Semiconductor Data - Kenwood TK-290 Service Manual

1. Microprocessor : 784214GC0648EU (TX-RX Unit IC406)
1-1. Terminal function
Pin No. Port name I/O
1 P120/RTP0 O
2 P121/RTP1 O
3 P122/RTP2 O
4 P123/RTP3 O
5 P124/RTP4 O
6 P125/RTP5 I
7 P126/RTP6 I
8 P127/RTP7 O
9 VDD –
10 X2 –
11 X1 –
12 VSS –
13 XT2 –
14 XT1 –
15 RESET –
16 P00/INTP0 I
17 P01/INTP1 I
18 P02/INTP2/NMI I
19 P03/INTP3 I
20 P04/INTP4 I
21 P05/INTP5 I
22 P06/INTP6 I
23 AVDD –
24 AVREF0 –
25 P10/ANI0 I
26 P11/ANI1 I
27 P12/ANI2 I
28 P13/ANI3 I
29 P14/ANI4 I
30 P15/ANI5 I
31 P16/ANI6 I
32 P17/ANI7 I
33 AVSS –
34 P130/ANO0 O
35 P131/ANO1 O
36 AVREF1 –
37 P70/RXD2/SI2 O
38 P71/TXD2/SO2 I
39 P72/ASCK2/SCK2 O
40 P20/RXD1/SI1 I
41 P21/TXD1/SO1 O
42 P22/ASCK1/SCK1 O
43 P23/PCL O
44 P24/BUZ I
45 P25/SI0 O
46 P26/SO0 O
47 P27/SCK0 O
48 P80/A0 –
49 P81/A1 –

SEMICONDUCTOR DATA

Function
Modem FCLR
SB control
D/A converter CS
Modem MSKE (MSK enable)
Modem DIN (DATA/TX DATA)
Model select 1
Model select 2
Clock shift
+5V
X'tal (12.0MHz)
GND
Open
GND
CPU reset
µ-com stop
Modem TRD (TX clock)
Modem RTM (RX clock)
DTMF decode STD
Key interrupt
Power switch detect
MIC PTT
+5V
+5V
Volume level input
SP key 1/2
(Temp)
QT/DQT input
Battery level input
PLL unlock detect input
*SQL level input
*RSSI level input
GND
LSD (QT/DQT) output
DTMF/BEEP output
+5V
Battery DET SW
EXT. SP install check (No : H)
Non connect
←FPU
→FPU
Modem STB
DTMF clock
DTMF decoder SD
LCD CS
Shift register 1 STB
Shift register 2 STB
Flash ROM access port.
Pin No. Port name I/O
50 P82/A2 –
51 P83/A3 –
52 P84/A4 –
53 P85/A5 –
54 P86/A6 –
55 P87/A7 –
56 P40/AD0 –
57 P41/AD1 –
58 P42/AD2 –
59 P43/AD3 –
60 P44/AD4 –
61 P45/AD5 –
62 P46/AD6 –
63 P47/AD7 –
64 P50/A8 –
65 P51/A9 –
66 P52/A10 –
67 P53/A11 –
68 P54/A12 –
69 P55/A13 –
70 P56/A14 –
71 P57/A15 –
72 VSS –
73 P60/A16 –
74 P61/A17 –
75 P62/A18 –
76 P63/A19 –
77 P64/RD –
78 P65/WR –
79 P66/WAIT I
80 P67/ASTB –
81 VDD –
82 P100/TI5/TO5 O
83 P101/TI6/TO6 I/O
84 P102/TI7/TO7 O
85 P103/TI8/TO8 O
86 P30/TO0 O
87 P31/TO1 I
88 P32/TO2 I
89 P33/TI1 I
90 P34/TI2 O
91 P35/TI00 I
92 P36/TI01 I
93 P37 O
94 TEST –
95~98 P90~P93 I
99 P94 I
100 P95 I
TK-290
Function
Flash ROM access port.
GND
Flash ROM access port
Flash ROM (4M bit) access port.
Open
Flash ROM access port.
TX Inhibit (Radio kill)
Open
+5V
EEPROM clock
EEPROM data
Common clock
Common data
Shift register output enable
Key counter return 1
Key counter return 2
Self program flag (Soft pull up)
Key counter enable
2-tone decode latch
Digital SQL
PLL LE
GND
Rotary SW 1~4
Toggle SW input
Modem RDT (RX DATA)
25