL

VCC

Parameter

Input

VCC

Supply Voltage

Voltage

Temperature

Operating

High Voltage

Conditions

Low Voltage

Power Supply

Voltage

/CE1

L

1.

/OE VDD

L 5V

H 5V

*

Min.

2.2

-0.3

4.75

5V

Typ.

5.0

Rating Unit

-0.6-

+7.0

-

20

60

0-60

D0-D7

Data

Out IDDO

Hi-Z

Max.

+

VDD

1.0

0.8

5.25

V

V V

"C °c

Power

IDDO

IDDS

Unit

V V

V

DC

Characteristics

Symbol

ILI

IDDO

IDDS

VOH

VOL

ILO

Parameter

Input Current

Operating

Standby Current

Output Output Output

Current

High Voltage

Low

Voltage

Leak Current

=

VIN

0-VDD

/CE1=0V

=

Iout

/CE1

0mA

=

VIH

f=5MHz

f=lMHz

/CEI=VDD-0.2V

IOH=-400^A

=

IOL

2.1mA

=

Vout

0.4V-

VCC

2.4

±10 )j.A

40

10

1

100

-

0.4

±10

mA

MA

V

fiA

4-26

AC Read Characteristics

Symbol

tACC

tCE

tOE /OE Access Time

tDF]

tDF2

lOH Output

Parameter Min. Max. Unit Address Access Time

/CE1 Access Time

/CE1 to Output in High-Z

to Output in

/OE

Data Hold Time

AC Test Condition

Output Load

Input

Pulse

Rise and Fall Times

Input Pulse

Timing

Capacitance

Symbol Parameter

crN

COUT

Levels

Measurement Reference

Input

Capacitance

Output

Capacitance

High-Z

Level

(VIN=0V)

(VOUT

=

0V)

-

—

- o

1 TTL

10ns Max.

0.45V

Input 0.8V/2.2V

Output 0.8V/2.2V

to

and

lOOpF

2.4V

250 ns 250 ns

100

90 ns

90

-

Min. Typ. Max. Unit

__

5

10

20

ns

lis

F

P

F

P

This parameter is

AO

CE

OE

DO--D7

periodically

—

A16

sampled and not 100% tested.

\

MMJ

M^mc

HIGH-Z

Figure

tACC

tee

tOE

4-19.

DATA

Timing Chart

:<

tOH

MMMl

TDF£

OUTPUT

)^

HIGH-Z

4-27

OUTLINE DRAWING

(FRONT

SIDE)

UNIT: mm

Printed

4 R3

face/

38pin

y

54-0.

15

2

R0.5

r

*

.2-0.15

3

v

-

1pin

SPREAD

DRAWING

Connector

OF

CONNECTOR

-&

38pin Index

SIDE

(Dent)X^-

46

54-Q.

.99°'1

is

1.27X37).

1

.27

UNIT; mm

«i&

Figure

4-20.

IC

Card

4-28

Dimensions

V.

TROUBLESHOOTING

START

5-1

V-l. Will not start

Check if the protection switch

is ON.

Check if a

at pin 23

power is

Check clock

at Pin 79

high level is available

of

IC1 (/RESET) after

turned on.

5.5296MHz

signal output

of

IC5.

the

Turn ON

and

push power

Check

SW1.

protect switch

switch.

Cll,

IC6,

R5, D9, R6

and

Check the signal

IC1

OPD70008).

Check Pin 49

RDMCE r HOH

signal.

Check IC5, IC6, IC7, IC8

and the

circuitry.

entire peripheral

fron

of

IC5

select

END

C

Check IC5, XI,

5-2

R2,

C7 and C8.

V-II

DC/DC

Converter

Check

©

Check

Battery

AC

adapter

Check

+5V, -8V,

Check

input

; 6,4

:

the

voltage

5,0

: 6

output

DC/DC

-

5.5V

-

4,av

-

9V

voltage

-15V.

converter.

(Alkaline)

(Ni-Cd)

DC

Check

or

Check

the

AC

adapter.

batteries

the TR30.

( E ND

J

5-3

MEMORY

Check

000

Which

Check the power supply voltage

at Pin 20

Check the power supply

at Pin 28

Power ON

OFF : 3,0V

Check

ROMCE

address

jbnoriial?^

of

IC2.C+5V)

of

IC8.

:

+5V

-

Normal?

IYES

Pin 16/49 of IC5

/ HUE signal at ROM.

isS

7FFF

voltage

2.3V

NO

?

~

FFFF

Check battery for RAM.

the back-up

Check IC5.

Check if the low pulse available

at

Pin 20 of IC8(RAK).

YES

©

is

Check

and ZD1.

TB21, R29, R28

5-4

e

Check Pin 27

WKm

Check

signal.

WmSE

256type 257type

of IC8

22 of IC8

signal

high

Check

IC5.

Check

entire

circuitry.

IC5

peripheral

END

-

8 and

Check

256type

257type

Check

jumper

256

257

IC5.

256,

257

5-5

LCD

Check Pin

CCUCS

Check

LCD

(High

(Low

Signal.

pulse

Pin 5 of

POWER

pulse is

Check

A. CN5

B. CN5

C. CN5

41

of IC 7

is

output

CN5

signal.

output

the

Pin 4 Pin 2 Pin 1

Normal?

LCD

from

Pin 31

[YES

from

reference

+5V

-15V

NO

Pin 30

voltage,

~

0V

of

IC6.)

Check

IC6.

Check

IC8 VRAH

IC7

Check pin

LCDC

11

and C6.

of IC5(XT)

Check TR16,

and VR1.

TR14, TR15,

5-b

R21, R2G,

R63, R62

1

e

Check

CN5 Pin 11

the waveform

Normal?

Replace the

LCD unit.

-

fYES

YES

END

14.

_n_n_

NO

YES

Check Pin

LCD

\^

Check

of IC7.

-

33

36 of IC7.

unit failure.

23, 24, 26,

y

27

LCD unit

No display^-^ML

at all?

YES

Check that the

connector is properly

connected

the LCD

Check

drive

that

waveform is

Change LCD unit.

END

normal.

Check

power

supply voltages.

5-7

Keyboard

buffer

©

Check

cable

Check

at

Check

CN2 Pin 6-8,

if

is

the INT

Pin 76

Replace

keyboard

the

of IC5.

waveform

keyboard

loose.

signal

the

unit.

-

12

16.

Check

Keyboard

1

IC5 and

failure.

IC1.

unit

Check

Normal?

["YES

-

11

of

IC6,

END

12,

14

NO

24,

-

D8 and Pin

~

25

29 of IC6.

Check Dl

-

20

-

19

5-8

BUZZER

check

Distorted wave

Check if connector

CN7

is loose.

Check if Sub-PCB

is not connected.

Check the collector

of TR

1.

Cw]

Check R3, D9

and TR

1.

Q

Check the mode

of Buzzer (+5V).

Check TRl:Base.

Low?

Tno

Check TR1, R3

and 09.

YES

\Buzzer failurey>

Check

Pin 3 of IC6.

R4 and

YES

Check cable of Buzzer

Nornal?

NO

Check Sub-PCB.

Check

CN7.

END

5-9

IC

Card

Check

if IC

inserted

Check Pin

card

into

3 and 38

is securely

CN1.

of

CN1.

Check

CN1.

ICS.

Check IC5.

5-10

Expansion

RAM

8

EXP RAM

Check

if

IS1.

OFF:

Check

signal at

into

power supply

3.0V

Pin 22 of

: Signal

ON

OFF:

inserted

Check the

voltage at Pins

of

Power ON : +5V

(CE1

Power

is securely

IS1.

32 and 30

~

2.3V

IS1

RAM)

EXP

High level

Check the

battery

Check IC4

back-up

and IC 15.

and Rl.

Check

of IS1.

Replace

C

Pin 24 and

Normal?

1YES

RAM.

EXP

END

NO

29

Check IC5.

|

5-11

Printer

©

Check

and cable

the

Check

signal

TR11 :

approximately

the connector

printer CN3,

the

(Printer

collector.

Check

Pins

and TR3

the data line

43

connected to

STB

strobe)

10

s

^

~

50 of IC6

-

TRIO.

A=J

Check TR11

and

51 of IC6.

Check

and

C

Normal?

Busy signal

Pin42

of IC6.

END

YES

NO

TR12

1

Check

TR3

Check IC6 and

IC6 and

-

TRIO.

TR12.

5-12

RS-232C

©

a low

Is

at Pin 11 of IC9?

Check Pin 21 of IC9

RESET

Check

\

Check

at Pin

pulse

signal.

the transmission

the CIS

17 of

Low?

available

NO

ES

signal

IC9.

side.

Check IC6,

Check IC5.

y

Check the Pin 22 of

YES

DSff

IC9.

®

signal

Check

(CTS

Check

(OSR signal)

IC10

signal)

IC10.

5-13

©

Check the transmission

data

(TXD)

at Pin 19 of IC9.

Reception side check ,N

<f

Check the

at Pin 23 of IC9.

Check the

data(RXD)

at Pin 2 of CN6.

RTS

signal

reception

Check

(TXD

Check IC11.

(RTS

Check the connectors

and cable for RS-232C.

IC11.

signal)

Check IC10 and IC11.

END

C

5-14

Cassette

Control

Check

cable

©

cassette

if

is loose.

<^Writ ing

Check

to

Pin37

Signal?

YES

Exchange

cable.

Check

and

cassRtte,

of IC6.

NO

cassette

between

RE1.

of

Pin3

Connected?^

ES

>

Check

and

Pin6

[Check TR2,

R14,

IC6.

R15

and REk]

DIP

\Reading

Check Pin4

from

Cassette.

of CN4.

YES

/

Check

and

the

cable.

connector

Check

CN4.

END

C

Check

of IC14.

5-15

if

Pin6

_

VES

©

n n

Check C12,

-

R13,

R8

C13.

Check

OUTPUT

7

signal.

of

IC14

Check

END

IC6.

Check

IC14,R7

and

Rll.

5-16

VI. EXPLODED VIEW/PARTS LIST

VI-l.

Exploded View

©-— P2

I

pi

P5

Figure

6-1.

Exploded View

6-

APS1

VI-2. Electrical Parts

Main PCB Assembly

List

REF.NO.

PCB, Main

Beads

DESCRIPTION

Assy. PCB. Main

BD1-2 BLM41A04 Ferrite Bead Chip

Capacitors

-3

CI

C4-5

C6

C7-8

C9-10

Cll

C12

C13

C14-16

C17-19

C20

C21

C22

C23 C24 C25

C26 C27

C28

C29-30

C31

C32

C33

C34

C35

C36

C37-38 C39-43

Ceramic Ceramic Chip. 0.01/xF Ceramic Chip, 0.1 ^.F

Ceramic Chip. 33pF 50V. ±5%

Ceramic Chip,

Electrolytic. l^F

Ceramic Chip. Ceramic Chip. 470pF Ceramic Chip.

Ceramic Chip, Ceramic Chip, 0.1 ^F

Ceramic Chip,

Ceramic Chip, Ceramic Chip, O.Ol^F

Electrolytic, 10/ttF

Ceramic Chip, Ceramic Chip,

Electrolytic, 1/iF 50V. ±20%

Electrolytic,

Ceramic Chip, 470pF

Ceramic Chip, 2200pF

Film, 4700pF, 50V, ±5%

Electrolytic. %3QpF

Electrolytic, 22^F Electrolytic. Electrolytic, 22/xF 25V, ±20% Electrolytic, 10/aF

Ceramic Chip, 22pF

Chip. O.l^iF 50/25

50/25V,

50/25

/nF

0.1

50V,

±20%

50/25

/uF

0.1

25V,

Q.ljttF

0.01/aF

O.Ol^xF 50/25V, ±10%

Q.lftF

O.lfiF

0.01/xF 50/25V, ±10%

330/i.F 16V. ±20%

47/j.F 25V. ±20%

50/25

50/25V, ±10%

50/25

50/25V,

16V,

±20%

50/25V, +80,

25V,

10V,

25V,

±20%

25V,

±20%

50V,

V,

±5%

V,

±5%

±20%

+20%

+80,

±10%

+80,

+80.

+80,

±10%

-

20%

20%.

20%

RS PART NO. MFR's

30002030

61500160

50300520 50300560 50300520 50300530 50300520

5000140

50300520 50300540

503CX)520

50300560 50300520 50300560 50300520 50300560 50001050 50300520 50300560 50001040 50001060 50300540 50300550 50200100 50001400 50001080 50001090 50001080 50001100 50300580

PART NO.

Connectors

CN1

CN2

CN3 CN5

CN6 CN7

Diodes

Dl-S

D9

D10

D1I

D12 D13

14-1

D

D16

D17

Male, IC Card connector, 38pin

Female, FPC Connector, Female, Female, FPC Connector, 14pin

Male, RS-232C DB-9 Male, SUB-PCB. 5pin

RLS-73, Silicon

PRINTER DB-25pin

DAN202K, Silicon

RLS-73, Silicon

DAN202K. Silicon

RLS-73, Silicon

RB400D,

RLS-73. Silicon

RBI 10C, Schottky

RLS-92, Silicon

Schottky

16pin

30501300

30501310 30501350

30501320 30501340 30501330

40400210 40400220 40400210

40400220

40400210 40400240 40400210 40400250 40400230

6-2

REF.NO.

D18

D19-20

D21

Filters

Fl-2

Ferrite Core

FC1

Integrated Circuits

IC1

IC2 IC4

IC5

IC6

IC7

K3

IC9

(CIO

ICI1

IC12

IC13

IC14

IC15

DESCRIPTION RS PART NO.

RBI IOC. Silicon

RLS-92.

RLS-73,

TH3820B. Four-Terminal Filler Type, Filmac

2643-002402,

D70O08A-6,

D23C2O0OG,

C9(TC4S66F). CMOS

M600

M60O11-O152FP, Gate Array, CMOS

M6255, LCD Controller, CMOS

D43257GLM0L/12L

M5M5256FP-10L/12L

HM62256LFP-8T/10T/125

SRM20256LM-12,

D71051GU,

DS14C89AM. RS232C

DS14C88M, RS232C

HC14. HEX Schmitt-Trigger HC74. D-Flip-Flop, CMOS

2903, Comparator,

T529L, Reset IC

Silicon Silicon

Fernte Core

6MHz, CPU, CMOS

2Mbit, MASK ROM, CMOS

14-01

42FP, Gate Array, CMOS

SRAM,

Serial Controller

Receiver,

Driver,

Linear-IC

COMS

CMOS

Inverter,

CMOS

MFR's PART NO.

40400250 40400230 40400210

61500180

61500190

40000820 42100060 42006010

4tXXX)840

40000850

40<XX>750

42100070 40000870 42000020 42000030 40300410 40300380 41600060 42000040

IC Socket

1S1

Jack

JAC1

Coil Inductors

LI

L2

L3-4

Resistors

K1

(All resistors are 1/10W,

R2

R3

R4

R>

R6

R7

RS-10

Rll R12-13

R14

R15

R16-17

R18-19

R20

R2I

R22

Socket, 32pin

IC

JACK AC

CHKL-01,

SP0406-390k-6, 39^H

LQH3C220K03MOO-01. 22ju.H, 250mA,

47

K ohm

1M ohm

ohm5 1300840

10K

27 K ohm

100K ohm

200 ohm

IK ohm

12K ohm

1M ohm

2.2K ohm

2K ohm

220 ohm

100K ohm

10K ohm

100K ohm

IK ohm

200 ohm

15/xH, 1A

±5%,

Metal Glaze Chip)

Chip

31600050

31000040

61 100080

611Q009O 61100100

51300920 51300960

51300880

300930

5 1

51300740

51300790

5 1 300850

51300960 51300820

51300810

51300750

51300930

300840

5 1

51300930

300790

1

5

300740

5 1

b-3

rf:f.no.

23-24

R

R25 200 ohm

R26-27

R28

R29 R30 R32

R33-34

R35 620K

R36

R37 R38 R39

R40

R41-42 39K. ohm

R43

R44

DESCRIPTION

10OK ohm

10K ohm

510 ohm

4.7K ohm

30K ohm

620 ohm

100K ohm

ohm

100K ohm

15K ohm

100K ohm

10K ohm

100K ohm

10K ohm

ohm

330K

R45 100K ohm

R46 10K ohm

R47 18K ohm R48 100K

R49

R50-52

R53-54

R55

R56

R57 820K

ohm

47K ohm

10K ohm

4.7K ohm

IK ohm

470 ohm

ohm

R58 15K ohm

R59 10 R60

R61

R62

R63

ohm

10K ohm IK ohm

33K ohm 20K ohm

R64 IK ohm

R66-R81 IK

ohm

PART NO.

RS

MFR's

51300930 51300740 51300840 51300770 51300830

5 1 300890

51300780 51300930

5 1 300950

51300930 51300860 51300930 51300840 51300930 51300910

5

300840

1

51300940 51300930 51300840 51301050 51300930

300920

5 1

300840

5 1

51300830 51300790 51300760 51301410 51300860 51300730 51300840

51300790

51300970

51300870

51300790

300790

5 1

PART NO.

Resistor

Networks:

RA1-2

RA3

RA4-5

RA6

Relay

RE1

Switches

SW1

SW2 SW3

Transformer

T1

Transistors

TR1

TR2-13

resistor networks arc

100K ohm

10K ohm

100K ohm

10K ohm

24V

DC. 1A

X

g

X

8

HKW0614-01-010, Reset

KMC-V01AV, Power

SSF-022Z,

Protect

1/8W,

8

5

Switch

CHKT-01. Transformer DC/DC

2SC2412K,

DTC114EK,

NPN type

NPN type (Dcgitra)

-5%

Converter

6-4

51500570 51500400 51500610

500400

5 1

32200020

31200570

31200560 31200580

61200320

41000230 41000250

REF.NO.

TR14

TR15

TR16-18

TR19

TR20-22

TR23

TR24

TR25

TR26

TR27-28

TR29

TR30

TR31

Potentiometer

VR1

Trimmer Resistor

VR2

DESCRIPTION

2SAI037K. PNP type

2SC2412K, NPN type

DTC114EK. NPN type (Degitra)

2SA1037K,

2SC2412K,

DTA114EK, PNP type

2SC2412K,

2SA1037K, PNP type

DTC114EK, NPN type

2SC2412K,

2SA1037K.

2SC3518K-Z,

DTA114EK,

100K ohm,

5K ohm,

PNP type

NPN type NPN type

type

NPN

PNP type

type

NPN

PNP type

1/10W, ±30%

1/10W, Chip

(Degitra)

PART NO.

RS

MFR's PART NO.

40800130

41000230 41000250 40800130 41000230 40800140 41000230 40800130 41000250 41000230 40800130

41000240 40800140

51400100

51400110

Wire

UL1007,

Ceramic Resonator

XI

Zener Diodes

ZD1-3

TR-64,

ZD4

X

24

1

AWG

5.53MHz

MZK4B/RLZJ3.9A

MZK7A/RLZ6.8C

GREEN

WIRE-GREEN

60400250

62000260

40500420

40500490

6-5

LCD Unit

REF.NO. DESCRIPTION

Capacitors

LC1-6

LCB

LCbl-5

LCP6

Connector

Electro!ytic,4.7 jiF,35V Electrolytic,4.7 jrF,35V

Not used

Electrolytic.4.7

^F,35V

LCN1 Female, FPC, 14pin

Integrated Circuits

LIC1-6

LIC7

LIC8

LIC9

Transistors

LQ1-2

Resisters

LR1-2

LR3

LR4-5

LRh

M5299/M5299A,

M5298B/M5298A,

2902M/UPC324G/BA 1 0324F/AN 1 324NS, OP-

Amplifier

E5021

Kohm.

PNP

1/8W,

type

2SA1235,

7.5 Kohm, 1/8W, ±1%. Metal Glaze Chip

39 Kohm,

7.5

100 ohm,

Common

Segment

Driver

±2%. Metal Glaze Chip

±1%. Mela! Glaze Chip

±2%,

Metal Glaze Chip

RS PART NO. MFR's PART NO.

50001140 50001140

50001140

30501420

40000970 40000960

41600070 42000090

408(H) 180

51300980

300990

5 1

51300980 51300100

6-6

Mechanical and

Assembly Parts

REI.NO.

PI

P2

BC1

P3

P4 P6

PS

P7 P8 P9

P10

P11

P12

APS I

P13

P14

PI7 PCB. SUB

P15

PI

HWK1

PI

9

PI

P20

P21

P22

BATT-I Battery,

BZ-1 Buzzer,

CN4-ASSY CN7-ASSY

FFC-1

DESCRIPTION

Top. Black

Case,

Power

Assembly,

Stand

Cover, Battery, Cover. Battery. Backup.

Label

Shield

Insulator, PCB. MAIN

Knob,

Assembly. PCB, SUB

Spring

Main Hard

Connector.

Connector. PCB SUB. 5-pin

Cable.

Key, Blue

Case. Bottom

Bottom, Black

Case,

Foot, Rubber,

Strap.

Removal, Battery-

International

Plate, PCB. MAIN

Contrast, Black

Backup Electrode, Backup Electrode,

Electrode. Negative

electrode. Positive

kit

Ware

Screw,

1.7

Screw, Tapping Btp Screw, Tapping Screw, Screw,

Pan Head,

X

3.5

Tapping Btp 2.6 Tapping Btp 2.6

Lithium.

CB-12H

Female.

Flexible Flat LCD

KEYBOARD Keyboard U.S.A

Assy. Assy.

Case

Display. LCD

MAIN

PCB,

LCD

PCB, MAIN

S.C-1 Slip

Black

Main. Black

Black

Keyboard

Negative

Positive

Ware kit, M

Hard

X

2.6

Btp 2.6

5

X X

5

X

8

CR2430

Cassettee Din. 8-pin

14-pin

List

12

QTY

4

5

2

PART NO. MFR's

RS

10000980

20404950

10400420

25000070

11900150 11900130

130

71101

32600070 3320O020 20200210 30002390

32300130

32300140

10

30000

9

90000710

90000700 90000400

9

1 700040

90000590 30900240 31100140

32300120 60500540 60200800

23400030 32500040 30002030 72800140

PART NO-

f>-7

Keyboard Unit

RKF.NO. DESCRIPTION QTY RS PART NO. MFR's PART NO.

KI Frame 1 20100130

K2 Membrane 1 30101820 KJ Metal Plate

1

23600230

K5 Guide Chip/Contact Rubber 62 20500070

K6 Click Rubber for Standard

ops

Key!

K7

Click

Rubber

for

Space

Keytops

K8 Spring 2 K9 Crank Guide for Enter Keytop 1

K10 Crank Shaft for Enter Keytop 1

K11 Crank Shaft for Shift Keytop 1

K12 K13

KI4

Crank

Tape 2

Screw

Shaft

for Space Keytop

61 22500050

1

22500060

21900780 24600070 22900090

22900100

1

22900110

23700160

15

90000720

6-8

REF.NO. DESCRIPTION QTY RS

KEY TOPS

K15

Set, Keytops

PART

NO.

MFR's PART NO.

22700270

KPQ-1

KPQ-2

KPQ-3

KPQ-4

KPQ-5

KPQ-6

KPQ-7

KPQ-8

KPQ-9

KPQ-10

KPQ-lt

KPQ-1

Ke

T

°P

y

Key Top

Top

Key

Key Top

Top

Key

Key Top fc~

Top

Key

Key Top

Top

Key

Key Top

(IT)

HH

fcl

Q

[jj

[f]

[f~

[»~~|

£j

(£]

j^]

}

;

KPQ-1

KPQ-20

KPQ-2

KPQ-22

KPQ-23

KPQ 24

KPQ-25

KPQ-26

Key Top

Top

Key

Key Top

Top

Key

Key Top

-

|

Q

Q Q

|

Q

D

;

|

KPQ-27

KPQ-28

Key Top

El

6-9

REF.NO. DESCRIPTION QIY

I

KPQ-29

Key Top

E«tt'

1

RS PART

NO.

MFR's

PART NO.

KPQ-30

KPQ-31

KPQ-32

KPQ-33

KPQ-34

KPQ-35

KPQ-36

KPQ-37

KPQ-38

KPQ-39

KPQ-40

KPQ-41

KPQ-42

Top

Key

Key Top

Key

Top

Key Top

....

A

*

5

D

1

"

1

I

1

KPQ-43

KPQ-44

KPQ-45

KPQ-46

KPQ-47

KPQ-48

KPQ-49

KQP-50

KPQ-51

KPQ-52

KPQ-53

KPQ-54

Key Top,

left

Key Top

Key

Top

Key Top

right

[

Sh.t,

Sh.il

Q

1

6-10

REF.NO.

DESCRIPTION

QTY

RS

PART

NO.

MFR's

PART NO.

KPQ-55

KPQ-56

KPQ-57

KPQ-58

KPQ-59

KPQ-60

K.PQ-61

KPQ-62

Key Top

Top

Key

Space

Top

Key

Top

Key

Top

Key

Top

Key

key

[<-°<*

*"*

Pg On

Up

I

6-11

VII.

PCB

VIEWS

VIM.

Main PCB

Top

View

Figure

7-1.

Main PCB Top View

7-1

VII-2.

Main

PCB

Bottom View

Figure

7-2.

Main

7-2

PCB Bottom

View

VII-3. LCD PCB

View

^ill

BUM

iiiiiiiii.

Smri

iiiiiiniii

1

;

r3

Figure

iiiiiiiiiiiiiiiiiniit

iiiiiiniii

to

7-3.

rl

%

LCD

=i

PCB

View

7-3

VIII. CIRCUIT DIAGRAMS

VIII-l. Main PCB

Circuit

Diagrams

CPU

PART

c

o.ijj

+5V

.£

RFSH-

CLOCK- RESET-

INT-

_NHI-

WAIT.

+5V

RA4

100K*5

MERQ

PUP

ICi

JJPD7000BA

1

26

25

23

12

13

21

11

17

33

39

VCC

VSS

RFSH

CLOCK RESET

IFFf

NRI

WAIT

R5

WR

TORQ

MERQ

BUSRQ

NC NC NC NC

AO Al A2 A3

A4

A5

AB A7

A8

A9

AiO

All A12

A13 A14 A15

DO Dl

D2 D3 D4 D5 D6 D7

HALT

BUSAK

Ml

27 26 29

30

31 32 34 35

36

37

3B

40 41

42 43 44

10

8

14

20

24

RA1

100KK8

AO Al

A2

A3

A4

A5 A6

A7

AS A9

AIO

AH

A12 A13 A14 A15

_+5V.

A0-A7 AB-A15

DO Dl

D2

D3

D4

D5 D6 D7

AO.

Ali A2,

A3

A4 A5 A6 A7

AS

A9

AIO All

A12 A13

R0A14 R0A15

ROA

16

R0A17

RA2

100K*B

+5V

IC2

JUPD23C2000E1

ROMCE

MRD

3if

51

50 49 48

47 45

44 43

42 41

40

38 37 35

C2

"fcu~^

20 21

AO VCC no Al

ni

A2 D2 A3 nn

A4 D4

A5 m

A6

Dfi

A7

D7

AB

NC A9 NC AIO

NC All

NC

A12 NC

A13 NC A14 NC A15 NC A16 NC A17 NC

NC CE NC

RD NC

NC

52"

24"

56"

VSS

32

10

TT

IB" IB"

30~~

54~

TT"

IS"

14

15"

TT

m

23

25 27 28

29

36

39

52~

RA3

10K*B

ADDRESS

BUS

D0-D7

,

DO Dl D2

D3 D4

D5

D6

D7

AO Al

A2 A3 A4 A5 A6 A7

AB A9

AIO All

A12 A13 A14

RAA15-

RAA16 _

DATA

BUS

+BACK

IS 1

OPTrON

RAM

SOCKET

12

TT

TO

"37

"SB

"53"

25

S

28

31

OPR*MCS-

C3

t

lu

AO

Al

A2 A3 A4

A5 A6

A7 A8

A9

AIO

All

A12 A13 A14 A15

A1B

32

?CC~

DO

Dl

D2 D3

D4 D5 D6

D7

CE2/VCC

CE1

m

WR

VSS

13

TT

T5~

TT

TB"

T9"

25" 2T~

30

22

24

29

-=-

+BACK^

O.OImF

DO

D2

03 D4 D5 D6

D7

+BACK

RAMRD RAMWR

Rl

+BACK

J

47K

+5V

1

3

SC14S66F

IC4

ICI.

2,

4

Rl

Cl-3. 5

RA1-4

IS 1

8-1

GATE ARRAY 1 & IC CARD

IC5

R2

RA5

CB-9

XI

CN1 BD1

F2

8-2

GATE ARRAY 2

IC6,

14

TR1-13. 31

Dl-10. 21

03-19

C10-13

HA6

RE1

CN2-4. 7

BZ1 SW1

TO KEYBOARD

*5V

IC6

SATE ARRAY 2

ADDRESS BUS

AO Al

A2 A3

A4

A5 A6

A7

A15

DATA BUS

+5V

RA6

10K*8

CN2

TTTTTTTT

xo XI

X2 X3 X4 X5 X6 X7

YO Yl

Y2 Y3 Y4 Y5 YB Y7

10

11

DS

*

D7

12

"DB"

13

14

D4

D5

15

D3

16

15T

Dl

CN7

+5V D9

OAN202K

BZ1

i

i-

1/2

R3

10K

Dl-DB

RLS-73

BATTST

LCD POWER

TR1

2SC2412K.

53

54

55

~§6

57 58 59 60

61

DO,-

BJ

DO

Dl,

64

Dl

D2i

BB

n?

D3i

69

D3

E?

7

ni

D5..

71

p.5

D6,

:

72

nfi

n?

74

n7

11

12 14 15 16 17 16 19

20

21

23

24

26 £7 28 29

10

30

-o o-

SW1

D9 1/2

DAN202K

R6

200

CONT

AO

Al

A2 A3

A4

A5 A6

A7

A 15

XO

XI

X2

X3

X4 X5 X6 X7

YO

Yl

Y2

Y3

Y4 Y5 Y6 Y7

OPTO

LCDP

+5V

13

C£

52

O.lu

ZL

D10

RLS73

VCC

PWS

33

POFF

34

7

ICST

LCDC

31

50HB

77

53CS

78

51CS

6

75

IORD

IOWR

76

BCD

9

HXC

8

CRY CRD CTD

NC NC NC NC NC NC

PDO

PD1

PD2 PD3 PD4 PD5 PD6 PD7

STB

NC NC NC NC NC NC NC

DTC114EK

i\_

35 36 37

22

25 38 39

40

50 49

48 47

46 45 44 43

51

62 65 66 67 73 79

80

POWER

SW

POWER

OFF

RE1

K

TO

CASSETTE

CN4

+5V

R16 T

T

R17

100K 5

5

100K

DTC114EK h\

Tflll

TR12

DTC114EK

TR13

DTC114EK

R18

10K

R19

10K

"IT

13

PDO PD1

PD2 PD3

PD4 PD5

PD6 PD7

H*-

1

D21

RLS-73

TO PRINTER

STB

BUSY

L

BUSY

17

*B~

19

£0~

21

22

ar

24

25

BD3

8-3

LCDC

DATA flUS

ADDRESS BUS

R-DATA BUS

+

BACK

IC8

256K S-RAM

«t

0.1,

2B

VBD

VRAMWE

DO AO Dl

Al

D2

A2

03

A3

D4 A4

D5 A5

D6

A6

D7

A7

AB A9

A10

All

CE

A12

OE A13 WE

A14

vss

10

tar

5T"

2T

ZT

2

£5"

AO

Ai

A2 A3 A4

A5 A6

A7

AB

A9

A10

Ail

A12 A13

A14 A15

14

RDO

RD1

RD2 RD3 RD4

RDS RD6

RD7

IC7

MSM6255

22

21 20

19 IB

17 16 15 14 13 12

11

10

53

,54

55 56

57

58

59

60

AO

Al

A2

A3 A4 A5 A6

A7 A8

A9

A10

All

A12 A13

A14

A15

RDO RD1 RD2

RDS

RD4 RDS

RD6

RD7

80

79

78

77 76 75 74

73,

72

71

MAO

MAI

MA2 MAS

MA4

MA5 MA6 MA7

MAB

MA9 MA 10

MA11

MA12 MA13

MA14

MA

15

+5V

2&r

O.ImF

—

32

VDD

DO Dl

D2 D3 D4 D5 D6 D7

UDO UDi UD2

UD3

FRP

FRMB

LIP

CLP

CECLK

LDO LD1

LD2 LD3

RAO

RA1

RA2

RA3

CHCLK

BUSY

TEST!

TEST2

45 45"

TT

"39~ "50"

sT

33

3X

"35"

35"

23

27"

2X

2T"

DIV

adT

¥

IT

61

"6T

H

37

6B

tm

70

47T

XT

VSS

DO

Dl

*D2

D3

D4 D5

D6 D7

R72 IK

R73

IK

IK"

R75

R77

R76

R78

IK

R79

TT

IK

R80

IK

+5V

T.

LCD POWER

RB2

33K

R6:

I

^s.

f

VR1

100K

R63

+5V

J

20K

TR15

2SC2412K

IC7, 8

TR14-16

R20, 21. 62.

63. 72-B1

C14. 15

VR1

CN5

14 13 12

11

10

UDO

UDI

UD2 UD3

FRAME

DF

LOAD

CP NC

DISP

OFF

+5V 6ND

-15V

TO LCD

PANEL

2SA1037K

\

-15V

DIEN

39

RESET

44

CS

41

RD

42

WR

43

XT

65 66

DIEN

RESET

LCD

CS

TORO

TowT4

XT

TR14

R21

IK

R20

100K

+5V

J

N

TR16

DTC114EK

Jl

LCD POWER

iK RBI

8-4

RS-232C

+5V

DATA BUS

IC9

JJPD71051G

DO

Dl

D2 03 D4 D5 D6 07

CLOCK

.

RESET

.

AO

51CS

.

IORD

.

Town.

27 28

20

21

12 11

13 10

RCD

«^

O.lu

—

26

DO

Dl

D2

D3 D4

D5 D6

D7

vcc

TXD TXE

TXHOY

TXC

RXD

RXRDY

RXC

19

IT"

TO"

CLK

SYNDET

RESET

C/D

CJS

CS

OSR

RG

RTS

WR OTR

VSS

3

^r

IS

17

22 23 24

TXC

INT1

RXC

+5V

t

+5V

IC10

DS14CS9

i:

.T-

I

14

Tec

%-

O.Olu

1Y 1A

2Y NC 3Y

2A

4Y

NC 3A NC

4A

NC

1

r2"

SND

5~

10

9

13

12

=br

C42

IC11

DS14C88

ii—

*

C41

1C40

C39

IK

R64

IK R66

IK R67 IK R68

22pF

IK R59

13

12

1A

2A

IB

2B

1C

2C

10

GND

_1Y

2Y

3Y

4Y

+V

-V

11

IK

R70

IK R71

+5V

3-

C18

O.Olu

I—

,

CN6

CO

RXD CTS DSR TXD RTS

TJTR

GND

NC

4v

9

OlU

"C45"

RS232C PORT

22pF

C43

C44

IC9-11

C16-19.

39-45

CN6

R64,

66-71

8-5

POWER

CONTROL

+V

R23

100K

R22

--n/v

POWEH

OFF

200

TR17

DTC114EK

+5V

DH 1/2

DAN202K

C20

O.iu

+V

R24

100K

-o

o-

SW2

R25

-^•v

—

200

3

Dil

1/2

.

DAN202K

2 IC12

13fe\_

12

+V

IC13

74HC74

C22

O.lu

74HC14

S Q C

Q

o.oiu

-=

14

5

JAC1

DC JACK

IC12

74HC14

^^M

_5^

IC15

PST529L

CN7

X

DCDC OFF

LI

battery

(CR243O0

TR20

2SC2412K

+5V

T

TR23

3U

DTA114EK

R34

100K

R35

R36

100K

BATTST

LOW back:

R40

100K

R41

39K

+5V

T

620K

TR22

2SC2412K

C25*

R42

'39K

IC12-15

TR17-24

Dll-16

R22-48.

61

C20-27

ZDi. 4 SW2,

3

CN7

JAC1

Fl

1

RLS-73

D1

,

4

R37

—

H-

-LJ

C27

3SS

i

lu/50

|

R39

—

"vs,

—

10K

R38

100K

+5V

IC14

2

<%_

+5V

1

O.Olu

—

D15

*

—

M-

R43

10K

^-

2903

R44

330K

LOW BATT

RLS-73

DC-DC CONVERTER

CONT

+5V

-8V

-15V

8-7

APPENDICIES

A. LCD

Application

1,

specifications shall be applied to

These

Composition

2.

SPECIFICATIONS

Dot

Matrix LCD MODULE

H406OH-YR.

Display type

Dot structure

Driving

Connector

Diagram

Block

method

IC7

yellow mode,

STN,

X

480

1/64 duty Multiplex

IL-FPC-14S-S1L1

HtK>

7lT

o

G

3

i>>

3

o

reflective positive

64 Dot Graphic display

drive

(JAE)

tmK>

IC1

Segment

80

Segment

LCD

(480

IC2

80

x

display

64

" t T i<>

IC6

Segment

sz

dots)

Q

\

a

U-OQ-

Q-IO

Q

Note: This

iuiT'i

Olu

>>»

Qu.

does

not incorporate

any

Figure A-1. Block Diagram

controller.

A-1

I CI

IC7

~

IC6:

MSM5299

J

: MSM5298

3. Mechanical

Specifications

Item

Module size

Effective viewing

Weight

Note: Moduie

Dot

Dimensional

o

T3

area

size

Drawing

li

<W) X

260

218 (W)

Approx. 150

(D) max] does not include

[9.5

o

'

1

CO

1

o o

1

52

X

36

J

X

(H)

9,5

(H)

the connector.

I

n

Dimensions

(D) max

mm mm

g

Unit

(Unit mm)

I

i

I

l

i

1

[

i

If

0.41

-*

I

^0.03

Figure A-2.

i

—

Dot

1

211.17

(480

dots)

Dimensional Drawing

A-2

Electrical

4,

4-1.

Absolute

Specifications

Maximum

Ratings

Supply Supply

Input

Storage

Operating

4-2.

Supply

circuit

Supply

driving

voltage voltage

voltage

Electrical

voltage for

voltage

FRAME

voltage

Input

Current

for logic

for LCD

temperature

Characteristics

Item

for

frequency

H

L

consumption

Item

circuit

driving

Vdd

logic

LCD Vdd

level

^^

Symbol Test

-

Vss

-

Veh

FRAME

f

VtH

VIL

Iss Ta

Vdd

If.e

Vo= Vee

fFRAME=70

condition

-

Vss

=

25°C

-

Vss

-

Vee

Symbol

-

Vdd

-

Vdd

V[N

I :iy.

Tupr

=

5.0V

=

-5.0V

=

-

14.3V

Hz

Min

-

Vss

-

Vee

-0.3

-20

Min

4.5

9.0

—

10%

±

0.8VDD

Vss

—

Max Unit

+ +

Vdd

+

6.0

30.0

+ 0.3

60 40

Typ

5.0

70.0

0.5

2.3

V

V V

J

°c

C

Max

5.5

28.0

Vdd

0.2VDD

2.4

4.7

Remarks

Unit

V

Hz

V

mA

4-3.

Operating

The contrast

Adjust

The

the contrast by

following

Ta=0°C

=

Ta

=

Ta

voltage for LCD

the liquid

of

values

are recommended.

25*C 40°C

driving

crystal

varying Vo as

display

depends

necessary.

*

VoD>Vss>VogVEE

on

viewing

angle, ambient

15.5Vtyp

14.3Vtyp

13.7Vtyp

temperature, and

0°,

=

operating

0°

=

voltage,

etc.

A-3

4-4,

Vo

adjusting

circuit

R1 +R2+ VR

=

~

VDD

VO

777777

=

10~

20kS2

18.7V- 11.7V

Figure

A-3. Vo Adjusting

Circuit

A-4

Interface

5.

5-1. Terminal

Specifications

Assignment

Pin No.

14

Vo

Vee

Vss

Vdd

DISP.

NC (FG)

CP

LOAD

DF

FRAME

D3

1

2

3

4

5

fi

7

8

9

10

-

11

5-2. Relationships

Symbol

OFF

-

DO

of

#1

#2

DATA

—

cm

O

Input

w

O

Operating

Supply

GND

+ 5V (Supply

Low

Hi

No

Shift

Signal

DATA &

A.C.

Start

DATA

Signal

lti

<r

Q Q

Do

D,

Da

D-,

Voltage

level

:

level

connection

: LCD

register clock

latching

for

GOmmmon

signal for

signal of

Input

and LCD

-*

D4. D8,

—

D3, D7,

—

-*

D6, D10

D2. D1. D5,

for LCD

for

voltage

becomes

LCD

operates

LCD

display

each

signal <Fig.

Screen

D12

D11

D9

driving

LCD

logic

for

non-visual.

normally.

pulse for

shift

1 line

driver DATA

driving

cycle

A-4)

Division

Function

circuit)

segment

register

shift signal

(Shift register

id s

p-

r^ r*. r»

* ^ *

a a d

o

D480

D479

D478 D477

driver

a

co

* *

o

cd

a

DATA

signal of

common

driver)

#64

Mill

dots

80

4

Figure A-4.

LCD

A-5

IMIM

Screen

5-3.

Timing

uu

Chart

SO

9a

ia

so

=8=

CM

4fr

5 3

CM

N

h

5

to

CO to

1*

ta

zzt>-a

Eii^a

za

BLbC

tri>a

€Q

6£*a

Sifa

ta

OBfG 9£ta

in

OS

en

* *

CM

3*

*

LD

CO

n

S9ia 991a

L9ia

01

CN

^tfr

CM

it

+

tt

ista S9ia csia

I

1

sea

tt

N

to

tea

LLC SLO

ZLQ

i

sa

ia sa

££*a

»

i

1 !

tt

11

CM

2

St

to

ti-

ro

CD

tt

£ita

i

J

i

1

i

1

S9ia

i9ia

isia

85

est

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t i

sea

isa

iia £ia

sgta

9sa 280

t-ia

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B£t>a t-ita

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t>za

z9ia

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69

59ia

1

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ISO csa

6ia osa Sia

i

i i

i

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ca

ezra

5i.^a

i

t

i

Isia

£9ia t-9ia

esia 9Sia

i

£8a

6iO gza

S9ta t9ia

D9ia

Dsia

i

sea

t?80

9LG

1

i

i i

—

5a

t-a

oa*a

9/*a

i i

i

89 ia

09ia

93 ia

I

i

88a

t>aa

osa

9ta

i

t

a

Q

c

i

"

I

<

a

il

i

O

-

<D<

LL

a

O

*

Q n

2

i

>

<

_i

p

t- i-

^

< <

tt

-i

a

<

o a.

A-6

5-4.

Switching

Characteristics

Vnn 5V ± 10%

Item

CP frequency CP LOAD

DATA

-

DO

LOAD SET

LOAD

DATA HOLD

-*

CP

LOAD

FRAME

FRAME FRAME

LOAD LOAD

RISE & FALL TIME

CP

LOAD RISE &

DF RISE &

pulse

SET UP

-*

D3

CP

UP TIME

«-*

CP TIME

-

D3

DO

-*

FRAME

-*

LOAD TIME

SET UP TIME

-*

LOAD

HOLD TIME

-*

FRAME

—

*

DF DELAY TIME

FALL TIME

TIME

FALL

width

TIME

Symbol

fcp

l-.\

tOSLI

tLSU

tLC,

U

tDHD

tLF tFL

1*1

tvlup

thold (FR>

tLD

t r(CP)

f(CP)

t

r(L)

I t f(L)

[ r(DF) t f(DF)

Conditi

DUTY

on Min

=

50%

— —

—

125

100

125

200

100

300 300

100

Typ

—50

Max Unit

MHz

ns

IIS

lis

ns

300

lis

50

100

ns

5-5.

Input Capacitance

FRAME

DF

LOAD

CP

D3-D0

Signal

Input Capacitance

15 Typ

40 Typ

45 Typ 35 Typ

35 Typ

Unit

F

P

F

P

pF

pF pF

A-7

CP

D ~Dj

LOAD

yo.8V

DD

t

w

X0.8V

tCL

0.8V

DD

t

DSU

Q.2VDD

0.2V

OD

tffCP)

J

\

DD

l

0.8V

02V

-I

/

2V

DD

DHD

Dd\/"

DD

/0.8V

~-

/\

tLSU

DD

tw

^LSU

—

^_

0.8V

7-0.2V

DD

~

tr(CP)

/t-

?^0.8V

^r

\o.2V

DD

OD

DD

t

w

X

t

LC

0.8V

DD

-

FRAME

LOAD

ML)

Figure A-6. Timing Chart

^holdlFR)

l

flL)

DF

Figure

tfiDFI

•hdfi

A-7. Timing Chart

A-8

Tandy WP-2 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual