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C325
C301
C302
C303
1UF
33PF
33PF
100NF
$V
SIMRST
SIMCLK
SIMDATA
VBAT
VRTC
R309
390K
TA_VEXT
PWR_ON
JIG_ON
RTCALARM
PWR_KEEP
C305
R316
UP_SDI
100NF
330K
UP_SCLK
UP_CS
EN_VRF
KEY_COL(2)
EN_VPAC
3
1
XOENA
2
KEY_ROW(0)
Q300
TA_VEXT
R319
CHG_DET
10K,1%
3
Q302
1
2
CHG_ON
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SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
CN300
1
4
1
4
2 2
5
5
3
6
3
6
GG
GG
7
89
10
C300
33PF
C304
100NF
49
50
51
48
29
30
28
6
54
VLDO_7 40
UP_RST
53
UP_CLK
52 UP_IO
41
VDD67
44 ADC_AUX1
VLDO_6 42
45
ADC_AUX2
56
ADC_TRIG
32
VL5S_A
31
3 VACC
VL5S_B
2 VBAT
33
VLDO_5
1
VEXT
34
43 BTEMP
VDD5
46
36
PWR_SW1N
VL4S_A
47
35
PWR_SW2
VL4S_B
U300
13
RTC_ALMN
37
21
PWR_KEEP
VLDO_4
20 PSW1_BUF
14
38
INTRQ
VDD34
15
SDI
16
39
SDO
VLDO_3
17
SCLK
18
CSN
12
VRTC
22
EN_3
23
EN_4[0]
24
11
EN_4[1]
VLDO_2
25
EN_5
26
EN_5A
27
19
EN_5B
RESETN
55 RING_PWM
9
VLDO_1
57
GND
58
10
GND
VDD12
59
GND
60
GNDD
5
4
78
4
U301
ISENSE
1
6
DRIVE
GND
2
5
VSENSE
3 VCC
PROG 4
C317
C326
C329
10UF
100NF
33PF
10V
Q303
6
1
2
R323
47K,1%
5
3
4
2-5
VBAT
VCC_1.8A
VCCD
VRF
VPAC
VREF
C306
C310
C311
C312
C313
C307
470NF
2.2UF
2.2UF
2.2UF
2.2UF
10UF
10V
Q301
6
5
2
1
VBAT
3
C316
10UF
10V
R322
10K,1%
ICHRG
TA_VEXT
R324
3K,1%
VOSC
VCCA
VCCB
VRTC
D300
0
R318
1.2K
RST
M1
C309
C308
C314
C315
10UF
2.2UF
10V
2.2UF
100PF
POWER
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