STM32CubeMX missing pin mux option for STM32F410CBU Posted by scarter on 2018-03-03 01:31 In the STM32F410 datasheet, it says that pins PB14 can be I2C4_SDA, and PB15 can be I2C4 SCL. However, in the STM32CubeMX, I2C4 is not an option for any pins.