ST EVALSP320SPLC, User Manual, Page: 21 / 36

UM1509 Connectors
Doc ID 022703 Rev 2 21/36
5.9 RS-485 DB9 socket and header connector (CN11 and CN12)
Figure 14. RS-485 DB9 socket connector CN11 pinout
Figure 15. RS-485 header connector CN12 pinout
5.10 RS-232/UART0 DB9 plug connector (CN13)
Figure 16. RS-232/UART0 DB9 plug connector (CN13) pinout
Table 19. RS-485 DB9 socket connector CN11 description
Pin Description Pin Description
1 NC 6 +5.0 V
2 NC 7 NC
3 A 8 B
4 NC 9 NC
5 GND
Table 20. RS-485 header connector CN12 description
Pin Description Pin Description
1 +3.3 V 3 A
2 B 4 GND