Sharp DX-AT50H (serv.man17) Service Manual ▷ View online
DX-AT50H
– 62 –
IC PIN FUNCTION DESCRIPTIONS
IC2001 ( PT6553IRQ )
Pin
No.
IN/
OUT
Signal
Name
Function
1
Out
DIMMER Backlight Control
2
Out
P-OFF
Power OFF Signal
3
-
NU
Not Used
4
-
NU
Not Used
5
Out
SEG1
Display Segment
6
Out
SEG2
Display Segment
7
Out
SEG3
Display Segment
8
Out
SEG4
Display Segment
9
Out
SEG5
Display Segment
10
Out
SEG6
Display Segment
11
Out
SEG7
Display Segment
12
Out
SEG8
Display Segment
13
Out
SEG9
Display Segment
14
Out
SEG10
Display Segment
15
Out
SEG11
Display Segment
16
Out
SEG12
Display Segment
17
Out
SEG13
Display Segment
18
Out
SEG14
Display Segment
19
Out
SEG15
Display Segment
20
Out
SEG16
Display Segment
21
Out
SEG17
Display Segment
22
Out
SEG18
Display Segment
23
-
NU
Not Used
24
-
NU
Not Used
25
-
NU
Not Used
26
-
NU
Not Used
27
-
NU
Not Used
28
-
NU
Not Used
29
-
NU
Not Used
30
-
NU
Not Used
31
-
NU
Not Used
32
-
NU
Not Used
33
-
NU
Not Used
34
-
NU
Not Used
35
-
NU
Not Used
36
-
NU
Not Used
37
-
NU
Not Used
38
-
NU
Not Used
39
-
NU
Not Used
40
-
NU
Not Used
41
Out
COM1
Common Terminal 1
42
Out
COM2
Common Terminal 2
43
Out
COM3
Common Terminal 3
44
In
K1
Key Data 1 Input Signal
45
In
K2
Key Data 2 Input Signal
46
In
K3
Key Data 3 Input Signal
47
In
K4
Key Data 4 Input Signal
48
-
NU
Not Used
49
-
NU
Not Used
50
Out
KEY-1
Key Source -1
51
Out
KEY-2
Key Source -2
52
-
NU
Not Used
53
-
NU
Not Used
54
-
NU
Not Used
55
-
NU
Not Used
56
-
VDD
Power
57
-
VDD1
VDD1
58
-
VDD2
VDD2
59
-
VSS
GND
60
In
OSC
Oscillator Input Signal
61
Out FP-DOUT Serial Data Output Signal
62
In
FP-STB
Serial Interface Strobe
63
In
FP-CLK
System Clock
64
In
FP-DIN
Serial Data Output Input
Signal
Signal
Pin
No.
IN/
OUT
Signal
Name
Function
Display
