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SIGNAL DESCRIPTION
[2 {s2—s«([T2/Sf__|_O |Key scan signal / Segment
[3 |Si___—s*(T1/Sq_|_O [signal for display
4 [so_—[TOSDP_| O |
(es
[_Description
36 1P51——~«([AS/H6
~—[O_ [Address bus for RAM
37 [P52 ——s«[AG/H7_—'|[O_|/ Printer digit select signal
38 [P53
sAZ/HB8 OT
99 [RESET
[RESET [I [ResetSignal
Display digit signal
a)
'ower down signal
fawer open sensor signal
4
jotor signal for printer
ey retum signal (option diode'
iming pulse from printer
ey retum signal
Mode lock, PF ke
ou
8
z ry
aA)
=19
O/INTO
T/INT1
Az
ar o
ao)
a) al
ol
Vs
BIA
A
A
Se
=q
QO
= *0
Pl LT | Jelefofofe|-[---Jajaa[slelol_
lol:
|-| —--lel-
©
2/INT2
CO}
CI—~N
33}
Ci
jy Co]
Pop
Ps)
ead / Write signal for RAM
ddress bus for RAM
/ Printer digit select signal
AM/Printer selection signal
ogo Stamp drive signal
ata bus
ata bus
>
21
A12/H13
=
A
A10/
AQ/H
A8/H9
11
=>
No
= Zz
2
=)—0
oIi—
jr
H
—_
Address bus for RAM
/ Printer digit select signal
10/S15/PH
Ps)
3/BU
El ad ell lc ie a la ole
i
ata bus
T14/S11_ [DRO
ata bus
Key retum signal
Key retum signal
iso_C*(PS.
Key retum signal
s8.sié«*(
TRC SSO
rt
me]
—
Address bus for RAM / Printer
RO
st]
af |
ef
—h fe]
a]
— (1
COIN]
o>)
On
f]G9]Po]—
~
>
pare =
=
Ph
me)
vu
"U/
"0/0
Ul]
UO
& o313]08
5
Ni
Oo
as
/ CE1, CE2
: chip enable input
1/01 ~1/08
: Data input / Output
Vcc. GND
: Power Supply, Ground
OPERATING MODE
Operation
Mode
NS
Se
ook
Re
ee
es
Ee
Co
2
|
(=) [5]
Pel
(=)
fel
fo}
(fol
fod
[+] fod
[m] f+]
[asl
[es]
[5] Ved Te)
(8)
(EJ LS] Le)
[2] 1S) [8] 1S) LS)
SSESSHP
ATER
RAG
a
|
a
=
a
<4
N
-20-
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