Schematics

power/on/off
BT-MCU
POWER&USB
1
NSLEEP
2
AOUT1
3
ASEN
4
AOUT2
5
BOUT2
6
BSEN
7
BOUT1
8
FAULT
9
BIN1
10
BIN2
11
BST
12
VIN
13
GND
14
VDD
15
AIN2
16
AIN1
17
GND
U4
DRV8833PWR/PT5139/CS9016
C39
2.2uF
C40
10nF
C41
1uF
C43
470PF
C42
10uF
C10
1uF
TP2
TP4
TP5
TP6
BT_DEBUG_TX1
1
VBUS
2
D-
3
D+
4
ID
5
GND
6
L1
7
L2
8
R1
9
R2
11
NC2
10
NC1
USB1
MICRO-NJ
MICRO-USB
TP1
TP7
TP8
TP11
TP12
TP13
TP15
TP16
TP17
TP18
TP19
TP20
TP21
TP22
TP23
1 2
3
D2
BAT54C
C14
2.2uF
1
VCOM
2
DACL
3
DACR
4
FMIP
5
PB11/SD-PWR
6
PB10/SD0CMDB/ADC9
7
PB9/SD0CLKB
8
PB8/SD0DATB/ADC8
9
LDOIN/PB5
10
VBAT
11
BT-AVDD
12
PB3/PR1/ADC6
13
PB2/PR0
14
PB1/ADC5
15
PB0
16
BT-RF
17
BT-OSCI
18
BT-OSCO
19
ADC13/SD1CLKA/PC5
20
ADC10/SD1CMDA/PC4
21
SD1DAT/PC3
22
PC2
23
ADC4/PA12/USBDM
24
ADC12/USBDP
25
ADC3//PA10
26
PA9
27
ADC0/AUX0R/PA1
28
AUX0L/PA0
29
MIC_BIAS/PC7
30
MIC
31
VDDIO
32
DACVSS
33
GND
U3
AC6956C
1 2
34
Y1
24MHz
C13
2.2uF
C16
2.7P
L2
NC
C9
1uF
C15
10uF
C28
10uF
R9
1.5K
R11 1K
LED2Red
B
E
C
Q3
MMB3904
TP3
TP
1
/B
2
B
3
/A
4
A
5
VH
6
VH
7
/LATCH
8
NC
9
GND
10
GND
11
TM
12
STB
13
VDD
14
GND
15
GND
16
GND
17
CLOCK
18
DI
19
VH
20
VH
21
VH
22
V-PAPER
23
PAPER_GND
24
PAPER_SENSOR
25
G
26
G
U1
PT48DS-B_24PIN
C2
10uF
TP30
TP10
R6 510R
R8
47K
R35 0.5R 1%
R37
0.5R 1%
LED1
GREEN
R3
47K
R38
10K 1%
R39
10K 1%
R42
56K 1%
R0402
R44
47K 1%
R0402
R43
47K 1%
R28
10K
C17
NC
C18
NC
C27
10uF
G
S D
Q1
TCS1305
R5 10K
R13
180R
R17
30K
TP24
1
TEMP
2
PROG
3
GND
4
VCC
8
CE
7
CHRG
6
STDBY
5
BAT
9
PAD
U5
YX4056A/TCS4056
C1
470uF/10V
R2
NC
C3
10uF
C4
10uF
1 2
3
4 K1
TS-D0008-L3.5
ANT1
BT-ANT
TP9
TP14
TP25
R1 NC/0.5R
R4
1R
TP28
1
2
3 4
BAT1
2pin_W
1
-
2
R
3
G
4
B
LED3
1
2
3
4
56
J2
1
2
3
4
5 6
J1
R7 NC
R12 NC
R10 NC
p
G
S
D
Q2
SI2301
R14
100K
R15
1K
R16 0.5R
MOTOR-CPU-A-
MOTOR-CPU-B
MOTOR-CPU-B-
MOTOR-CPU-A
MOTOR-A
MOTOR-A-
MOTOR-B
MOTOR-B-
VMCU
GND
VCC3V3
PRN-ADC-TEMP
VMCU
PRN-ADC-VH
POWER-CTL
42BAT+
VMCU
VCC3V3
VCC3V3
ADC-PAPER-DETC
VMCU
USB-DM
USB-DP
DEBUG/CHRG
LED1-B
GND
VMCU
42BAT+
VCC3V3
ADC-PAPER-DETC
GND
VMCU
PRINTER-MOSI
PRINTER-CLK
GND
PRINTER-STB
GND
PRINTER-LATCH
VMCU
MOTOR-A-
MOTOR-A
MOTOR-B-
MOTOR-B
VCC3V3
PRN-ADC-TEMP
USB_IN
USB-DP
USB-DM
GND
GND
GND
GND
GND
GND
GND
GND
GND
VCC3V3
GND
PRINTER-MOSI
PRINTER-CLK
PRINTER-STB
GND
PRINTER-LATCH
VMCU
MOTOR-A-
MOTOR-A
MOTOR-B-
MOTOR-B
PRN-ADC-TEMP
GND
PR2-KEY
VMCU
GND
PRINTER-STB
PRINTER-CLK
PRINTER-MOSI
PRINTER-LATCH
GND
GND
USB-DM
USB-DP
MOTOR-CPU-A-
MOTOR-CPU-A
POWER-CTL
LED1-B
MOTOR-CPU-B
MOTOR-CPU-B-
DEBUG/CHRG
PRN-ADC-VH
PRN-ADC-TEMP
LED_B
GND
GND
GND
PR2-KEY
VMCU
VCC3V3
GND
GND
USB5V
42BAT+
BT-OSCO
BT-OSCI
GNDGND
VCC3V3
VCC3V3
VMCU
VMCU
MOTOR-A-
MOTOR-A
MOTOR-B-
MOTOR-B
ADC-PAPER-DETC
V-PAPER
PRINTER-MOSI
PRINTER-CLK
PRINTER-STB
PRINTER-LATCH
PRN-ADC-TEMP
ADC-PAPER-DETC
USB5V_IN
GND
GND
GND
GND
VMCU
USB5V_IN
GND
VMCU
GND
GND
NI
NI
GND
GND
GND
GND
R
G
B
R
B
G
GND
LED_R
LED_B
LED_G
GND
B
G
R
DEBUG/CHRG
LED_G
LED_R
B
G
R
USB5V
USB_IN
GND
USB5V_IN