LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
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Figure. Keypad Circuit (On switch, Side KEY and Touch key )
END
ON_SW
D603
RB521S-30
VA611
EVL14K02200
END
RB521S-30
D602
ON_SW_N
PM_ON_SW_N
SIDE KEY
1
2
3
4
5
CON602
R821
470
R823
470
100ohm
R601
VA604
ICVS0505500FR
R822
470
OUT102
KEY_COL(5)
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
(Shild Flood)
C101
C102
1u
1u
SHLD
S11
9
S2
S3
10
11
S4
S5
12
S6
13
14
S7
S8
17
18
S9
1
SCL
24
SDA
SHLD
6
VDD
21
16
XCAP
_ATTN
2
GND0
15
22
GND1
5
GPIO0
GPIO1
4
3
GPIO2
NC4
23
PGND
25
7
S0
S1
8
S10
19
20
SO2810
U1
R106
2.7K
2.7K
R105
R104
2.7K
22
R103
SHLD
VREG_LCD_2.8V
SENSE_3
TOUCH_CLK
TOUCH_ACK
TOUCH_DAT
SENSE_1
SENSE_2
SENSE_4