Sharp AR-5132 Service Manual page 49

3
CPU (IC322) pin signals
Pin Signal
In/Out
No. name
1 RD OUT Data read signal
2 A19 Address signal
3 A18 Address signal
4 A17 Address signal
5 A16 Address signal
Reset signal input from the main body
6 RESET IN
main PWB
7 X2 — CPU clock
8 X1 — CPU clock
9 VSS GND
10 A15 Address signal
11 A14 Address signal
12 A13 Address signal
13 A12 Address signal
14 A11 Address signal
15 A10 Address signal
16 A9 Address signal
17 A8 Address signal
18 AD7 Address data signal
19 AD6 Address data signal
20 AD5 Address data signal
21 AD4 Address data signal
22 AD3 Address data signal
23 AD2 Address data signal
24 VSS GND
25 AD1 Address data signal
26 AD0 Address data signal
27 ASTB OUT Address latch signal
28 P20 — Not used.
29 KI1 IN Key input data
30 KI2 IN Key input data
31 KI3 IN Key input data
32 KI4 IN Key input data
Function
9 – 18
Pin Signal
In/Out
No. name
33 KI5 IN Key input data
34 K16 IN Key input data
35 K10 IN Key input data
36 TXD-OP IN Main communication (serial data output)
37 RXD-OP OUT Main communication (serial data input)
38 CLK OUT LED clock
39 DATA OUT LED data
40 EA — Not used.
41 VDD 5V
42 AUSS For analog port (GND)
43 AVREF For analog port (5V)
44 P75 — Not used.
45 DTR-OP IN Main communication DTR (send enable)
46 P73 — Not used.
Auditor counter presence/absence
47 AUD IN
detection signal
48 PSEL IN Printer key page select signal
49 READY IN Auditor copy enable signal
50 P34 — Not used.
51 LATCH OUT LED latch
52 BZR OUT Buzzer signal
53 BEO OUT LED ON/OFF signal
54 PNC OUT Auditor, count-up signal
55 COPY OUT Auditor, copy state signal
56 CA OUT Auditor, clear all signal
57 DSR-OP OUT Main communication (Send request)
58 CCFT OUT Invertor ON/OFF
59 – 19VREM OUT LCD-19V ON/OFF
60 5VREM OUT LCD 5V ON/OFF
61 LC-RES OUT LCD reset signal
62 P67 — LCD reset signal
63 WAIT OUT WAIT signal
64 WR OUT Write signal (writing)
Function