1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
PC14-OSC32_IN
3
PC15-OSC32_OUT
4
XTAL-IN
5
XTAL-OUT
6
PB0/ADC_IN8
18
PB1/ADC_IN9
19
PB10/I2C2_SCL/USART3_TX
21
PB11/I2C2_SDA/USART3_RX
22
PB12/SPI2_NSS
25
PB13/SPI2_SCK
26
PB14/SPI2_MISO
27
PB15/SPI2_MOSI
28
PB5/I2C1_SMBAI
41
PB6/I2C1_SCL/TIM4_CH1
42
PB7/I2C1_SDA/TIM4_CH2
43
PB8/TIM4_CH3
45
PB9/TIM4_CH4
46
VBAT
1
PC13-ANTI_TAMP
2
NRST
7
VSSA
8
VDDA
9
PA0-WKUP
10
PA1
11
PA2/USART2_TX
12
PA3/USART2_RX
13
PA4/SPI1_NSS
14
PA5/SPI1_SCK
15
PA6/SPI1_MISO
16
PA7/SPI1_MOSI
17
PB2/BOOT1
20
VSS_1
23
VDD_1
24
PA8/USART1_CLK
29
PA9/USART1_TX
30
PA10/USART1_RX
31
PA11 / U SBDM
32
PA12/USBDP
33
PA13/JTMS-SWDAT
34
VSS_2
35
VDD_2
36
PA14/JTCK-SWCLK
37
PA15/JTDI
38
PB3/JTDO
39
PB4/JTRST
40
BOOT0
44
VSS_3
47
VDD_3
48
U1
STM32F103C8T6
GND
GND
GND
3V3
3V3
GND
3V3
PC13
NRST
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB10
PB11
PB9
PB8
BOOT0
PB7
PB6
PB5
PB4
PB3
PA15
PA12
PA11
PA10
PA9
PA8
PB15
PB14
PB13
PB12
PA13
PA14
1
2
3
4
P1
SWD
Y1
32.768K
C1
7pF
C2
7pF
GND
Y2
8M
C8
22pF
C9
22pF
GND
3V3 GND
3V3
R13
1K
3V3
R14
1K
PB1
PB0
主控芯片
OLED
SWD
Type-C
LED
灯
S1
PA0
GND
3V3
PB10
PB11
3V3
扩展
I/O
接口
SWC
SWD
BOOT1
S2
GND
PA1
A0
1
A1
2
A2
3
VSS
4
SDA
5
SCL
6
WP
7
VCC
8
U4
AT 2 4CXX
GND
3V3
C17
0.1uF
GND
GND
PB6
PB7
IIC
存储
3V3
PC13PB9
PB8
H1
固定孔
H2
固定孔
H3
固定孔
H4
固定孔
GND
固定孔
3V3
R12
1K
PA9
3V3
R11
1K
PA10
串口
1
指示灯
SWC
SWD
TX
RX
TXD
RXD
RXD
TXD
GND
PA13
PA14
3V3
GND
VCC
SCL
SDA
P2
OLED_4
R6
10K
R7
10K
BOOT
选择
3V3
3V3 GND
BOOT1
BOOT0
1
2
4
3
U5
拨码开关
5V
D-
D+
5V
C5
0.1uF
C4
10uF
C7
0.1uF
3V3
稳压电路
GND
C6
10uF
GND
3V3 GND
R2
1K
复位电路
3V3
R1
10K
RESET
C3
0.1uF
GND
NRST
C10
0.1uF
C11
0.1uF
C12
0.1uF
C13
0.1uF
GND
3V3
去耦电容
GND
1
TXD
2
RXD
3
V3
4
D+
5
D-
6
XI
7
XO
8
CTS#
9
DSR#
10
RI#
11
DCD#
12
DTR#
13
RTS#
14
RS232
15
VCC
16
U3
CH340G
GND
C16 0.1uF
D+
D-
XI
XO
5V
C15 0.1uF
C14 10uF
GND
RTS
DTR
Y3
12MHz
C18 22pF
C19 22pF
GND
XO
XI
3V3
R3
10K
NRST
Q1
NPN
R4
1K
R5
1K
RTS
DTR
3V3
R10
1K
BOOT0
GND
A1
TX1+
A2
TX1-
A3
VBUS
A4
CC1
A5
D+
A6
D-
A7
SUB1
A8
VBUS
A9
RX2-
A10
RX2+
A11
GND
A12
GND
B12
RX1+
B11
RX1-
B10
VBUS
B9
SUB2
B8
D-
B7
D+
B6
CC2
B5
VBUS
B4
TX2-
B3
TX2+
B2
GND
B1
EH
25
TYPE-C Type-c
PA10
PA9
RXD
TXD
D2
Diode
D1
LED
D4
LED
D3
LED
D6
LED
D5
LED
Q2
PNP
一键下载
PC14
PC15
R8 10K
R9 10K
1
3
5 6
4
2
P3
Header_2X3
3V3
GND
GND GND
GNDGND
5V
5V 5V
D-
D+
按钮
扩展电源
IN
GND
OUT
U2
AMS1117
PB7
PB6
PB5
PB4
PB3
PA15
PA12
PA11
PA8
PB15
PB14
PB13
PB12
PA10
PA9
PA0
PA1
PA4
PA5
PA6
PA7
PB0
PB1
PA2
PA3
PB10
PB11
5V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
U6
Header_17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
U7
Header_17
GND
