35
KEH-1900,1950
-
Pin Functions(PDC045A)
Pin No.
Pin Name
I/O
Function and Operation
1–4
NC
Not used
5–8
KS4-1
O
Key strobe output
9–12
KD4-1
I
Key data input
13
SI
I
Display data input
14
SO
O
Key data output
15
SCK
I/O
Clock input terminal for serial data input and output
16
REMIN
I
Remote control reception
17
RES
I
Reset input
18
TEST
I
Test input
19
OSC-IN
I
System clock input
20
OSC-OUT
O
System clock output
21
GND
GND
22,23
VDD2,1
LCD power supply
24
VDD
Power supply
25–28
COM1-4
O
LCD common signal
29–42
SEG1-14
O
LCD segment signal
43–48
NC
Not used
12
13
24
25
1
*PDC045A
IC's marked by* are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.
Format
Meaning
C
C MOS
19
20
32
33
51
52
64
1
*PE5107A
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9
2
8
9
4
2
9
8
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9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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