
describes the hardware configuration for the RS-232 interface.
Table 27.
Hardware I/O configuration for the RS-232 interface
I/O
Hardware
Setting
Configuration
PG7
JP10
[1-2]
PG7 LPUART1_TX is NOT connected to the RS-232 transceiver
PG7 is used as LPBAM I2C or UCPD_FRSCC2
[2-3]
PG7 LPUART1_TX is connected to the RS-232 transceiver.
PG8
JP11
[1-2]
PG8 LPUART1_RX is NOT connected to the RS-232 transceiver
PG8 is used as LPBAM I2C or UCPD_PWR
[2-3]
PG8 LPUART1_RX is connected to the RS-232 transceiver.
PB13
JP12
OFF
PB13: LPUART1_CTS is not connected to the RS-232 transceiver. PB13
can be used for TSC.
ON
PB13: LPUART1_CTS is connected to the RS-232 transceiver
PG6
SB38
OFF
PG6: LPUART1_RTS is not connected to the RS-232 transceiver. PG6 can be
used for UCPD_FRSCC1
ON
PG6: LPUART1_RTS is connected to the RS-232 transceiver
1. The default configuration is in bold.
shows the CN6 RS-232 connector pinout.
Figure 23.
CN6 RS-232 connector pinout
STM32U575I-EV
RS-232 port
UM2854
-
Rev 1
page 43/105