> 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/connectivity/fdcan.md).

# FDCAN

The STM32 G series supports FDCAN, which is a more advanced version of CAN that features a higher data rate and larger data frame sizes.

FDCAN can be configured to be backward-compatible with CAN2.0.

<figure><img src="/files/EDWhahosC21LMgg5hSIr" alt=""><figcaption></figcaption></figure>