1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2021/3/23 Sheet of
File: E:\资料\..\原理图.SchDoc Drawn By:
C3
22p
C2
22p
SWD下载口
晶振
NRST
复位
C1
104
R2
10K
BOOT0
PB2
下载方式
R5
10K
R6
10K
BOOT1
+VIN
3
ADJ/G
1
+VOUT
2
IC1
芯片电源
C9
104
C10
104
PA14
PA13
swclk / tck
swdio / tms
GND
GND
GND
GND
GND
+5V +3.3V
GND
+3.3V
+3.3V
RS
RW
E
GND
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
LCM1602
D0
7
D1
8
D2
9
D3
10
D4
11
D5
12
D6
13
D7
14
RS
4
R/W
5
E
6
VLCD
3
VBACK+
15
VBACK-
16
DS2
LCD-1602
GND
+3.3V
+3.3V
LCD1602
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
E
RW
RS
S2
SW-PB
S4
SW-PB
S3
SW-PB
S5
SW-PB
GND
GND
GND
GND
1
2
3
4
P1
Header 4
VBAT
1
PC13-TAMPER-RTC
2
PC14-OSC32_IN
3
PC15-OSC32_OUT
4
PD0 OSC_IN
5
PD1 OSC_OUT
6
NRST
7
PC0
8
PC1
9
PC2
10
PC3
11
VSSA
12
VDDA
13
PA0-WKUP
14
PA1
15
PA2
16
PA3
17
VSS_4
18
VDD_4
19
PA4
20
PA5
21
PA6
22
PA7
23
PC4
24
PC5
25
PB0
26
PB1
27
PB2/BOOT1
28
PB10
29
PB11
30
VSS_1
31
VDD_1
32
PB12
33
PB13
34
PB14
35
PB15
36
PC6
37
PC7
38
PB8
39
PC9
40
PA8
41
PA9
42
PA10
43
PA11
44
PA12
45
PA13/JTMS
46
VSS_2
47
VDD_2
48
PA14/JTCK
49
PA15/JTDI
50
PC10
51
PC11
52
PC12
53
PD2
54
PB3/JTDO
55
PB4/NJTRST
56
PB5
57
PB6
58
PB7
59
BOOT0
60
PB8
61
PB9
62
VSS_3
63
VDD_3
64
U1
STM32F103RCT6
GND
GNDGND
GND
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9
PA10
PA11
PA12
PA13
PA14
PA15
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PB8
PB9
PB10
PB11
PB12
PB13
PB14
PB15
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC8
PC9
PC10
PC11
PC12
PC13
PC14
PC15
PD0
PD1
PD2
NRST
BOOT0
GND
GND
GND
+3.3V
+3.3V+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
GND
C6
104
C7
104
C4
104
GND
+3.3V
C5
104
PD0
PD1
+5V
VIN
S1
USB供电
ID
4
VBUS
1
D-
2
D+
3
GND
5
J1
USBconnecter
VIN
GND
GND
RXD2
TXD2
1
2
3
4
5
6
P2
STATE
+3.3V
蓝牙模块接口
R4 102
+3.3V
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA10
PA9
S6
SW-PB
GND
PB12
PB13
PB14
Vcc2
1
X1
2
X2
3
GND
4
RST
5
I/O
6
SCLK
7
Vcc
8
U2
DS1302
+5V
1 2
Y1
XTAL
BT1
BATTERY
GND
SCLK
IO
RST
DS1302
C8
C11
GND
BL1
BELL
Q2
2N3906
GND
R7
1K
蜂鸣器
+3.3V
12
Y2
8MHZ
VCC_5V +5V
PC6
PC7
PC8
PC10
PB3
PB4
PB5
PB6
PB7