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4
2 CHANGES (Suffix Code: B or later)
2.1.
Schematic Diagram
2.1.1.
Schematic Diagram (Handset)
GND
SIGN170
PCB
RE1
RE1
TALK
1
2
1
1
2
#
1
2
0
1
2
5
1
2
6
1
2
TP23
FLASH
1
2
TP22
3
1
2
2
1
2
CLEAR
1
2
VDDC
C124 100n
TP17
VDDDCDC2
P1.0
SW1
POWER
1
2
C126 100n
C127
100n
R121
100k
TP12
TP13
BZ1
1
2
Q104
VDDDCDC2
C113
NC
BAT
D107
C148
100n
C109
100u
6.3
VDDBAT
VDDDCDC1
TP1-
TP2+
C112
NC
MIC+
C105 100n
C106
100n
G
MIC-
R12
2
10k
VDDDCDC2
R101
3.3k
BATTERY+
BATTERY-
CHARGE-
VDDBAT
VDDDCDC2
CHARGE+
Q102
TP5
C142
1u
R107 56
R108
3.3k
TP6
G
G
G
C804
100n
G
C803
100n
VDDPA
VDDPA
G
G
C825
5p
G
G
C110 1u
G
G
G
VDDIO
C111
10p
C151 K1u
C150 K1u
D803
1
2
3
C102
220u
6.3
*
1
2
4
1
2
7
1
2
8
1
2
9
1
2
UP
1
2
DN
1
2
PHONEBOOK
1
2
MENU/OK
1
2
PAUSE
1
2
REDIAL
1
2
CID
1
2
VDDIO1
L103
10u
10u
C101
0.1u
C170
NC
ANT
12
G
D103
NC
D102
NC
C152 K1u
1
+
2
-
G
G
*R201
0
VDDDCDC1
VBAT
GND
TXD
RXD
IC101
1
G
2
S
3
K
4
A1
5
A2
6
D
D104
AK
G
G
ANT-Short
ANT-Short-GND
Q105
R114
12
C815
0.8p
C115 100p
C116 100p
C186
1000p
C121
10p
C160
NC
C161
NC
C162
NC
C131
220u
6.3
C140
4.7u
Q101
B
E
C
Q103
B
C
E
*Q201
NC
1
2
2
X101
20.736M
1
3
2
C802
4.7u
VDDIO
G
RA801
390
1
2
2
3
4
VDDIO1
C823
10p
C821
10p
R102
0.1
C201 0.1u
C202
0.1u
RA102
1k
1
23
4
C812
1.8p
C820
10p
IC103
3
SDRV
4
SENSE
5
ONSW
6
VCORE
7
VOSC
8
VSSOS
9
XTAL
10
LOAD
11
RXON
25
RXI
26
VVCO
27
VSSVCO
28
VDDBRF
29
VSSRF
30
RFOUT
31
VDDRF
32
VDDPLL
33
VDDPA1
47
NC10
48
VDDE2
49
NC11
50
A20/PL20/P0.5/TONE/PWM
51
VDDE3
52
A21/PL21/P0.6/R1
53
A22/PL22/P0.7/R2
54
VDDDCDC
55
CHARGESTART
76
I2CLK
77
SUPEEP
78
VIO2
79
MTSR/P1.5
80
SCLK/P1.6
81
TCK/P1.5/P0.3
82
VIO3
83
NC17
84
NC18
1
VDDB
2
RESETQ
12
TXON
13
RTS/PX0
14
CTS/PX1
23
PY4
24
RXIX
34
VSSPA1
35
POX
36
NC1
45
NC8
46
NC9
56
CDT
57
MICP
58
MICN
74
P0.0/PWM
75
I2DAT
85
P1.0
86
P1.1
87
TXD/R1
15
PX2
37
PO
59
MICS
88
RXD/R2
89
VSS
16
PX3
17
VIO1
18
PX4
19
PY0
20
PY1
21
PY2
22
PY3
38
NC2
39
VDDE1
40
NC3
41
NC4
42
NC5
43
NC6
44
NC7
60
MAD2P
61
MAD4P
62
MAD4N
63
VSSA1
64
NC12
65
NC13
66
NC14
67
NC15
68
VSSA2
69
VANA
70
HO1P
71
HO1N
72
NC16
73
VDDE4
C125
NC
C144
NC
RA101
120
1
2
3
45
6
7
8
*R141
NC
*C141
NC
C103
10u
CN2
4
SI
5
SCL
6
VDD
7
VG
8
V0
9
XV0
10
VSS
3
*CSB
2
A0
1
GND1
11
*RES
12
GND2
*D108
*D106
*D105
C107
22u
C100
100p
C128
10p
L801
3.9n
G
C818
2p
C817
2p
G
VSSA
G
G
L803
27n
C123
10p
R111
1k
C830
0.5p
R105
C810
0.5p
L806
1n
L804
1n
L805
1n
C819
0.5p
L807
4.7n
L808
22n
C114
1000p
R202
0
C104
10p
C807
10p
C831
10p
R106
C826
10p
IC102
1
0A
2
A1
6
SCL
7
WP
3
A2
8
VCC
4
GND
5
SDA
C122
6p
ZA2
1
2 3 4 5 6 7 8 9 10 11 12
C120
2.2u
C129 1u
LCD
BUZZER
LCD Back Light LED
Reciver
MIC
1.1k
1.1k
KX-TGBA20 SCHEMATIC DIAGRAM (Handset_Main)
NC: No Components
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