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UM1668
Connectors
69
3.2 Extension
connector CN2
Figure 8. Extension connector CN2 top view
Table 16. Extension connector CN2
Pin number
Pin name
I2C interface description
SPI interface description
1
PB9
I2C1_SDA
SPI3_CS
2
PC11
-
SPI3_MISO
3
PB6
I2C1_SCL
EXT_RESET
4
PC10
EXT_RESET SPI3_SCK
5
NC
-
-
6
PC12
-
SPI3_MOSI
7
GND
-
-
8
+5V
-
-
9
NC
-
-
10
NC
-
-
069
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