Hardware description
UM1872
8/21
DocID027622 Rev 2
Note: Opt = Optional connection
3.2
SPI and GPIO connection options
Table 5
shows the SPI and GPIO connection options between the STM32 and SPIRIT1
hosted on the SPSGRF module. These can be used to enable different configurations in
cases where a signal conflict occurs when using with other expansion board.
Table 4. Right connector connection details
Si
g
n
a
l
n
a
m
e
D
1
5
D
1
4
A
R
EF
G
N
D
D
1
3
D
1
2
D
1
1
D
1
0
D
9
D
8
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
Right connector
C
o
n
n
e
c
to
r
n
a
m
e
CN5 Digital
CN9 Digital
Pi
n
#
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
N
U
C
L
EO
-L
0
5
3
R
8
M
C
U
p
o
rt
PB8
PB9
P
A5
P
A6
P
A7
PB6
PC
7
P
A9
P
A8
PB1
0
PB4
PB5
PB3
P
A1
0
P
A2
P
A3
N
U
C
L
E
O
-L
0
5
3
R
8
M
C
U
s
ig
n
a
ls
I2
C
1
_
SC
L
I2
C
1
_
SD
A
A
VD
D
G
ro
u
n
d
SPI
1
_
SC
K
SPI
1
_
M
ISO
T
IM
2
2
_
C
H
2
SPI
1
_
C
S
T
IM
2
2
_
C
H
2
T
IM
2
_
C
H
3
T
IM
2
2
_
C
H
1
T
IM
2
_
C
H
2
_
SC
K
U
SAR
T
2
_
T
X
U
S
AR
T
2
_
R
X
X-
N
U
C
L
EO
-I
D
S0
1
Ax
Ex
p
a
n
s
io
n
b
o
a
rd
s
s
ig
n
a
ls
G
N
D
C
L
K
(O
p
t)
M
ISO
(
SPI
R
IT
1
)
M
O
SI
(SPI
R
IT
1
)
SPI
R
IT
1
_
C
Sn
SPI
R
IT
1
_
G
PI
O
3
EEP
R
O
M
_
n
S
L
E
D
1
C
L
K
SD
n
