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TITLE:
REV:
Date:
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Company:
STM32L431RCT6
HU2.1
PC13
2
PC14-OSC32_IN
3
PC15-OSC32_OUT
4
PH0-OSC_IN
5
PH1-OSC_OUT
6
NRST
7
PC0
8
PC1
9
PC2
10
PC3
11
PA0
14
PA1
15
PA2
16
PA3
17
PA4
20
PA5
21
PA6
22
PA7
23
PC4
24
PC5
25
PB0
26
PB1
27
PB2
28
PB10
29
PB11
30
PB12
33
PB13
34
PB14
35
PB15
36
PC6
37
PC7
38
PC8
39
PC9
40
PA8
41
PA9
42
PA10
43
PA11
44
PA12
45
PA13
46
PA14
49
PA15
50
PC10
51
PC11
52
PC12
53
PD2
54
PB3
55
PB4
56
PB5
57
PB6
58
PB7
59
PH3/BOOT0
60
PB8
61
PB9
62
STM32L431RCT6
HU2.2
VBAT
1
VSSA/VREF-
12
VDDA/VREF+
13
VSS
18
VDD
19
VSS
31
VDD
32
VSS
47
VDD
48
VSS
63
VDD
64
SWD_IO
SWD_CK
VCC_EN OSC_IN
OSC_OUT
BOOT0
NRST
8MHz
HX1
OSC_IN
OSC_OUT
GND
BOOT0
GND
GND
GND
VCC3.3
VCC3.3
VCC3.3
GND
VCC3.3
GND
NRST
STM32L431最小系统
HH1
1
2
3
4
5
GND
VCC3.3
NRST
SWD_IO
SWD_CK
VBAT
100nF
HC2
100nF
HC3
100nF
HC4
100nF
HC8
100nF
HC10
100nF
HC11
100nF
HC7
10K
HR7
100K
HR3
100K
HR8
1M
HR5
10pF
HC1
10pF
HC12
510
HR1
40Ω
HL1
1uF
HC5
VCC
HBEEP
+
S9012
HQ1
GND
HR2
1k
HR1
100
PC8
H7
3
1
2
U16
VCC
1
GND
2
TXD
3
RXD
4
RST
5
IO_0
6
PA9
PA10
PA9
PA10
GND
VCC3.3
PC8
VCC3.3
GND
PA0
PA1
GND
VCC3.3
H8
3
1
2
H9
3
1
2
GND
VCC3.3
PA8
SG90舵机
柔性多段水位传感器
滴液传感器
蜂鸣器 ESP8266 wifi模块
PA0
PA1
PA8