> For the complete documentation index, see [llms.txt](https://tk233.gitbook.io/notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tk233.gitbook.io/notes/stm32/getting-started-stm32-edition/pinout-quick-reference.md).

# Pinout Quick Reference

STM32H755ZI Nucleo Board

UART: USART3 PD8, PD9

<figure><img src="/files/huQ2jnE24H3GrNNHrewI" alt=""><figcaption></figcaption></figure>