Sharp Pc-1425 User manual

1.

SPECIFICATIONS

@

Keyboard

layout

®

Model:

@

Arithmetic

capacity:

@

Arithmetic

method:

@

Programming

language:

@

Microprocessor:

@

System

ROM:

@

Memory

capacity:

@Stack:

®

Basic

calculator

functions:

SERVICE

MANUAL

CODE:

00ZPC1425SM/E

mopvEL

PC-1425

sna

POCKET

COMPUTEA

PC-1425

oA

KS

DEG

Sil

th

ann

oo

(stu,

tix)

X4p)

X20)

OF

PC-1425

10

digits

(exponent)

In

order

of

mathematical

expres-

sion

(with

priority

determination

function)

(mantissa)

+

2

digits

BASIC

CMOS

8-bit

CPU

136

Kilobytes

(KB)

System

Area:

Approx.

1.1

kilobytes

(KB)

Data

only

area:

208(B)

Program/Data

area:

6878

(B)

Subroutine:

.........

10

stacks

FOR-NEXT:

.........

5

stacks

Function:

..........

16

stacks

Data

nats

ic

duke

bao

Sees

8

stacks

Fundamental:

Four

math

rules

Functions:

Trigonometric

and

inverse

trigo-

nometric

functions,

logarithmic

and

exponential

functions,

angle

>

am

a

[

=

Cm)

NP

(enter

_}

[EXECUTE

|

®@

Editing

functions:

®

Serial

1/O

functions:

Standards:

Baud

rates:

Data

bits:

Parity

bits:

Stop

bit:

Connectors

used:

Output

signal

level:

Interfacing

signals:

®

Memory

protection:

SHARP

CORPORATION

|

ES

conversion,

square

and

square

root,

sign,

absolute,

integer,

rela-

tional

operators,

logical

opera-

tors.

Horizontal

cursor

control

(BP,

@)

Insertion

(INS)

Deletion

(DEL)

Line

up

and

down

(4,

ft)

Start-stop

transmission

(asynchro-

nous)

system.

Only

half

duplex.

300,

600,

1200

Baud

7

or

8

Bits

Even,

odd,

or

no-parity

1

or

2

Bits

15-pin

connector

(for

external

equipment)

CMOS

level

(4-6

Volts)

Inputs:

RS,

CS,

CD,

PAK

Outputs:

SD,

RS,

RR,

ER,

PRO

Others:

SG,

FG,

VC

Program,

data,

areas

are

backed

up

by

battery

during

power

off.

PC—

1425

@

Display:

@

Auto

power

off:

®

Operating

temperature:

@

Power

Supply:

@®

Power

Consumption:

®

Dimensions:

24

characters

Liquid

Crystal

Display

with

5

x

7

dot

characters.

Character

size:

4.86(H)

x

2.01(W)

mm

Character

pitch:

2.37

(1

dot

space)

mm

Dot

size:

aE

rere

1

T

0.66mm

ITISS

0.37mm

About

1171

minutes

0°C

—

40°C

(32°F

—

104°F)

6V

=

(DC):

Lithium

cells.

Type:

CR-2032

x

2

6.0V

DC

@

0.03W

Approximately

120

hours,

if

opera-

tion

is

executed

continuously

at

an

operating

temperature

of

20°C.

10

minutes

of

program

or

calcu-

lation

execution

and

50

minutes

of

display

time

for

one

hour.

Actual

time

may

vary

slightly

according

to

conditions.

182(W)

x

72(D)

x

16(H)mm.

7-5/23"'(W)

x

2-27/32"(D)

x

5/8”

(H)

,

2.

SYSTEM

CONFIGURATION

CE-126P

PC-1425

CE-201M

(8KB)

CE-202M

(16KB)

CE-203M

(32KB)

CE-210M

(2KB)

CE-211M

(4KB)

CE-212M

(8KB)

CE-2H16M

(16KB)

@

Weight:

@

Accessories:

®

Options:

CE-140P

eee

Approximately

175g

(0.39

Ibs.)

with

cells

and

RAM

card.

Hard

cover,

two

lithium

cells

(built-

in),

keyboard

template,

operation

manual

and

RAM

card

(CE-212M).

Example

CE-124:

Cassette

interface

|

(CE-152,

CE-127R

...)

CE-126P:

Printer/Cassette

interface

CE-210M:

Plugin

card

type

2KB

RAM

CE-211M:

Plug-in

card

type

4KB

RAM

CE-212M:

Plug-in

card

type

8KB

RAM

CE-2H16M:Piug-in

card

type

16KB

RAM

CE-201M:

Plug-in

card

type

8KB

RAM

CE-202M:

Plug-in

card

type

16KB

RAM

CE-203M:

Plug-in

card

type

32KB

RAM

CE-151P:

Color

plotting

printer

CE-140P:

Color

dot

printer

CE-516L:

Connector

cable

for

CE-515P

CE-130T:

RS232C

level

coverter

etc.

Ler

g

CE-130T

Qa

fh

|

¥

sd

[=

S|

ame

=

PET

CE~515P

POWER

CONSUMPTION

Capacity:|

Terminal

voltage:

170mAH

|

About

6.0V

Capacity:|

Terminal

voltage:

50mAH

About

3.0V

416uA,

max.

As

the

above

values

are

observed

under

the

room

tempera-

ture

of

20°C,

it

may

vary

depending

on

environment.

Lithium

battery

type

|

CR-2032

x

2

pes.

aa

Lithium

battery

type.

|

CR-

1616

x

1

pc.

Power

consumed

for

the

PC-1425

under

power

off

|

4

Power

consumed

for

the

PC-

1425

during

displaying

Power

consumed

for

the

PC-1425

during.

arithmetical

operation

im

Power

consumed

for

the

CE-212M

@

How

to

judge

the

life

of

the

battery

PC-1425:

Needs

replacement

when

the

terminal

voltage

drops

below

5.2

volts

(2.6

volts

per

battery

cell).

CE-212M:

Needs

replacement

when

the

terminal

voltage

drops.

below

2.5

volts.

4.

MEMORY

MAP

0000

Bank

3

-2K

4K

8K

16K

32K

PC—1425

5.

CAUTIONS

IN

USING

THE

RAM

CARD

OPTION.

@

The

set

can’t

be

operated

without

using

any

RAM

card.

If

the

power

source

is

turned

to

ON

without

any

RAM

card,

the

lamp

(*)

glows

at

the

right

end

of

the

display.

Insert

an

RAM

card

after

turning

the

power

to

OFF.

@

Such

data

as

variable,

last

answer

memory,

and

inde-

pendent

memory

(CAL

mode)

can

be

left

in

the

card.

@

The

program

and

the

data

are

cancelled

when

the

battery

of

RAM

card

is

changed

(removed).

If

any

im-

portant

program

is

included,

therefore,

it

ts

necessary

to

keep

the

program

ina

take

in

advance.

It

isn’t

possible

to

change

the

battery

of

RAM

card

while

leaving

a

RAM

card

being

mounted

on

the

set.

(CE-210M,

211M, 212M,

2H16M)

@

if

the

reset

switch

is

pushed

without

préssing

the

key,

the

program

and

the

data

in

the

RAM

card

are

cleared.

@

When

the

power

is

turned

to

ON

after

changing

the

battery

of

the

body

and

attaching

a

RAM

card,

the

program

data

in

the

RAM

card

is

cleared.

To

keep

the

data

in

the

RAM

card,

therefore,

take

the

following

procedure.

1)

Turn

the

power

switch

to

OFF

position.

2)

Take

out

the

RAM

card.

3)

Change

the

battery

of

the

body.

4)

Turn

ON

the

power

switch.

5)

Make

sure

that

the

lamp

(*)

is

on

at

the

right

end

of

the

display.

6)

Turn

off

the

power

switch.

7)

Insert

the

RAM

card.

8)

Turn

on

the

power

switch.

For

further

operation,

follow

the

procedure

of

ordinary

use.

6.

CHECK

PROGRAM

@

This

machine

incorporates

the

self-diagnosis

function

shown

in

the

flowchart

of

Fig.

1.

1)

With

or

without

IMB

ROM.

2)

With

or

without

RAM

card.

@

Check

Flow

Auto

power

off

eas

(About

two

minutes)

Power

OFF

indication

Auto

power

off

(About

two

minutes)

Power

OFF

44

*

Normal

operation

Fig.

1

PC—

1425

*Normal

operation

a

7.

LS}

DESCRIPTIONS

\

1.

“O"”

is

displayed

when

the

RAM

card

is

successfully

operating.

|

:

|

=

2.

“MEMORY

ALL

CLEAR

OK?’

is

displayed

when

a

-

fresh

RAM

card

is

used

or

the

contents

of

the

memory

-has

been

destroyed.

Wee

3

In

this

event,

press

the

[ENTER]

key,

_

or

[=]

key

to

clear

the

program

and

data

within

the

RAM

card.

$C61860A

31

microprocessor

signal

description

In/Out

Description

Standby

=

power

off

Address

bus

line.

High

during

standby.

t

Write

clock.

Normally

high.

Low

order

bit

address

latch.

Normally

high.

Clock

used

to

latch

the

low

_

order

8

bits

sent

on

the

data

bus

line

which

is

used

in

sending

16

bits

address

signal

when

using

a

large

capacity

ROM.

oe

Test

pin.

Normally

low.

Oscillator

input.

(768

kHz)

Oscillator

output.

.-

—>—

>

Reset

input.

Reset

when

high

Normally

pulled

down

to

low

level.

Signal

name

_

©

Checking

1/O

Circuit

Mount

CE-126P

onto

11

side

and

connect

15

SIO

circuit

with

UKOGG0089CSZZ

(service

tools

used

for

PC-1350)

between

PC-1425

each

other

for

communi-

cation,

then

check

the

operation.

|

@

SIO

Citcuit

Check

Program

(Test

machine

side)

+

EEEER

ES

Oo

Cc

~

the

above

program

and

by

making

sure

that

the

same

indication

is

repeated

at

both

sides.

®

Connection

diagram

of

cable

connectors

(UKOGGO089-

CSZZ)

Data

input

from

option

unit.

DOUT2

Data

input

from

option

unit.

DIN2

in

SIO

[RD].

Receive

data.

S10

[CS]

.

Detection

of

send

enabled

from

the

other

end.

IB2

Out

SIO

[RS].

Sending

of

send

request

from

this

end.

(buffered

by

gate

alley).

SIO

[CD]

.

Detection

of

a

send

request

from

the

other

end.

30-[

Va

[in|

C68

power

supe

In

Power

supply

(Battery

®

terminal)

LCD

backplate

signal.

High

impedance

during

standby.

4-level

pulse

during

displaying.

|

N

Cassette

tape

recorder

option

signal

{Program

on

the

tested

unit)

(Program

on

the

testing

unit)

input

(MTin).

-

KON

ON

(BREAK]

key

input.

Normally

10:

OPEN

10:

OPEN

pulled

down

to

low

level.

20:

FOR

ies

TO:

227

20:

FOR

ii

ae

Un

©

SR

ey

ek

OUT

Cassette

tape

recorder

option

and

30:B$=CHR$

|

$0:

AS=CHRSE

1

-

buzzer

signal

output

(MTout1).

DIS

i

Heep

eras

ee

LCD

driver

control signal.

.

HA

Out

LCD

driver

clock.

Low

during

standby.

50:

PRINT

#1

B88

50:

INPUT

#18B8

2KHz

pulse

generated

during

display-

60:WAIT!IO:

PRINT

A$

60:WAIT10:

PRINT

BS$

Ing.

-

oe

ae

13

1A8

inf/Out|

Key

signal

input/key

strobe

output

a

ee

a

2 2

2

signal.

Low

during

standby.

Pulse

8O0:CLOSE:GOTO

10

80:CLOSE:GOTOi10

20

1A1

In/Out

generated

when

key

is

pressed.

90:END

21

IB8

Data

In

(DIN)signal.

Serial

data

input

signal

from

the

PCU

(bit

term

serial

(Normal

machine

side)

handshaking).

Normal

operation

of

SIO

circuit

is

checked

by

executing

137

|

_In_|

Data

input

from

option

unit.

DOUT

1B3

iB1

NO

SF

NPT

NTN]

NER

oo

~J

Oo}

Ol]

BB]

GC]

Nh

LCD

power

supply.

LCD

power

supply.

Low

at

all

times.

51

VDC

Out

LCD

power

supply.

|

52

|

VGG

|

!n_

|

Power

supply.

Low

at

all

times.

53

08

In/Out]

Data

bus

line.

Normaily

high

imped-

2

60 O1

In/Out

Fc

nicl

(iol

eccrine

Hall

Micah

Re

leenicania

|)

50

|

vec

|

in

ance.

Data

bus

line.

Normally

high

imped-

ance.

PC—

1425

8)

S10

[ER]

and

FO1

buffered

signal

which

goes

high

with

OPEN

command.

cS

Signal

In/Out

Description

Standby

=

power

off

name

|

Out

|

Memory

chip

enable.

FO4

Out

SIO

[SD].

Transmit

data.

(buffered

by

gate

alley).

FOS

BUSY

signal.

Interface

output

port.

O

Out

SIO

[RR]

.

Sending

of

receive

enabled

from

this

end.

(buffered

by

gate

alley)

Out

St!O

[ER].

Goes

high

by

the

execu-

tion

of

OPEN

command.

Low

during

stand

by

(buffered

by

gate

alley)

ut

~

Out

‘Data

output

to

option

unit

Data

output

to

option

unit

8

N

f=?)

B

ml

NO

This

LSt

chip

is

used

to

decode

various

LSI

(RAM,

DISP)

chip

select

signals

and

to

buffer

SIO

output

signals.

O

ba

a

—

*

P-type

open

drain

output

12

S/

.292K32

Gate

Array

Chip

Signal

Description

ASD

Al4

a

9

Acknowledge

signal.

Enable

the

I/O

Al2

decoder

(PCU)

to

read

data

from

the

CPU.

All

Out

Japan/Export

version

selection

signal

A10

line

SIO

[RS]

output

from

the

CPU

for

send

request,

which

is

buffered

in

the

gate

array.

C$1

ymbol

af

55

cS3Nn

Or

|

OQ

joo

EE

am

ol

Pip>|

2

o|°is

34

A9

CS4N

i

R/W

eaipeee

___4_

yx

OUTS

D6

>=

33

oy

KO7

D5

KO6

bas

zs

ae

zs

KOS

|

L

D3

KO4

D2

a

2

KO8

pip

20

Ko?2

DO

>

KO]

48

EXT4

*

47

Data

EXT3

latch

Ad

EXT2

2k

2

EXT1

*

Write

clock,

normaily

high.

Address

bus

Address

bus

Power

supply

(©)

Address

bus

(

Address

bus

SIO

[ER]

output

from

the

CPU

that

goes

high

with

OPEN

command,

which

is

buffered

in

the

gate

array.

SIO

[RR]

output

from

the

CPU

that

for

receive

enable,

which

is

buffered

in

the

gate

array.

transmit

data.

Memory

enable

07

Out

Key

strobe

output

Ou

a

Out

|.

Key

strobe

output

Out

ROM

A714

signal

~

G)

lz

-|0

eee

ne

N

>

ol

FO1

O

=

—

>

te)

TI NO

04

—

o

a

“Tl

3

~~.

oO

Cc

oo

O05

D3

D2

D1

DO

a

ALA

Hii

tii

=

NEN

EN

Bee

A

O

a)

t

AQ

D2

|

BNK3

t

Data

39

latch

BNK2

28g

BNK1

<a)

~

LALA

O1O|O

OO}

als

G)

2

f

A

O

o

Uf

oO

~

INI

Input

port

NO

|

Go

Zzi2

CS1

,

ROM

A‘15

signai

|

—

|

ROM

A16

signal

Out

S10

[SD]

and

FO4

buffered

transmit

data

Out

SIO[RS]

and

iB2

buffered

send

request

Out

|

SIO

[RR]

and

FO2

buffered

ready

to

receive

;

FOlp—2>—_>—“*—_p

er

FO2

14

43

RR

:

>

15

D>

Ay

>

connector

FO4

p—_-—__>——_

>

sp

N)

~

ww

2i2

A\

A

WW)

N

PC—

1425

$C43536

Desplay

LSI

description

GND

Voc

DIS

HA

|

®

Timing

Dispisy

out

:

Diepley

on

Power

off

(CPU

standby

|

ns

S

qian

el

reNRIGR

SH26

:

TRS

i

:

during

power

off

PAL

ESR.H:

TR2

a

eee

eas

({Latch

clock)

}

:

|

"

ot:

'

>

‘

s

‘<—

:

GND

‘i

QO}\:

“VAH

—

;

-—

ov

.

=

;

Vp

5/5

.

Si}

Van

—>

i

=

-14V

_

i

EI’s

%

Vois

Ypts/5

|

(Display

control

RAM)

al

|

Eee

eaeeae

S11

Os

|

S|

Se

ice

ve

01~8Q)

)

M

O

S

61

ae

OTS

“%

Vos

ay

Ts

O

Si

Va

—

=

-5.6V

ree

Sane)

ee

i

vars

a

Vos

z

-Va_—.

a

~TOV

Rea

d/Wr

|

te

|

NOTE:

Voltage

when

VDIS=7.0

volta

®

Counter

and

segment

waveform

HA

DIS

|

—<$<<§3oo

oo

RES

ee

hiCTRI).

eee!

HOCIRG)

See

HOCTRS),

area

eg

Nn ay

haCIRA)

2eonenteee:

ae

—$—$—

FU

OD

ROCIRG

|

ates

ecu

Hl

H2

H8

H4

H5

H6

H7

H8

Hg

H10

H11

H12

H13

H14:

H1

H2

H3

H4

H5

i

ts

ee

!

Segment

output

waveform

GND=VaAH

—

!

seeee

ee

Re

een

:

Backplate

(H1)

waveform

|

7

VBH

—~>

Segment

waveform

VAL

—~

VML

—>

Ee

APL)

(CEPT

me

ee

Tee

ete

ree

Se

eee

|

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ALMB1030CC2Z2Z

UBSF20P06000

LABH1955CCZZ

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UNT-1093ECZ2Z

CRSZ1063CC2Z2Z

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Sharp PC-1425 User manual

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