Microprocessor : 75308Bgk740Be9 (Lcd Assy Ic2) - Kenwood TK-940 Service Manual

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
S 4
S 5
S 6
S 7
S 8
S 9
S10
S l
I
o m m t - w m * m m - o m m t - w m ~ m ~ -
w m m m m m m m m m m * * * * * * * * *
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
V L C ~
7 5 26 VLCO
76 25 BIAS
77 24 COM3
23 COM2
22 COM I
80 21 COMO
- N m * m w t - ~ ~ O
- N m ~ m w t - m m z - - - - - - - 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
X I , 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 ~ n p u i .
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).
~ e i p 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
4 5 4 5
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
P I 0
P I 1
P12, P I 3
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