Schematics

LDO-IN/PB5
1
VBAT
2
VDDIO
3
PB1/ADC5
4
FMIP
5
BT-RF
6
BT-OSCI
7
BT-OSCO
8
ADC12/SD0CLK/PC5
9
ADC11/SAK0CMD/PC4
10
ADC14/SD0DAT/PC3/DM
11
ADC3/PA4/DP
12
PA1/PA0
13
VSSIO
14
VCOM
15
DACL
16
U2
6969
VMCU
VDDIO
ADKEY
Y1
24MHZ
C10
NC
GND
BT OSCO
BT OSCI
C9
NC
BT OSCO
BT OSCI
C6 105
C8 105
GND
C7 105
GND
BAT1
4.2V
105
R7
3K6
CHRG
1
GND
2
BAT
3
VCC
4
PROG
5
U3
CW4054
CHARGE
R5
1K
LED6
0603红灯
GND
VBAT
VBUS
1
D-
2
D+
3
GND
4
G
5
USB1
USB-MIN
GND
VUSB
LOUL-
LOUL+
R3 10K
GND
C1 105
MUTE
C2
106
GND
DACL
VMCU
C5 472
1
2
J1 SPK
R1
33K
SD
1
BYP
2
MODE
3
IN
4
VON
5
VDD
6
GND
7
VOP
8
U1
5128
LOUL+
LOUL-
GND
DACL
C3 224
C4 104 R2 24K
MUTE
BT-ANT1
ANTENNA_PIFA
GND
L1
NC
R4
0R
L2
NC
LED1
0603
GND
AB/D
LED I/O
GND
GND
GND
GND
GND
1
P IN
2
VCC
3
P OUT
4
LED2 5050
GND
1
P IN
2
VCC
3
P OUT
4
LED3 5050
GND
1
P IN
2
VCC
3
P OUT
4
LED4 5050
GND
1
P IN
2
VCC
3
P OUT
4
LED5 5050
L IN02
L IN02
L IN03
L IN04
L IN03
L IN04
VMCU
VMCU
VMCU
VMCU
LED I/O
AB/D
S1
VMCU
R6
100K
VMCU
AC