•Basic 2KB RAM System area: 0800H - OAFFH User area: OBOOH - OFFFH

•Expansion 2KB RAM (PC-1247 only) Al I open for user area

2000H r------, : : 2KB, expansion

27FFHL-----' (PC-1247 only) ~8 bit-'1

o_sooHI _ I 2KB, basic 10 FF F H '---------'-

SHARP CORPORATION

37FFH I J r-10 bit---i

MAIN ROM 14Kstep

x 10 bit (17Kbytes)

[CPU internal ROM] [External RAM]

OOOOH ....-----~

3.MEMORY MAP

Auto power off time: Approx. 11 minutes Options: CE-124, CE-125, ~E-126P,

CE-152

16-character liquid crystal dis­ play with 5 x 7 dot characters (LF7133E) Character dimensions:

4.5(H) x 2.7(W)mm Character pitch: 3.45 mm 0°C ~ 40°C (32° F ~ 104° F) 6V DC Lithium cells Type: CR-2032 Approx. 1000 hours (Display: 55555555, ambient temperature: 20°C (68°F). The operating time slightly varies depending upon the use of battery.) Battery will last for a period of 2.4 months, assuming the use of one hour a day which consists of 10 minutes of operation or pro­ gram execution and 50 minutes of displaying.

0.07 w 135(W) x 70(D) x 9.5(H )mm 5-5/16"(W) x 2-3/4"(D) x3/8"(H) 95g (with cells) Weight:

Power Consumption: Dimensions:

Operating Time:

Display: ~"'"' 0.01~~ o.~~~

w~.05 0.5

Operating Temperature: Power Supply:

PC-1246 PC-1247

OOZPC1247SM/E

MODEL

CODE

Memory Protection:

Editing Features:

Basic calculations: Addition, substraction multi­ plication, division

Function calculations: Trigonometric and inverse trigonometric functions, loga­ tithmic and exponential func­ tions, angle conversion, square root, interger, absolute, sign operators, tt.

Cursor left and right ( > , < ) r

character insert (INS), character delete (DEL), line up and down (i .t ) Battery backup (the contents of programme and its data are retained at power-off.)

Operators:

10 stacks 5 stacks

16 stacks 8 stacks

Sub-routine: For-NEXT: Function: Data:

Stack:

Programming Language: CPU: System ROM: Memory Capacity:

Calculating System:

10 digits (mantissa) + 2 digits (exponent) Algebric system (with priority judgement function) BASIC 4 bit CMOS 17.4K bytes System Area

About 0.5K bytes Area dedicated to data

208 bytes Program/data area

1278 bytes (PC-1246), 3326 bytes (PC-1247)

Calculating Capacity:

2. SPECIFICATIONS

PRINfUSJM;GOSUBRETIJRN DIM END CSAVECLOAD P...+NP

0 0 ~ 0 ~ ~ ~ D lrnTERI SPC

INPUT ! f 1HEN G01D FOR TO STEP J\'EXT LI ST RUN

0~@.l0@JGJ[TIIBJ(g~

! !I # $ ~ & ? : ' : @J0000~@l[i]@J0

DEG RAD GRAD RUN PRO

SHIFT E I I BUSY p DEF

POWER OFF C=:] ON

ON

~ [I] [I] ~ DEL INS

~ [3J [TI ~

POCKET COMPUTER SHARP

1. KEY LAYOUT

SHARP - PC-1246

SERVICE MANLiAl

-2-

Pin Signal In/Out Function standby= power off No. name

1 V1 In LCD driving power

2 V2 In LCD driving power

3 V3 In LCD driving Power

4 V4 In LCD driving Power

5 V5 Out Expansion RAM chip enable, normally high, (Not used with the PC-1246.)

6 VDD Out LCD drive power, high during standby.

7 GND In Power supply

8 VGG In Power supply, normally low

9 X1 Out System clock oscillation output

10 X2 In System clock oscillation input

11 X3 Out Display clock oscillation output

12 X4 In Display clock oscillation input

13 K1 In Key input, normally low

14 K2 In Key input, normally low

15 K3 In Key input, normally low

16 K4 In Key input, normally low

17 K5 Out (SEL2) Select signal output

18 K6 Out (SEL 1) Select signal output

19 K7 In ACK signal. Enables the 1/0 (PCU) to read data from the CPU.

20 KB In Data in. Serial data input from the PCU (bit-to-bit serial handshake)

21 RESET In Reset input, normally pulled down to low level. Reset when high.

22 Cl In Option cassette tape recorder interface input

23 co Out Option cassette tape recorder interface signal/buzzer signal output

24 R/W Out Write clock, normally high

25 DI01 In/Out Data bus, normally low

I I 2 2

32 DIOB In/Out Data bus, normally low

33 B1 Out Address bus, low during standby. Also, used for peripheral data output port (Dout).

2 2 2 2

43 B11 Out Address bus, low during standby. Also, used for peripheral data output port (Dout).

44 B12 Out Basic RAM chip enable

45 B13 Out Busy interface output port

46 S40 Out LCD segment signal/key strobe, low or high during standby and 4-level pulse during display.

2 ' 2 I 2

85 S1 Out LCD segment signal/key strobe, low or high during stnadby and 4-level pulse during display.

86 H16 Out LCD backplate signal, low or high during standby and 4-level pulse during display.

2 2 2 2

100 H1 Out LCD backplate signal, low or high during standby and 4-level pulse during display.

• CPU signal description

A 100-pin, 4-bit, microprocessor used in this model has a 17KB ROM and display chip within the chip. What it differs from the conventional microprocessor is that it has no iternal RAM but uses an external RAM for execution.

4.CPU(SC61720D03) - PC-1246

PC-1247

-3-

I !PIN CONNECTOR

r= LCD LF7133E

!i~i H,IHIHIHIHIHIH H s s s s s s s Is Is s s11s:ls s slsJs sJs s s s s s s s s s s s s11 s s11 s s s s s11 s s Is 16 I 2 3 4 5 6 7 I 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 2l 28 21 26 25 24 23 22 21 le

~iiii' ,f;',,..

J\1" && tf.: 1%"& d· wlr .JJlk 1'ilil ,.,,

1"1

lit @) *'·• '".dlk i!iii ~ii. :0 .. "'' '""·· .j!; ""'"" '01\i ""'' ,,;(t:lil '"'·:ii! !ll. 10::;

bil eel; cc cc :I U? <D ~ ~ ~ :I-"' ~1" ~l <D ~1 eo gi ~1 ~ 1l"' ~IJJ~ ccr ccr c-i cc r cc cc cc "'"' "'"' cc cc

k Cf'J If) (f) (f) (/) in (/) a: (/) (fJ (fJ (fJ (fJ (fJ (fJ (/) sn in (/) (fJ o: (fJ sn (/) in (/) (/) sn

"---..§_§_ 80 75 70 65 60 55

:~ ~ 00

~ 1·~1 "'~

'-~:2 Ii~ H!6

Hl5

:I H!4 LSI 1 e H!3

iwi Hl2 ~ H 11 CPU(ESR-J)

!~ H 10 H9 H7 SC61720D03 .I H6

"' U?

H5 ~

<~ H4

H3 H2

UI Hl 0 0

l 5 10 15 20 25

>I ~1 :;:I> u:1"' ~ 8 ;< "'1J~ "' co " "'lTIJr 0 ~ l~ > §' c >< >< x "' "' "'"' ~ ~ :::c ~ ~ u u 2 2 2 2 > "' R9 180Kn "' "'"'"'"' "' IU.C'?

Olp~~H~ R7 l.3M!l

'--- R3 > R5 R6 R4 VR R9 XI 1024

KHz 47Kn L6 l.8}\.<l ~~Kn ~~Kn 20Kn HOf-- r l r •

2SAll79 C9 1 1 O. luF

C!O I I O. lpF -'-rcloPF C2 ,_ !OOPF C!l 11 0. lpF c;L1o

0.03 ..... ~E R2 4.7K!l µF ~~

.rom'~ GND C3 ,_

VGG DI o.1pFT

BUSY BIS g2 _ RI ?2ll DAN2Q2

::~~ ~: ~3 tG ~ N202X2

xou co , c,C4 - CR2032 K8 ...:::._ (3VX2=6V) --22pF/

DIN j'. + 6.3V ACK K7 SEL22 K5 RilO RI!

SEL 1 K6 , ;.. GND

Y 3.3Mnx2 ....,

- PC-1246 PC-1247

5. PC-1246 CIRCUIT DIAGRAM

-4-

D4

AB B9 A9 BlO

R/W OE

AlO Bil

CE Bl DS

BS A7 _ C2 _ !OOPF B7 A6

B6 A5 B5 A4 !Cl B4 A3 B3

2KB A2 RAM

B2 Al Bl AO HM6116

Dl D2

D3

VGG

"' ;:; "' §5 gi ;i; cc cc Ul Ul Ul Ul Ul ifJ

65 60 55 51 s 36 0

"' s 37

S40 Bl3 ~ B12

LSI sn B 10

B9 CPU(ESR-J) 0 88

-r B7 B6 85 "' SC61720D03 B4

B3 "' ON cc OFF R8

B2 !Mn POWER Slide SW Bl

DlOS

15 20 25 cc "'..,. - 0 ~ 0 8 ~ ~ ~ ~ u u

"' 0 0 Ml

SSS SSS SSS SSS SSS S SSS SSS SS SH HH HH HH H 30 29 28 27 26 25 24 23 22 21 15 14 13 12 11 10 9 8 7 6 5 4 3 2 l 16 15 14 13 12 11 10 9

s s 35 34

r

z 0 - 1- - (/) 0 a. (/) ...J

'<t z e - (/)

~

(/) l­ a: ~

-7-

3.3Mnx2 11 PIN CONNECTOR

..i.. GND

Rll

,i.,C4 --22pF/

+ 6.3V - CR2032 -=..(3VX2=6V)

C3 ..._ DJ O.lpFT DAN202 I RI 22n ~

MTOUT2<;>----+---1--~

GND) VGG ! >-----11----~

BU5Y\-­ DOUTc)>-----N~20:21--+-+-+-'

XINc)>------~·03_+--'

XOUT)>-------+---' DINX>------~1 ACKrX>-------'1

SEL2 §r ,_ -'1

SELi I

R,2, .4.71\!l D2

N202 'J

Tr2 R14 2SC2812 4. 7K!l

'-~~2 R12 R9 1801\!l

¥1 lOOK!l I ' . IUH~ Buzzer

o.1p~i:H ~ li R5 R6 R4

~ 1 1,8.I<fl W<n ~6.Kn

R3 25Al179 C9 I I 0.1'F R13 47Kn lOOK!l ClO I I O. lpF

c n 11 O. lpF

25 0 0 -1 5 10 15 20 - "" ~r io 0 ~ ,. ;< ""~~-

""= ~ lffi~ > > > > > ~ c: ~ x x x "' "' "' "'"'"'"'"' C) ifi

"' °' '-''>.... R7 l.3M!l

'----- YR! Xl 1024

20K!_l KHz

Hrn- -'-?do PF C2

lOOPF c;Lt 0.03

µF ~E

Hl H2

H6"' H5"' H4

SC61720D03 H7 H9

H 10 Hll CPU ( ESR- J) Hl2 0

"'

H13 LS I 1 H14

Hl5

60 65 70 51::?.; ~ 5:

r-

~ 5:

r- 5,

r­ B ~- ~ ~ B

f- ill r-

0 B: ~­ B' >---- ~ Bl

r­ B·

>---- ~~

..§.: B

E. _D aoco~

55 l~_so 75

' 54 00

r,111~ .{~

'- "----2.!_ ~ Hl6

s sis s s sis s s s s s sis s 5 s s s s s s 5 s s s 5 5 s s l s l s l s l s s 11 12113 14 15 16111 18 19 20 40 39 38137 36 35 34 sa 32 31 so 3J 28 21 26 25 24 23 22 21115114113112 1

LF7133E LCD

- PC-1246 PC-1247

7. PC-1247 CIRCUIT DIAGRAM

8.

-8-

BB A7 GND B7 AG AB B9

BG A9 BIO A5

B5 A4 IC! R/W IC2

B4 A3 2KB 2KB B3 A2 RAM RAM B Al B HMG!IG HMG!l6

AO AO DI D7 Dl D7

D2 D6 D2 DG D3 D5 D3 D5 vcc D4 Vc;c; D4

Bil BIO

B9

~ B8 B7 BG B5 iii B4

B3 "' ec OFF R8 B2 lM!l POWER Slide SW Bl

Dl08

SSSSSSSSSSSSSSSSSSHHHHHHHH 23 22 21 15 14 13 12 ll 10 9 8 7 G 5 4 3 2 l is 15 14 13 12 II IO 9

z 0 - t- - CJ) 0 Q.

CJ) ..J <( z e - CJ)

~

CJ) t­ a:

0 -

>­ ~ o 1-z .... (!) <( a:i

- 11 -

I I I I I I I I

Hl0--------------------1 I H9--------------------_J

Hl6 _] I I : H15·------------_J I I H14 ---------------1 I Hl3---------------_J I Hl2 ----------------_] I Hll ·-----------------_J

59 58 57 56 55 54 53 52-~- 51---

517 518 519 520 540 539 538 537 536 535 534 533 532

531 500 529 528

527 526 525 524 523 5:<2

HW-------------------------, Hl--------------------, I H2 -------------------, I I H3 ·----------------.,.., I I : H4 ----------------, I I I I H5---------------, I I : : I H6--------------1 I I I I I I H7·------------, I I : : I I i 51 ~ 52 I 53 I 54 I 55 56 57 58 59

510 5 ll 512 513 514

1 0. LCD (LF7133E)

9-6. Auto-power-off check Display must not go out within 8 minutes but should go out within 14 minutes.

9-4. At a time of battery replacement After replacement of the battery, turn power on and push the RESET switch.

9-3. RAM capacity check Turn the slide switch ON, push the I MODE I switch to go into the PRO mode. Enter [NJ [EJ [WJ [QJ I ENTER I and [MJ ~ [ENTER] to have the following figure on the displav. PC-1246: 1278 PC-1247: 3326

+ Short or open ON with GND

'\__J ON GND

At the time of on with the slide switch at" ON position 115µA at VGG = -0.6V, maximum

9-2. On current check

DC regulator circuit

+ Short the OFF Pad with B11 pad

GND \___J

OFF Bll

At the time of off with the slide switch at OFF position 7µA at VGG = -6.0V, maximum

9-1. Off current check

- PC-1246 PC-1247

9. CHECK ITEMS AND CAUTIONS

- 12 -

NO. PARTS CODE PRICE NEW PART DESCRIPTION PC1246 PC1247 RANK MARK RANK 1 LPLTP1112CCZZ AA D Ten plate 0 0

TiNSJ4326CCZZ AT N D Instruction book (Japan) 0 2 TiNSG4330CCZZ AK N D Instruction book (G) (Germany) 0 0

TiNSE4328CCZZ AR N D Instruction book (El (Other countries) 0 0 3 TL ST S 1 0 0 6 CC Z Z AA D Service list (Jaoan tvoe onlv) 0 4 SPAKA8990CCZZ AE N D Packing cushion for set 0 0

SPAKC8991CCZZ AD N D Packing case (Japan) 0 5 SPAKC8993CCZZ AD N D Packing case (Other countries) 0

SPAKC082ACCZZ AD N D Packinz case 0

~ Accessory

NO. PARTS CODE PRICE NEW PART DESCRIPTION PC1246 PC1247 RANK MARK RANK 1 PZETL1313CCZZ AA c Spacer (Round) 0 0 2 PZETL1353CCZZ AA c Spacer (Square) 0 3 QCNCW1306CC1B AK c Connector Cl Zoin) 0 0 4 QCNTMl 0 5 lCCZZ AB c Reset terminal 0 0 5 QTANZ1289CCZZ AB c Battery terminal 0 0 6 RC-CZ1021CCZZ AB c Capacitor (0.1 u F) [C3,5,6,9,l 0, 11] 0 0 7 RC-CZ1035CCZZ AC c Capacitor (1 OOpF) [Cl,2] 0 0 8 RC-CZ1037CCZZ AB c Capacitor (O.OluF) [C8] 0 0 9 RC-CZ1047CCZZ AB c Capacitor (0.033uF) [C7] 0 0

10 RC-EZ226BCCOJ AD c Capacitor (6.3WV 22uFl [C4] 0 0 11 RC RM- 1 0 0 1 CC Z Z AF N B Crvstal (1024KHzl [Xl] 0 0 12 RH-DZ1008CCZZ AC B Diode (DAN202) [Dl,2 3] 0 0 13 RH-TX1017CCN1 AB B Transistor (2SA1179) [TRl] 0 0 14 RVR-Z2400QCZZ AF B Variable resistor (20KO) [VR] 0 0 15 VHiHM6116//-C AZ B IC (HM6116) [ICl 2] 0 0 16 VHiSC61720D03 BE N B IC (SC61720D03l [LSll] 0 0 17 VRS-TP2BD105J AA c Resistor (1/8W I.OMO ±5%) [R8] 0 0 18 VRS-TP2BD135J AA c Resistor (1/8W l.3MO ±5%) [R7] 0 0 19 VRS-TP2BD183J AA c Resistor (1/8W 18KO ±5%) [R5,6] 0 0 20 VRS-TP2BD184J AA c Resistor Cl/8W 180KO ±5%) [R9] 0 0 21 VRS-TP2BD220J AA c Resistor (1/8W 220 ±5%) [Rl] 0 0 22 VRS-TP2BD335J AA c Resistor (l/8W 3.3MO ±5%) [Rl0,11] 0 0 23 VRS-TP2BD472J AA c Resistor (1/8W 4.7KO ±5%) [R2 14] 0 0 24 VRS-TP2BD473J AA c Resistor (l/8W 47KO ±5%) [R3] 0 0 25 VRS-TP2BD563J AA c Resistor (l/8W 56KO ±5%) [R4] 0 0 26 RH-TX1012CCZZ AC B Transistor (2SC2812) [TR2] 0 27 VRS-TP2BD104J AA c Resistor (l/8W lOOKO ±5%) [R1213] 0

(Unit)

901 D U N T K 8 2 1 7 C C Z Z BP N g Main PWB unit 0 DUNTK8313CCZZ BS N E Main PWB unit 0

[I] Electronic parts

NO. PARTS CODE PRICE NEW PART DESCRIPTION PC1246 PC1247 RANK MARK RANK 1 XBSSC20P08000 AA c Screw (2X8) 0 0 2 HD EC A 2 0 8 2 CC 2 1 AF N D Bottom panel 0

HDECA2082CC22 AF N D Bottom panel 0 3 PZETL1556CCZZ AA N c Bottom panel sheet 0 0 4 QT ANZ 14 0 6CCZZ AB c Batterv terminal (EB8) 0 0 5 XUSSD20P08000 AA c Screw (2X8) 0 0 6 LCHSS1168CCZZ AE N c Chassis (Japan) 0

LCHSS1168CC01 AE N c Chassis (Other countries) 0 0 7 DUNTK8217CCZZ BP N E Main PWB unit 0

DUNTK8313CCZZ BS N E Main PWB unit 0 8 PGUMS1564CCZZ AB N c Rubber connector 0 0 9 PSPAP1271CCZZ AA N c LCD spacer 0 0

10 VVLLF7133E/-l AR N B LCD 0 0 11 RALMB1030CCZZ AD B Buzzer 0 12 PSLDP1486CCZZ AB N D Display filter 0 0 13 PF i LV1526CCZZ AC N c Polarized filter 0 0 14 PGUMM1559CCZZ AL N B Kev rubber 0 0 15 QCNTM1042CCZZ AA c Slide switch terminal 0 0 16 MSLiP1033CCZZ AB N c Slide switch slider (Japan) 0

MS Li P 1033CC01 AB N c Slide switch slider (Other countries) 0 0 DUNTG8215CCZZ AM N D Top cabinet (Japan) 0

17 DUNTG8216CCZZ AM N D Top cabinet (Other countries) 0 DUNTG8312CCZZ AM N D Top cabinet 0

18 GCASP1099CCZZ AE D Hard case 70ther countries) 0 0 GCASP1099CC02 AH D Hard case (Jaoan) 0

19 TLABH2095CCZZ AC N c Operation label (Japan) 0 TLABH2096CCZZ AC N c Operation label (Other countries) 0 0

20 PTPEH1213CCZZ AB c Ta Pe 0

11. PARTS LIST & GUIDE [I] Exteriors

18

14

- 13 -

19 17

- PC-1246 PC-1247

I ERROR GUIDE

I 1 I I i I I \

' ,\

\

18

8~~~ 9 10 9

7

2

SHARP CORPORATION Industrial Instruments Group Quality & Reliability Control Center Yamatokoriyama, Nara 639-11, Japan

1 984 December Printed in Japan ®

SHARP

- PC-1246 PC-1247