DocID026902 Rev 3
41/58
UM1817
STM32091C-EVAL IO assignment
57
68
PA9
RS-232/RS-485/irDA/8x_USART1_TX
69
PA10
RS-232/RS-485/irDA/8x_USART1_RX
70
PA11
RS232_USART1_CTS
71
PA12
RS232_USART1_RTS / RS485_DIR
72
PA13
SWDAT
73
PF6
-
74
VSS_4
VSS
75
VDDIO2
VDDIO2
76
PA14
SWCLK
77
PA15
-
78
PC10
8x_USART4_TX
79
PC11
8x_USART4_RX
80
PC12
ST-Link_USART5_TX
81
PD0
CAN_RX
82
PD1
CAN_TX
83
PD2
ST-Link_USART_RX
84
PD3
-
85
PD4
-
86
PD5
8x_USART2_TX
87
PD6
8x_USART2_RX
88
PD7
Smartcard_CK
89
PB3
8x_USART5_TX
90
PB4
8x_USART5_RX
91
PB5
TempSensor_INT I2C1_SMBA
92
PB6
TempSensor/HDMI/RF_I2C1_SCL
93
PB7
TempSensor/HDMI/RF_I2C1_SDA
94
PF11 + BOOT0
BOOT0
95
PB8
ACP_RST
96
PB9
IR_OUT
97
PE0
LED1
98
PE1
LED2
99
VSS_1
VSS
100
VDD_1
VDD
Table 31. I/O assignment (continued)
Pin No.
Pin name
STM32091C-EVAL IO assignment