Interface; Table 23. Rs-232 Uart Related Jumpers (Pa2/Pa3: Bootloader); Table 24. Rs-232 Connector Cn9 With Isp Support; Figure 22. Rs-232 Connector Cn9 - ST STM32H7B3I-EVAL User Manual

RS-232 UART on PA2/PA3
Important: Audio I2S6, USB HS, and motor control cannot be used with VCP UART PA2/PA3.
Hardware modifications are listed in
PA2 (MCU TX)
PA3 (MCU RX)
6.6.4

Interface

Pin number
1
2
3
4
5
UM2662 - Rev 1
Table 23:
Table 23. RS-232 UART related jumpers (PA2/PA3: Bootloader)
Pin name
Figure 22.
Table 24. RS-232 connector CN9 with ISP support
Description
NC
RS232_RX (PB15 or PA3)
RS232_TX (PB14 or PA2)
NC
GND
Setting
JP21 / SB42
JP39 / SB50
JP20 / SB41
JP40 / SB49
RS-232 connector CN9
Pin number
6 Bootloader_BOOT0
7 NC
8 Bootloader_RESET
9 NC
UM2662
RS-232 UART
STLINK-V3E VCP (Bootloader)
OFF
ON
OFF
ON
Description
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