LG GW620 - Viewing your photos and videos; Editing your photos

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3. Technical Brief
3.14.4.2 Touch Button Interface
GW620 support 2 touch button(Home/Back)
Figure. Schematic of Touch Button
VREG_TOUCH_2.8V
SO240001-24QFN
U3
21 1
1
0
1
9 8 7
136
145
154
163
172
181
91 02
1
2
2
2
3
2
4
2
52
DN
GP
A
DS
4
C
N
1
D
N
G
D
DV
7S 6S
SCL S5
ATTN NC3
GPIO2 XCAP
GPIO1 GND0
GPIO0 NC2
SHLD S4
0S
0
CN
1S
2S
1C
N
3S
2.2K
R11
1u
C6
VREG_TOUCH_2.8V
8
1
R
K7.4
K
7
.
4
71R
K
011R
150p
C9
TP5
P
T
PT
TP6
2.2K
R10
1u
C11
PT
TP7
TP8
PT
225R
TOUCH_I2C_SDA
TOUCH_I2C_SCL
TOUCH_ATTN
SENSE1
SENSE1
SENSE0
SENSE0