Semiconductor Data - Kenwood UBZ-LJ8 Service Manual

UBZ-LJ8
MPU : M38C24M6502HP (IC208)
■ Pin Function
Pin No. Pin Name I/O
1 BUSY I
2 RSSI I
3 REM I
4 VOX I
5 TUNE I
6 OSCO O
7 FLASH (GND) -
8 RESET I
9 SPM O
10 SPAMP O
11 GND -
12 Xin -
13 Xout -
14 Vcc -
15 MJDET I
16 BTLC O
17 ESDA I/O
18 ESCL O
19 PWR I
20 RxD I
21 TxD O
22 PTT I
23 MODE I
24 NC -
25 COM2 O
26 COM1 O
27 COM0 O
28 NC -
29~44 S15~S0 O
45 LAMP O
46 3MC O
47 3TC O
48 3RC O
49 SAVE O
50 CLK O
51 DAT O
52 AKDIR O
53 PLLE O
54 UL I
55 UP I
8

SEMICONDUCTOR DATA

Function
Busy input
RSSI input
Remote key input
VOX input
Enter to tuning mode
Oscillation output
GND
Reset input
Speaker mute H : Mute
Speaker amp switch H : ON
GND
Crystal (3.633MHz)
Crystal (3.633MHz)
3V
MIC jack detection
BTL control H : ON
EEPROM data
EEPROM clock
[Power] key input
PC interface
PC interface
[PTT] key input
[MODE] key input
NC
LCD common signal output (COM2)
LCD common signal output (COM1)
LCD common signal output (COM0)
NC
LCD segment output (SEG15~SEG0)
Lamp control H : ON
3C control L : ON
3T control L : ON
3R control L : ON
Battery save control L : ON
Common clock
Common data
AK2346 DIR
PLL IC enable
PLL IC unlock
[UP] key input
Pin No. Pin Name I/O
56 DOWN I [Down] key input
57 QTOUT O CTCSS output
58 BEEP O Beep output
59 MICM O MIC mute
60 BATTL I Low battery detection
61 GND - GND
62 VREF - 3V reference voltage
63 BATT I Battery voltage
64 QTIN I CTCSS input
1k bit Serial EEPROM : AT24C01A10SI18 or
CAT24WC01JI18 (IC210)
■ Pin Function
Pin No. Pin Name
1~3 A0~A2 Address inputs
4 VSS Ground
5 SDA Serial data
6 SCL Serial clock input
7 WP Write protect
8 VCC Power supply
Reset IC :
BD4724G (IC202) and BD4730G (IC206)
■ Pin Function
Pin No. Pin Name
1 NC NC
2 VEE1 Reference voltage
3 VEE2 Reference voltage
4 OUT Output voltage
5 VCC Power supply
Audio Power Amplifier : LM4865M (IC203)
■ Pin Function
Pin No. Pin Name
1 VCC Supply voltage
2 –VIN input
3 HP_SEN Detection of speaker and mic
4 DC_VOL/SW DC voltage volume control
5 VO1 Output 1
6 GND Ground
7 BYPASS Bypass capacitor
8 VO2 Output 2
Function
H : Mute
Function
Function
Function