Sharp SF-2052 Serviceanleitung Seite 216

3
CPU (IC411) pin signals
Pin Signal
IN/OUT
No. name
1 RD OUT
2
A19 IN
3
A18 IN
4 A17 IN
5
A16 IN
6
RESET IN
7
X2 —
8
X1 —
9
VSS —
F
A15 IN
G
A14 IN
H
A13 IN
I
A12 IN
J
A11 IN
K A10 IN
L
A9 IN
M
A8 IN
N AD7 IN
O
AD6 IN
P
AD5 IN
Q
AD4 IN
R
AD3 IN
S
AD2 IN
T
VSS —
U
AD1 IN
V
AD0 IN
W
ASTB OUT
X
P20 —
Y
P21 IN
Z
KEYIN IN
[
PNC-a IN
\
P24 —
]
P25 —
Description
Data read signal
NC
NC
Address signal
Address signal
Reset signal input from the main
PWB
CPU clock
CPU clock
GND2
Address signal
Address signal
Address signal
Address signal
Address signal
Address signal
Address signal
Address signal
Address data signal
Address data signal
Address data signal
Address data signal
Address data signal
Address data signal
GND2
Address data signal
Address data signal
Address latch signal
NC
0Cin
Key input data
Personal counter input
NC
NC
Pin Signal
No. name
^ P26
_
DTR_OP
'
TXD-OP
a RXD-OP
b
CLK
c
DATA
d
EA
e
VDD
f
AVSS
g
AVREF
h
AUD
i
READY
j
PD
k P72
l
P71
m
P70
n BE0
o
LATCH
p
P36
q
P37
r
TC
s
COPY
t
CA
u
DSR-OP
v
CCFT
w
–20VREM
é
5VREM
â
LC-RES
ä
P67
à
WAIT
å WR
12 – 13
IN/OUT Description
— NC
DTR_OP main communication
IN
Main communication
IN
OUT Main communication
LED clock
OUT
OUT LED data
— GND2
5V
—
— For analog port (GND2)
For analog port (5V)
IN
Card counter presence sense
IN
signal
Copy enable signal from card
IN
counter
Original detection input
IN
— NC
NC
—
— NC
OUT LED ON/OFF
LED latch
OUT
OUT NC
NC
IN
Counter, card counter count up
OUT
signal
Copy state signal to card counter
OUT
Clear all signal to card counter
OUT
OUT Main communication
Invertor ON/OFF
OUT
LCD –20V ON/OFF
OUT
OUT LCD 5V ON/OFF
LCD controller reset signal
OUT
NC
IN
LCD controller state signal
IN
OUT Data write signal