Schematics

1
1
2
2
3
3
4
4
D D
C C
B B
A A
C1 105
C2 105
C3
0R
OUT-
R1
100K
C4 105
R2
10K
C5473
C9 106
MUTE
VBAT
VBAT
GND
1
2
SPK1
SD
1
BYP
2
MODE
3
IN
4
VO+
5
VDD
6
GND
7
VO-
8
U2
LTK5128
OUT+
ABD
GND
C10
NC
C11
NC
C12
NC
1
2
BT_ANT1
Y1 24M
GND
R4
10K
VDDIO
DC5V
BAT-
VCC
1
DM
2
DP
3
GND
4
GND
5
GND
6
GND
7
GND
8
GND
9
USB1
1 2
LED7
R5
1K
R6
2.7K
BAT1
VBAT+
CHRG
1
GND
2
BAT
3
VCC_5V
4
PROG
5
U4
4054
GND
R9
100K
1 2
S1
POWER
1 2
S2 P/P
GND
R13
0R
R14
22K
VDDIO
ADKEY
1 2
LED8
R15
1K
BLUE
Q1
9014
R18
10R
R19
NC
R20
4.7K
Q2
9014
R23
10R
R21
NC
R22
4.7K
Q3
9014
R26
10R
R24
NC
R25
4.7K
1 2
3
4 5
6
LED6
RGB
MCU
ADKE
1 2 3
4 5 6
LED1
RGB
1
2 3
4 5 6
LED2
RGB
1 2
3
4 5 6
LED3
RGB
1 2
3
4
5 6
LED4
RGB
1 2 3
4 5 6
LED5
RGB
GND GND
GND
B G
R
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/SD0CMD/PC4
10
ADC14/SD0DAT/PC3/USBDM
11
ADC3/PA4/USBDP
12
PA1/PA0
13
VSSIO
14
VCOM
15
DACL
16
U1
AC6969D
GND
C13
NC
GND
GND
VBAT+
GND
MUTE
R
BLUE
B
G
MIC
GND
DACL
ADKEY
VDDIO
VBAT+
C14 105
GND
C15
222
R8
4.7K
C16
NC
GND
DACL
1 2
+
MIC1
GND
MIC
MIC
RGB