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XE-A101 (serv.man6). XEA101 Service Manual (Complete) - Sharp ECR Service Manual (repair manual). Page 8

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4. CPU PORT TABLE
No.
PIN Name
Signal Name
Description
Output/Input
1
P50/A8
RWND
REWIND MOTOR
O
2
P51/A9
DR
To DRAWER
O
3
P52/A10
SA2
DISPLAY SEGMENT
O
4
P53/A11
SB2
DISPLAY SEGMENT
O
5
P54/A12
SC2
DISPLAY SEGMENT
O
6
P55/A13
SD2
DISPLAY SEGMENT
O
7
P56/A14
SE2
DISPLAY SEGMENT
O
8
P57/A15
SF2
DISPLAY SEGMENT
O
9
Vss0
GND
10
Vdd0
VDD
11
P30
ST1-
DISPLAY STROBE  N-Ch O.D.
O
12
P31
ST2-
DISPLAY STROBE  N-Ch O.D.
O
13
P32
ST3-
DISPLAY STROBE  N-Ch O.D.
O
14
P33
ST4-
DISPLAY STROBE  N-Ch O.D.
O
15
P34/SI31
ST5
DISPLAY STROBE (H ACTIVE)
O
16
P35/SO31
NU   
(GND via 56k)
I
17
P36/SCK31-
NU    
(GND via 56k)
I
18
P20/SI30
SA1
DISPLAY SEGMENT
O
19
P21/SO30
SB1
DISPLAY SEGMENT
O
20
P22/SCK30-
SC1
DISPLAY SEGMENT
O
21
P23/RXD0
SD1
DISPLAY SEGMENT
O
22
P24/TXD0
SE1
DISPLAY SEGMENT
O
23
P25/ASCK0
SF1
DISPLAY SEGMENT
O
24
Vdd1
VDD
25
Avss
GND
26
P17/ANI7
VBAT
BATTERY voltage
I
27
P16/ANI6
NU  
RESERVE FOR KEY RETURN
I
28
P15/ANI5
KR6
KEY RETURN
I
29
P14/ANI4
KR5
KEY RETURN
I
30
P13/ANI3
KR4
KEY RETURN
I
31
P12/ANI2
KR3
KEY RETURN
I
32
P11/ANI1
KR2
KEY RETURN
I
33
P10/ANI0
KR1
KEY RETURN
I
34
Avref
VCC
35
Avdd
VDD
36
RESET-
RESET-
37
XT2
XT2
32.768Khz Xtal
38
XT1
XT1
32.768Khz Xtal
39
IC/VPP
GND
40
X2
X2
SYSTEM CLOCK
41
X1
X1
SYSTEM CLOCK
42
Vss1
GND
43
P00/INTP0
/POF
POWER OFF
I
44
P01/INTP1
T
From  PRINTER
I
45
P02/INTP2
t
From  PRINTER
I
46
P03/INTP3/ADTRG
R
From PRINTER
I
47
P70/TI00/TO0
SG1
DISPLAY SEGMENT
O
48
P71/TI01
SDP1
DISPLAY SEGMENT
O
49
P72/TI50/TO50
SG2
DISPLAY SEGMENT
O
50
P73/TI51/TO51
SDP2
DISPLAY SEGMENT
O
51
P74/PCL
NU
O
52
P75/BUZ
BUZ
BUZZER
O
53
P64/RD-
MTR
To PRINTER
O
54
P65/WR-
TRG
To PRINTER
O
55
P66/WAIT-
MSL1
MODEL SELECT1
I
56
P67/ASTB
MSL2
MODEL SELECT2
I
57
P40/AD0
KST1
KEY STROBE
O
58
P41/AD1
KST2
KEY STROBE
O
59
P42/AD2
KST3
KEY STROBE
O
60
P43/AD3
KST4
KEY STROBE
O
61
P44/AD4
KST5
KEY STROBE
O
62
P45/AD5
KST6
KEY STROBE
O
63
P46/AD6
KST7
KEY STROBE
O
64
P47/AD7
KST8
KEY STROBE
O
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