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UM1668
Connectors
69
3.7 RS-232
connector
CN8
Figure 12. RS-232 connector (front view)
3.8
USB OTG2 HS Micro-AB connector CN9
Figure 13. USB OTG2 HS Micro-AB connector CN9 (front view)
Table 22. RS-232 connector CN8 with ISP support
Pin number
Description
Pin number
Description
1
NC
6
NC
2
RS232_RX (PA10)
7
NC
3
RS232_TX (PA9)
8
NC
4
NC
9
NC
5
GND
-
-
069
Table 23. USB OTG HS Micro-AB connector CN9
Pin number
Description
Pin number
Description
1
VBUS 4
ID
2
D-
5
GND
3
D+
-
-
3LQ
069
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