TH-K4AT/K4E
14
MPU : 90522BPFFG139 (IC8)
■
Pin function
1
CLOCK
O
Common serial clock output
2
DATA
O
Common serial data output
3
EEPDI
I
Data input from EEPROM
4
EEPCS
O
Chip select output to EEPROM
5
VOX
O
VOX power supply switch
L:ON
6
BPF/APC
O
BPF tuning voltage output, APC voltage
output (PWM)
7
KAPC
O
APC ON/OFF switch
L:APC ON
8
VCC
-
Positive power supply
9
AFM
O
AF mute switch
L:Mute
10
SPM
O
Speaker mute switch
H:Mute
11
RXD
I
UART data input line from PC (9600bps)
12
TXD
O
UART data output line to PC (9600bps)
13
PTTE
I
External [PTT] key input
L:ON
14
PTTI
I
[PTT] key input
L:ON
15
5C(SAVE)
O
Save power supply switch
L:ON
16
FINAL
O
Gate bias control of TX final amplifier
L:Bias ON
17
SEG0
O
LCD segment output 0
18
SEG1
O
LCD segment output 1
19
SEG2
O
LCD segment output 2
20
SEG3
O
LCD segment output 3
21
SEG4
O
LCD segment output 4
22
SEG5
O
LCD segment output 5
23
SEG6
O
LCD segment output 6
24
SEG7
O
LCD segment output 7
25
SEG8
O
LCD segment output 8
26
SEG9
O
LCD segment output 9
27
SEG10
O
LCD segment output 10
28
SEG11
O
LCD segment output 11
29
SEG12
O
LCD segment output 12
30
SEG13
O
LCD segment output 13
31
SEG14
O
LCD segment output 14
32
SEG15
O
LCD segment output 15
33
VSS
-
GND
34
COR1
-
Power supply stabilization (Connected to
VSS through 0.1uF)
35
ENCA
I
Encoder A side input
36
ENCB
I
Encoder B side input
37
5MS
O
5MS main power supply switch L:ON
38
DVCC
-
Reference voltage input for DAC
39
DVSS
-
Ground for DAC
40
DTMF/
O
Encode waveform output of DTMF/BEEP/
BEEP
1750Hz (D/A)
41
TONE
O
Encode waveform output of CTCSS/DCS
(D/A)
42
AVCC
-
Positive power supply for ADC
43
AVRH
-
Reference voltage input for ADC
44
AVRL
-
Ground reference voltage input for ADC
45
AVSS
-
Ground for ADC
46
REM
I
Remote control microphone key voltage
input (A/D)
47
SIGIN
I
Decode waveform input of CTCSS/DCS
(A/D)
Pin
Pin
I/O
Function
No.
Name
Pin
Pin
I/O
Function
No.
Name
48
SQ
I
Noise voltage input for squelch (A/D)
49
SM
I
RSSI voltage input for S-meter (A/D)
50
VOXIN
I
Microphone voltage input for VOX (A/D)
51
THERM
I
TX temperature compensation input(A/D)
52
BATT
I
Battery voltage input (A/D)
53
BTEMP
I
Detection of thermistor voltage (temperature)
in the Ni-MH battety (A/D)
54
VCC
-
Positive power supply
55
CHARGE
O
Battery charge circuit power supply switch
H:ON
56
LAMP
O
Lamp power supply switch
H:ON
57
AFAMP
O
AF amplifier/Lamp AVR power supply
switch
H:ON
58
NAR
O
Wide/Narrow switching
H:Narrow
59
COM0
O
LCD common output 0
60
COM1
O
LCD common output 1
61
COM2
O
LCD common output 2
62
COM3
O
LCD common output 3
63
VSS
-
GND
64
SEG16
O
LCD segment output 16
65
SEG17
O
LCD segment output 17
66
SEG18
O
LCD segment output 18
67
SEG19
O
LCD segment output 19
68
SEG20
O
LCD segment output 20
69
SEG21
O
LCD segment output 21
70
SEG22
O
LCD segment output 22
71
SEG23
O
LCD segment output 23
72
SEG24
O
LCD segment output 24
73
NC
-
Not used
74
NC
-
Not used
75
SEG25
O
LCD segment output 25
76
SEG26
O
LCD segment output 26
77
SEG27
O
LCD segment output 27
78
SEG28
O
LCD segment output 28
79
SEG29
O
LCD segment output 29
80
SEG30
O
LCD segment output 30
81
SEG31
O
LCD segment output 31
82
V0
-
Not used
83
V1
-
Not used
84
V2
-
Not used
85
V3
-
LCD drive power supply 3
86
HST(VCC)
I
Not used (VCC)
87
MD2
I
“L” fixed
88
MD1
I
“H” fixed
89
MD0
I
“H” fixed
90
RESET
I
Reset input
L:Reset
91
VSS
-
GND
92
X0
I
System clock (7.9872MHz)
93
X1
O
System clock (7.9872MHz)
94
VCC
-
Positive power supply
95
PWRSW
I
Power switch interrupt input (
↓
)
96
INTUP
I
Power supply voltage interrupt input (
↑
)
97
INTDW
I
Power supply voltage interrupt input (
↓
)
SEMICONDUCTOR DATA
