Kenwood TK-7180 Service Manual page 21

Microprocesser : 30302M8-8Z7GP (Display unit IC902)
Pin No. Port Name I/O
1~4 NC -
5 SHIFT O
6 BYTE -
7 CNVSS -
8,9 NC -
10 RST I
11 Xout O
12 GND -
13 Xin I
14 VCC -
15 NMI -
16 BLC2 O
17 BLC1 O
18 DIMM O
19 LEDG O
20 LEDR O
21 NC -
22 LCDCK O
23 LCDDT O
24 LCDCS O
25 LCDRST O
26 NC -
27 RXD2 I
28 TXD2 O
29 PTT/TXD I/O
30 NC -
31 DM O
32,33 NC -
34 HK/RXD I
35~44 NC -
45 TP1 I
46~59 NC -
60 VCC -
61 NC -
62 VSS -
63~70 NC -
71~82 S22~S11 I
SEMICONDUCTOR DATA
Function
Non-connection
Beat shift
+5V
GND
Non-connection
Reset
14.7456MHz clock output
GND
14.7456MHz clock input
+5V
+5V
MIC backlight control
Key & LCD backlight control
Dimmer control
LED green
LED red
Non-connection
LCD serial clock
LCD serial data
LCD chip select
LCD reset
Non-connection
RXD2 (Main µ-com)
TXD2 (Main µ-com)
PTT/TXD (COM0)
Non-connection
MIC DM
Non-connection
HOOK/RXD (COM0)
Non-connection
LCD check
Non-connection
+5V
Non-connection
GND
Non-connection
Non-connection
Pin No. Port Name I/O
83 S10 I
84 S9 I
85 S8 I
86 S7 I
87 S6 I
88 S5 I
89 S4 I
90 S3 I
91 S2 I
92 S1 I
93 NC -
94 AVSS -
95 NC -
96 VREF -
97 AVCC -
98~100 NC -
Shift Register : BU4094BCFV (TX-RX unit IC403)
Pin No. Port Name I/O
1 STRB I
2 DATA I
3 CLK I
4 Q1 O
5 Q2 O
6 Q3 O
7 Q4 O
8 Vss -
9 Qs O
10 Q's O
11 Q8 O
12 Q7 O
13 Q6 O
14 Q5 O
15 OE I
16 VDD -
TK-7180
Function
Front panel key (R down [ ])
Front panel key (R up [ ])
Front panel key (■ )
Front panel key (C)
Front panel key (B)
Front panel key (A)
Front panel key (S)
Front panel key ( )
Front panel key (L down [ ])
Front panel key (L up [ ])
Non-connection
GND
Non-connection
+5V
+5V
Non-connection
Function
Storage enable input
Serial data input
Serial clock input
AUX output 1
Public address
Horn alert
Scrambler switch
Ceramic filter switch
Non-connection
AUX output 2
Gate switch
Output enable
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