DocID026902 Rev 3
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UM1817
Connectors
57
3.8
RS-232 and RS-485 connector CN9
Figure 15. RS-232 and RS-485 connector CN9 (front view)
Table 24. microSD connector CN8
Pin number
Description
1
NC
2
SDcard_CS (PE12)
3
SDcard_DIN (PE15)
4
+3V3
5
SDcard_CLK (PE13)
6
Vss/GND
7
SDcard_DOUT (PE14)
8
NC
10
SDcard_detect (PE11)
Table 25. RS-232 and RS-485 connector CN9
Pin number
Description
1
NC
2
RS232_RX (PA10)
3
RS232_TX (PA9)
4
RS485_A
5
GND
6
Bootloader_BOOT0
7
RS232_RTS (PA12)
8
RS232_CTS (PA11)/Bootloader_RESET
9
RS485_B
06Y9