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MICROPROCESSOR (lC-S03) PORT FORMAT
Pin
No.
Symbol
Function
Pin No.
Symbol
Function
1
VCC
+5 V
33
P57
LCD Busy
2
P67
VCO filter 2 Output
34
P56
Low battery Input
3
P66
VCO filter 1 Output
35
P55
Carrier Squelch Input
4
P67
Memory CE Output
36
P54
Key Input
5
P64
Memory R/W Output
37
P53
Key Input
6
P63
Memory OE Output
38
P52
Key Input
7
P62
Memory address 10 (AlO)
39
P51
Key Input
8
P61
Memory address 9 (A9)
40
P50
USA/etc., Cellular Switch
9
P60
Memory address 8 (A8)
41
P17
WFM Output
10
P47
Search Output
42
P16
NFM Output
11
P46
NC
43
P15
AM Output
12
P45
Mute Output
44
P14
RF filter Switch
13
P44
LCD Reset Output
45
P13
RF filter Switch
14
P43
LCD C/O Output
46
012
RF filter Switch
15
P42
LCD CS Output
47
Pll
VCO 2 Output
16
P41
PLL 2 Latch Output
48
PlO
VCO 1 Output
17
P40
PLL 1 Latch Output
49
P07
Memory address 7 (A7)
18
P37/SRDY
5 kHz Step Output
50
P06
Memory address 6 (A6)
19
P36/CLK
Serial Clock Output
51
P05
Memory address 5 (A5)
20
P35/TxD
Serial
Data Output
52
P04
Memory address 4 (A4)
21
P34/RxD
NC
53
P03
Memory address 3 (A3)
22
P33/CNTR
Peep Output
54
P02
Memory address 2 (A2)
23
P32/
INT2
Hold Input
55
POl
Memory address 1 (A 1)
24
P3l
Sound
Squelch
Input
56
POO
Memory address 0 (AO)
25
P30
NC
57
P27
Memory 1/08
26
INT l
+5 V
58
P26
Memory 1/07
27
CNVSS
GND
59
P25
Memory 1/06
28
RESET
Reset Input
60
P24
Memory 1/05
29
XIN
Clock Input
61
P23
Memory 1/04
30
XO
UT
Clock Outpu
t
62
P22
Memory 1/03
3
1
Ij)
Timing Output
63
P21
Memory 1/02
32
VSS
OV
64
P20
Memory 1/0 1
MICROPROCESSOR (lC-S03) FUNCTION TABLE
(1) Outputs of
veo
(P10, P11) and
veo
filter (P66, P67)
Receiving
VCO Output
VCO filter
Frequency
(MHz)
Output
25.0000 to
VCO 1 (PlO)
VCO filter
220.4950
"H
"
1 (P66)
220
.5000
to
VCO 2 (Pll)
"H"
Level
520.0000
"H"
760
.0000 t
o
VCO 1 (PlO)
1052.4950
"H"
VCO
filter
2 (P67)
1052.5000 to
VCO 2 (Pl
1)
"H" Level
1300
.0000
"
H"
(3) Outputs of Search (P47) and 5 kHz Step (P37)
(2) Outputs of RF filter (P12, P13, P14)
Receiving Frequency (MHz)
P12
P13
P14
25.0000
to
39.9950
H
L
L
40.0000 to
67.9950
L
H
L
68.0000
to
107.9950
H
H
L
108.0000
to
173.9950
L
L
H
174.0000
to 279.9950
,H
L
H
280
.0000
to
520.0000
L
H
H
760
.0000
to 1300.0000
H
H
H
Search Output (P47)
5 kHz Step Output
(P37)
.
MANUAL Operation
H
L
PROGRAM Oparation
H
L
SCAN Operatien
H
L
Receiving
Frequency
at 5 kHz Step
L
H
In SEARCH
25 to 520 MHz
at Other Step
L
L
Operatien
Receiving Frequency
at 5 kHz Step
L
H
760 to 1300 MHz
at Other Step
L
L
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