ST STM32F407 - CPU Expansion Connections

 iSYSTEM, March 2021 4/8
CPU expansion connection
The target board exposes most of STM32F407 pins/signals, which allow easy expansion of the
development system.
U4 - ANALOG
U5 - COMMUNICATION
CPU
CPU pin
description
Connector
CPU pin
description
CPU
CPU
CPU pin
description
Connector
CPU pin
description
CPU
pin
number
pin
number
pin
number
pin
number
pin
number
pin
number
19
PF3
1
2
GND
/
/
3V3
1
2
3V3
/
20
PF4
3
4
GND
/
/
GND
3
4
GND
/
21
PF5
5
6
GND
/
116
PC7
5
6
PC6
115
24
PF6
7
8
GND
/
118
PC9
7
8
PC8
117
25
PF7
9
10
GND
/
/
GND
9
10
PI1
132
26
PF8
11
12
GND
/
134
PI3
11
12
PI2
133
27
PF9
13
14
GND
/
/
GND
13
14
PC10
139
28
PF10
15
16
GND
/
140
PC11
15
16
PC12
141
32
PC0
17
18
GND
/
/
GND
17
18
PD0
142
47
PA3
19
20
GND
/
143
PD1
19
20
PD3
145
50
PA4
21
22
GND
/
146
PD4
21
22
GND
/
51
PA5
23
24
GND
/
147
PD5
23
24
PD6
150
52
PA6
25
26
GND
/
151
PD7
25
26
PB5
164
56
PB0
27
28
GND
/
164
PB6
27
28
PB7
165
57
PB1
29
30
GND
/
/
GND
29
30
GND
/
/
GND
31
32
GND
/
/
FREE
31
32
FREE
/
/
FREE
33
34
FREE
/
/
FREE
33
34
FREE
/
/
FREE
35
36
FREE
/
/
FREE
35
36
FREE
/
/
FREE
37
38
FREE
/
/
FREE
37
38
FREE
/
/
FREE
39
40
FREE
/
/
FREE
39
40
FREE
/