Pin Map
{{@264#bkmrk-open-iot-and-iiot-ga}}
CGM Rev. 3.1
| Element | Connection |
| LED | |
| Power LED | +3V3 |
|
LED1 |
GPIOG6 |
| LED2 | GPIOH14 |
| LED3 | GPIOA10 |
| LED4 | GPIOH12 |
| LED5 | GPIOI9 |
| 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 | - |