LC-32LE40E-LC-42LE40E
101
[3] KEY SCHEMATIC DIAGRAM
R122
2.94K 1%
Menu Input PowerVOL +VOL-CH +CH -
1.87 1.4 0.470.470.931.4 0.93
R116
NC/ 2K7 1/16W 5%
1
2
3
4
5
6
7
89
CN0101
CONN
SM_SDA
SM_SCL
OTP
KEY2
KEY1
R120
330 OHM 1/16W
R119
820R 1%
R124
NC/ 2K2 1/16W 5%
R115
330 OHM 1/16W
M
E
N
U
I
N
P
U
T
V
O
L
-
R121
820R 1%
V
O
L
+
C
H
-
C
H
+
CIN_03
1
CB105
TOUCH PAD 6X12-OVAL
1
CB106
TOUCH PAD 6X12-OVAL
1
CB104
TOUCH PAD 6X12-OVAL
1
CB101
TOUCH PAD 6X12-OVAL
1
CB107
TOUCH PAD 6X12-OVAL
1
CB103
TOUCH PAD 6X12-OVAL
1
CB102
TOUCH PAD 6X12-OVAL
P
O
W
E
R
CIN_01CIN_07
CIN1
1
CIN2
2
CIN3
3
CIN4
4
CIN7
5
CIN9
6
CIN11
7
VSHILD
8
VBIAS
9
AVSS
10
AVCC
11
GPIO11
12
DVCC
13
GPIO9
14
SCLK
15
SDA
16
INT#
17
GPIO7
18
GPIO4
19
DVSS
20
GPIO3
21
GPIO2
22
NC
23
THD1
24
E-PAD
25
U102
IT7235BFN-3108/AX (R)
Key 1
Key 2
3.3V
GPIO_09
3.3V
GPIO_03
GPIO_11
GPIO_02
3.3V
GPIO_13
GPIO_04
GPIO output
9
GPIO2,3,4,7,9,11, 13 output data format
is like mechanical switch output form,
i.e., No touch: Open, Touch: GND.
1
7
2
2
13
CIN_04 CIN_09CIN_11
11
LED output
94
11
CIN_02
74
CIN(-)
Voltage
CIN(+)
3
3
Cap Pads
C105
0.1uF 25V
C101
0.1uF 25V
R112
100OHM1/16W
AC_shield is a large
cooper which encircles the
Cin button and it's path.
VBIAS
C104
100P 50V
GPIO_07
C
H
-
C
H
+
P
O
W
E
R
I
N
P
U
T
M
E
N
U
V
O
L
-
V
O
L
+
AC_SHIELD
AC_SHIELD
R118
1.65K 1%
CIN_04
CIN_03
CIN_02
CIN_01
CIN_07
CIN_09
DVSS
GPIO_13
OTP
SM_SDA
SM_SCL
GPIO_07
GPIO_09
3.3V
AVSS
VBIAS
GPIO_11
CIN_11
C102
0.1uF 25V
R117
1.65K 1%
3.3V
C103
0.1uF 25V
GPIO_02
GPIO_03
GPIO_04
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