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+3.0V
(1)
(2)
(3)
(4)
+5.5V
X501
13.824M
R509 NC
(5)
(6)
(7)
(8)
(9)
(10)
IC501
GND
(11)
MODEL
R510
NC
R511
NC
(12)
+3.0V
C601
0.1u
IC601
16M FLASH
1
8
*CS
VCC
2
7
DO/IO1
*HOLD/IO3
3
6
*WP/IO2
CLK
4
5
GND
DI/IO0
+3.0V
R160
820
C173
R177
R172
680k
1k
0.1u
560p
C175
Q171
Rx
C458 0.033u
C457 0.033u
R121
390k
C121 680p
R122 390k
C122 680p
C459
C120
NC
1000p
C460
1000p
3.0V
C461
NC
+3.0V
+3.0V
VCCA
R501 10
VREF
VCCA
C505 10u
22
MIN
C506
21
VCCA
20
1u
VREF
19
DCIN3/LIN1
18
DCIN2
17
DCIN1
16
DCIN0/LIN0
15
DOUBOUT
14
DOUBCAPP1
13
DOUBCAPP
C504
1u
12
DOUBCAPN
C521
11
1u
DOUBCAPN1
10
VBAT
C501
C502
9
COREOUT
10u
0.1u
8
VDDC2
7
GPIO[26]
6
GPIO[25]
5
GPIO[24]
4
GPIO[23]
3
GPIO[22]
2
GPIO[21]
1
GPIO[20]
VDDC
VDDC
+3.0V
C520
0.1u
1.2V
+3.0V
0.1u
C611
IC611
128K EEPROM
8
1
A0
VCC
2
7
A1
WP
3
6
A2
SCL
4
5
GND
SDA
Q161
C
B
E
C163
NC
R164
R161
2.7k
100k
R151
100k
Tx
C184
1u
Caller ID
VDDC
HOOK
+3.0V
BELL
BELL
Q111
CHARGE_DET
L501
100n
LCD_RST
HOOK
LCD_CD
SPI2_CLK
SPI2_DO
LCD_CS
UTX
URX
GND
ZA1
NC
RA611
10
9
8
7
3.3k
11
6
12
1
2
3
4
5
GND
HAK_CL1
KX-TG6841BX SCHEMATIC DIAGRAM (Base Unit_Main)
69
KX-TG6841BXB/KX-TGA680BXB
REFERENCE
REFERENCE
1XX : TEL LINE
1XX : TEL LINE
3XX : POWER, CHARGE
3XX : POWER, CHARGE
4XX : MIC, SP
4XX : MIC, SP
5XX : BBIC
5XX : BBIC
6XX : FLASH, EEPROM, KEY, LCD
6XX : FLASH, EEPROM, KEY, LCD
7XX : FOR DK/BT
7XX : FOR DK/BT
8XX : RF
8XX : RF
Q141
R141
100k
C101
680p
Q142
D101
C
B
1
2
E
4
3
C102
680p
C115
NC
R115
NC
+5.5V
+3.0V
R701
3.3k
Q701
Q702
3.0V
VBAT
VBAT
IC302
2
OUT1
4
OUT2
ADJ
CHG+
Q351
Q352
Q353
PNLB2155ZA-GW
PCB
RE1
NC: No Components
L1T
(YELLOW)
(GREEN)
L1R
22
P101
1
2
+5.5V
!
F301
3.0A
DCP
DCM
CHG+
CHARGE+
CHARGE-
5.5V
+5.5V
3
IN
1
+5.5V
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