| Allocation of GPIOs and EXTI interrupts | |
| PA0 WAKEUP EXTI0_IRQn | |
| PA1 WIRQ1 | |
| PA2 SW_USR EXTI2_IRQn (connected to INT_HUM too, but Humidity driver does not use it) | |
| PA3 WIRQ2 | |
| PA4 SPI1_NSS (slave) | |
| PA5 SPI1_SCK (slave) | |
| PA6 SPI1_MISO (slave) | |
| PA7 SPI1_MOSI (slave) | |
| PA8 I2C3_SCL | |
| PA9 UART1_TX | |
| PA10 UART1_RX | |
| PA11 EXT_GPIO0 EXTI15_10_IRQn | |
| PA12 EXT_GPIO1 EXTI15_10_IRQn | |
| PA13 SWDIO | |
| PA14 SWCLK | |
| PA15 INT_BARO EXTI15_10_IRQn | |
| PB0 I2S5_CK | |
| PB1 INT_ACCG EXTI1_IRQn | |
| PB2 LED1 (at reset it is used in input as BOOT1) | |
| PB3 INT_ALS EXTI3_IRQn | |
| PB4 I2C3_SDA | |
| PB5 INT_HALL EXTI9_5_IRQn | |
| PB6 I2C1_SCL (slave) | |
| PB7 I2C1_SDA (slave) | |
| PB8 I2S5_SD | |
| PB9 I2C2_SDA | |
| PB10 I2C2_SCL | |
| PB12 SPI2_NSS | |
| PB13 SPI2_SCK | |
| PB14 SPI2_MISO | |
| PB15 SPI2_MOSI | |
| PC13 LED0 |