Schematics
Vibrator
BATTERY
close to MT2502 each
LDO out ball
This R is optional for better
FM de-sense performance
close to MT2502 VDDK Pin (A11)
shieding case
close to MT2502 each power in ball (M10,E1,L3)
With or without use of the external buck，
R200 must SMT
GND直接连接到主地
RTC_XOSC32_ENB : VRTC domain
1: f32k_ck src INT clock source
0: f32k_ck src EXT clock source
RTC_XOSC32_ENB
shieding case
Main ground directly
Main ground directly
Under sleep mode ，VIO18 will shut down.
DC-DC Backup
This Cap shoud be
placed near BB
CHARGE
Place this resister close to battery
connector, and SNS trace should be 4mil~6mil,
and others are 40mils
40mils
40mils
C201
1uF
C204
1uF
C207
1uF
C203
2.2 uF/0603
POWER IN
VBAT IN
AUDIO
LED DRV
PMU LDO
CHARGER
SIM
SYS
CTL
MT2502 ABB
Boost
RTC
H10
G4
J3
K2
E1
P9
P13
L7
H13
P12
B8
N10
D1
G1
P8
K9
M2
N2
N4
P1
N3
N1
P6
N6
P5
N5
K7
K8
H12
J11
J12
A11
G5
H1
H2
J2
H5
L4
M10
K5
F11
L9
F3
J4
M3
L2
F7
F6
G7
H6
H7
H8
E2
J5
N9
P3
G6
J6
L3
F5
L1
P2
K1
N13
J7
J8
K6
M11
N8
M7
M6
U100-B
MT2502
C205
1uF
R202 0R
R200
0R
C212
1uF
R201
1.5K
1
3
5
4
6
2
7
U201
TPS62560DRVR
R213
430K/1%
R214
360K/1%
C227
22pF
C228
10uF/0603
C225
1uF
L201
LQM2MPN2R2NG0
C220
4.7uF/0603
D201
D / UDZS 5.1B/PZ5D4V2H
C215
1uF
1
2
J202
MOTO
1
2
J201
BAT CONN
C202
1uF
C200
1uF
C216
1uf
C224
1uf
R206 10K
C229
10nF
R207
1K
C217
330pF
R208
1K
C208
1uF
C209
1uF
C213
1uF
R216
100K
C221
1uF/0402
C206
1uF
R211
3.3K
R212
0.1 ohm / 0805 / 1%
C223
4.7uF/16V
C226
1uF
R210
39K 1%
R209
330K 1%
1
2
3
4
5
6
7
8
Q201
PNMT6N1
1 2
X201
9H03200012
C231
22PF
C232
22PF
R231
NC
R232
0R
VIBR
VRF
VA
VUSB
VIO18
VCORE
VSF
VBAT
VCORE
VCAMA28
MICN0
MICP0
LSRSTB
LSCE_B
VBAT
VDDK
VBAT
VCDT
CHR_LDO
DRV
ISENSE
VBAT
VIO28
VIBR
VSIM1
MICBIAS0
VDDK
VRTC
VRTC
VCORE
VIO28
VSF
VRF
VA
VCAMA28
VUSB
VIBR
VSIM1
VBAT
VSIM2
VSIM2
VMC
VMC
VRTC
ISINK
KPLED
VBAT
VDDK
GPIO1_BUCK_EN
VBAT
RESETB
PWRKEY
VIO28
SPK_OUTN
SPK_OUTP
SIM2_SCLK
SIM2_SRST
SIM2_SIO
AU_HPL
AU_HPR
VCHG
VBAT
VBAT
VCDT
CHR_LDO
DRV
ISENSE