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SEMICONDUCTOR DATA
Microprocessor
:
75308BGK740BE9
(LCD
Assy
IC2)
Terminal connection diagram
P6 1
P62
P63
P70
P7 1
P7 2
P73
RESET
S
0
S
1
S2
S
3
S4
S
5
S
6
S
7
S
8
S 9
S10
Sl
I
ommt-wm*mm-ommt-wm~m~-
wmmmmmmmmmm*********
61 40 PO2
62 39 PO1
63 38
PO0
64 37 P53
65 36 P52
66 35 P5 1
67 34 P50
68 33
Vss
69 32 P43
70 3 1 P 42
7 1 30 P41
7
2
29 P 40
73 28
VLCP
74 27
VLC~
7 5 26
VLCO
76 25
BIAS
77 24 COM3
23 COM2
22 COM
I
80 21 COMO
-Nm*mwt-~~O
-Nm~mwt-mmz------- m
I10
-
0
-
-
-
-
1
-
1
I
1
I
I
-
I
I
I
I
I
I
I
0
Pin Name
P32
P33
--
VDD
XT1
XT2
N C
XI, X2
P60
P6 1
-
P62
P63
P7
0
P7
1
P72
P73
RESET
1
Function
Open (not use).
Serial data output.
+5V.
+5V.
Open (not use).
Open
(not use).
System clock input.
AUX
swltch input.
SCAN
swltch ~npui.
Volume up switch input.
Volurne down switch input.
,
Group up swltch input.
Group down switch input.
System up switch input.
System down
swl 'h input.
System reset
~nput.
LCD output (532-S21).
Function
LCD output (S20-SII.
LCD COMO-COM3 output
LCD power supply voltage.
LCD voltage level generator.
Open (not use).
GND.
Open (not use).
HOOK (PC) ser~al data input.
Open
(not use).
Ser~al data input.
PTT (PC) serial data input.
Open (not use).
Beep output (HI).
~eip output (Med).
I10
0
0
0
-
-
-
-
I
-
I
I
-
0
0
0
-
0
0
Terminal
Pin No.
1-20
21 -24
2 5
26-28
29-32
33
34-37
38
39-41
42
43
4545
46
47
4
8
49
50
51
Pin No.
52
53
/
54
I
55
1
56
57
58, 59
60
61
6 2
63
64
65
66
function
Pin Name
S12-S31
COMO-COM3
BIAS
VLCO-VLCZ
P40-P43
Vss
P50-P53
--
PO0
PO1 -PO3
PI 0
PI 1
P12, PI3
P20
P21
P22
P23
P30
-'
P3
1
Beep output (Lo).
-4-
1'
67
Open (not use).
:
'68
PTT
(PC) serial data output.
HOOK (PC) serial data output.
69-80