Schematics

1
1
2
2
3
3
4
4
D D
C C
B B
A A
_ _
CHRGb
1
GND
2
BAT
3
VCC(5+V)
4
PROG
5
U4
BL4054
C19
1uF
OUSIDEBAT
R36
2k
C20
10uF
BAT
BAT
1
2
P5
SMT1.25MM_2
1
2
P6
SMT1.25MM_2
VMCU
1
1
2
2
3
3
4
4
S2
MODE
GND
KEY_MODE
HEAT
VBUS
1
D-
2
D+
3
ID
4
GND
5
shell
6
J2
MINIUSB
UDM
UDP
OUSIDEBAT
GND
R8
0R
DACVDD
R1 1k R10
2.2k
C16
1000pF
C6
1uF
1
2
P14
MIC
C7
0.1uF
MIC
R18
100K
KEY_POWER
POWER_EN
GND
R23 10K
R30 10K
B
1
C
3
E
2
Q2
SS8050
E
2
C
3
B
1
Q1
AO3401
R21
2K
BATOUT
R31
10K
BAT
1
1
2
2
3
3
4
4
S1
电源
R19
NC/0R
KEY_POWER
GND
BAT
R5
10K
R14
2K
PA
C18
0.22uF
VO2
8
GND
7
VDD
6
VO1
5
SHUTDOWN
1
BYBASS
2
+IN
3
-IN
4
U2 8002A
R16 10K
C13
1uF
GND
SHDN
C12
10uF
GND
GND
OUTL+
OUTL-
R15
20K
BATOUT
OUTL-
OUTL+
1
2
P2
SMT1.25MM_2
OUTL-
OUTL+
1
2
P1
SMT1.25MM_2
DAC_R
LED
MIC
MCU
KEY
C1
1uF
C2
1uF
C3
1uF
C10
1uF
C9
1uF
PC5/SD1CLK
1
PC4/SD1CMD
2
PC3/SD1DAT
3
USBDM
4
USBDP
5
PA0/PA4
6
PA3
7
DACL
8
DACVDD
9
VCOM
10
DACVSS
11
VDDIO
12
PB5
13
PB4
14
PB3
15
PB1
16
PB0
17
VBAT
18
BT_AVDD
19
BT_RF
20
FMIP
21
VSSIO
22
BT_OSCI
23
BT_OSCO
24
U1
AC6921A
DACVDD
VCOM
AGND
+3.3V
BT_AVDD_25
GND
UDM
UDP
GND
GND
MIC
DAC_R
C15
NC
C11
NC
1 2
Y1
24M
PC5
L1
0R
L2
NC
C4
2.7P
BT_ANT
BATOUT
HE_AT
POWER_EN
KEY_POWER
KEY_MODE
D9
RLED
R9
1K
D4
GLED
R11
1K
BTOSCO
BTOSCI
VMCU
LED1
LED2
LED3
LED4
LED5
LED07
LED08
Q1
1
Q2
2
Q3
3
Q4
4
Q5
5
Q6
6
Q7
7
GND
8
QH
9
SRCLR
10
SRCLK
11
RCK
12
G
13
SI
14
Q0
15
VCC
16
U3
74HC595
GND
GND
SH_CP
ST_CP
DAT
IO_LED
D5 BLED
D3 BLED
D2 BLED
D1 BLED
R2 4.7K
R3 4.7K
R4 4.7K
R6 4.7K
D6 BLED
R7 4.7K GND
LED1
LED2
LED3
LED4
LED5
VMCU
R29
2k
R33
2k
R34
2k
MOTOLHEAT
MOTOR
HE_AT
MOTO_L MOTO_R
D10
IN5819
D14
IN5819
D15
IN5819
B
1
C
3
E
2
Q3
AO3400
B
1
C
3
E
2
Q7
SS8050
B
1
C
3
E
2
Q8
SS8050
GND
R38
10k
R39
10k
R32
2k
1
2
P4
SMT1.25MM_2
1
2
P3
SMT1.25MM_2
VMCU
MOTOR
MOTOL
VMCU
MOTO_L
VMCU
VMCU
DAT
ST_CP
SH_CP
MOTO_R
R12 0R
SHDN