Pin Map STM32 Open IoT and IIoT Gateways (P10 - P12) CGM Rev. 3.1 Element Connection LED Power LED +3V3 LED1 PG6 LED2 PH14 LED3 PA10 LED4 PH12 LED5 PI9 ST3232BTR_1 UART RS232 Transceiver (P10 & P11) T1_IN USART1_TXD T2_IN USART6_TXD T1_OUT TXD1 T2_OUT TXD2 R1_IN RXD1 R2_IN RXD2 R1_OUT USART1_RXD R2_OUT USART6_RXD V+ C7 (100nF) V- C8 (100nF) C1+ C5 (100nF) C1- C5 (100nF) C2+ C6 (100nF) C2- C6 (100nF) ESDA25-4BP6 ESD protection I/O_1 RXD2 I/O_2 TXD1 I/O_3 RXD1 I/O_4 TXD2 GND FGC ST3232BTR_2 UART RS232 Transceiver (P10) T1_IN USART3_TXD T2_IN UART7_TXD T1_OUT B_4 T2_OUT B_3 R1_IN A_4 R2_IN A_3 R1_OUT USART3_RXD R2_OUT UART7_RXD V+ C64 (100nF) V- C65 (100nF) C1+ C57 (100nF) C1- C57 (100nF) C2+ C50 (100nF) C2- C50 (100nF) ESDA25-4BP6 ESD protection I/O_1 - I/O_2 - I/O_3 B_4 I/O_4 A_4 GND FGC MAX481CSA_1 UART RS485 Transceiver (P12) DI USART1_TXD DE RS485_DRIVER_ENABLE1 RE/ RS485_RECEIVER_ENABLE1 RO USART1_RXD A TXD1 B RXD1 MAX481CSA_2 UART RS485 Transceiver (P12) DI USART6_TXD DE RS485_DRIVER_ENABLE2 RE/ RS485_RECEIVER_ENABLE2 RO USART6_RXD A TXD2 B RXD2 MAX481CSA_3 UART RS485 Transceiver (P11 & P12) DI USART3_TXD DE RS485_DRIVER_ENABLE3 RE/ RS485_RECEIVER_ENABLE3 RO USART3_RXD A A_3 B B_3 MAX481CSA_4 UART RS485 Transceiver (P11 & P12) DI UART7_TXD DE RS485_DRIVER_ENABLE4 RE/ RS485_RECEIVER_ENABLE4 RO UART7_RXD A A_4 B B_4 USBLC6-2P6 ESD protection VCC VBUS_ADC, MICROUSB_B_U254-051T-4BH83-F1S (PIN1) GND GND IO1_A MICROUSB_B_U254-051T-4BH83-F1S (PIN2) IO2_A MICROUSB_B_U254-051T-4BH83-F1S (PIN3) IO1_B BOOTLOADER_TX IO2_B BOOTLOADER_RX Serial EEPROM M24C08-RMC6TG E0 GND E1 GND E2 +3V3 VSS GND VCC +3V3 WC/ GND SCL I2C1_SCL SDA I2C1_SDA Serial Flash A25LQ64M CS# SPI2_SS SO SPI2_MISO WP# SPI2_W VSS GND VCC +3V3 HOLD# SPI2_IO3 SCLK SPI2_SCK SI SPI2_MOSI IP101GRI ETHERNET PHY transceivers MDC ETH_MDC MDIO ETH_MDIO MDI_TP TXD+ MDI_TN TXD- MDI_RP RXD+ MDI_RN RXD- X2 - X1 ETH_MCO RESET_N ETH_RESET_N ISET ETH_ISET LED0/PHY_AD0 ETH_LED0/PHY_AD0 LED3/PHY_AD3 ETH_LED3/PHY_AD3 TEST_ON - REGOUT C23 (100 nF), C29 (10 uF) VDDIO +3V3 AVDD33 +3V3 GND GND TXEN ETH_TX_EN TXER/FXSD - TXCLK/50M_CLKI ETH_RMII_REF_CLK TXD0 ETH_TXD0 TXD1 ETH_TXD1 TXD2 - TXD3 - RXDV/CRS_DV/FX_HEN ETH_RXDV/CRS_DV RXCLK/50M_CLKO - RXD0 ETH_RXD0 RXD1 ETH_RXD1 RXD2 - RXD3 - RXER/INTR_32 - COL/RMII ETH_COL/RMII CRS/LEDMOD - STM32 F439NIH6 PA0 - PA1 ETH_RMII_REF_CLK PA2 ETH_MDIO PA3 - PA4 - PA5 - PA6 SWITCH PA7 ETH_RXDV/CRS_DV PA8 ETH_MCO PA9 BUZZER_PWM PA10 LED_A3 PA11 USB_DM BOOTLOADER_RX PA12 USB_DP BOOTLOADER_TX PA13 JTMS PA14 JTCK PA15 CONF2 PB0 ETH_LED0/PHY_AD0 PB1 ETH_LED3/PHY_AD3 PB2 BOOT1 PB3 SW0 PB4 USART1_RXD PB5 USART1_TXD PB6 USART1_TXD PB7 USART1_RXD PB8 I2C1_SCL PB9 I2C1_SDA PB10 USART3_TXD PB11 USART3_RXD PB12 USART3_RXD PB13 USART3_TXD PB14 - PB15 - PC0 SD_NWE PC1 ETH_MDC PC2 - PC3 - PC4 ETH_RXD0 PC5 ETH_RXD1 PC6 USART6_TXD PC7 USART6_TXD PC8 CONF4 PC9 CONF1 PC10 BOOTLOADER_TX PC11 BOOTLOADER_RX PC12 CONF3 PC13 RTC_AF1 PC14 OSC32_IN PC15 OSC32_OUT PD0 D2 PD1 D3 PD2 CONF6 PD3 - PD4 NOR_NOE PD5 NOR_NWE PD6 NOR_NWAIT PD7 NOR_NE1 PD8 D13 PD9 D14 PD10 D15 PD11 A16 PD12 A17 PD13 A18 PD14 D0 PD15 D1 PE0 SD_LDOM PE1 SD_UDOM PE2 - PE3 A19 PE4 A20 PE5 A21 PE6 - PE7 D4 PE8 D5 PE9 D6 PE10 D7 PE11 D8 PE12 D9 PE13 D10 PE14 D11 PE15 D12 PF0 A0 PF1 A1 PF2 A2 PF3 A3 PF4 A4 PF5 A5 PF6 UART7_RXD PF7 UART7_TXD PF8 VBUS_ADC PF9 L2 PF10 L1 PF11 SD_NDRAS PF12 A6 PF13 A7 PF14 A8 PF15 A9 PG0 A10 PG1 A11 PG2 A12 PG3 A13 PG4 A14 PG5 A15 PG6 LED_A1 PG7 DIP_SWITCH PG8 SD_CLK PG9 USART6_RXD PG10 USART6_RXD PG11 ETH_TXEN PG12 - PG13 ETH_TXD0 PG14 ETH_TXD1 PG15 SD_NCAS PH0 OSC+IN PH1 OSC_OUT PH2 SD_CKE0 PH3 SD_NE0 PH4 I2C2_SCL PH5 I2C2_SDA PH6 - PH7 - PH8 RS485_DRIVER_ENABLE1 PH9 RS485_RECEIVER_ENABLE1 PH10 RS485_DRIVER_ENABLE2 PH11 RS485_RECEIVER_ENABLE2 PH12 LED_A4 PH13 - PH14 LED_A2 PH15 CONF5 PI0 WP#//ACC PI1 SPI2_SCK PI2 SPI2_MISO PI3 SPI2_MOSI PI4 SPI2_W PI5 SPI2_IO3 PI6 ETH_RST PI7 RS485_DRIVER_ENABLE3 PI8 RS485_RECEIVER_ENABLE3 PI9 LED_5 PI10 RS485_TERMINATION_ENABLE4 PI11 RS485_TERMINATION_ENABLE3 PI12 SPI2_SS PI13 - PI14 RS485_RECEIVER_ENABLE4 PI15 RS485_DRIVER_ENABLE4 Optional Element Connection HTS221 VDD +3V3 CS +3V3 GND GND SCL/SPC I2C2_SCL SDA/SDI/SDO I2C2_SDA DRDY - LIS3DH VDD_IO +3V3 NC - NC - SCL/SPC I2C2_SCL GND GND SDA/SDI/SDO I2C2_SDA SDO/SAO - CS +3V3 ADC1 - ADC2 - VDD +3V3 ADC3 - GND GND INT1 - RES GND INT2 - LSM6DS33 GND, GND, RES, RES, RES, RES GND INT1 - INT2 - VDDIO +3V3 SCL I2C2_SCL SDA I2C2_SDA SDO - CS +3V3 NC - RES GND VDD +3V3 SI7006-A20/SI7020-A20 SDA I2C2_SDA SCL I2C2_SCL GND GND VDD +3V3 DNC1 - DNC2 -