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Associate
Oct 30, 2026 6:28 PM UTC
Question

STM32H523 - UART6 missing in CubeMX 6.18.1

The CubeMX doesn’t list USART6 peripheral for the STM32H523CEU6, although it should have been supported according to the datasheet and reference manual. It even says ‘4 USARTs’ in the device description in the CubeMX.

2 replies

Karl Yamashita
Principal
Oct 30, 2026 7:17 PM UTC

STM32CubeMX v6.16 is also missing USART6 for the STM32H523CEU6.

If a reply has proven helpful, click on Accept as Solution so that it'll show at top of the post.CAN Jammer an open source CAN bus hacking toolCANableV3 Open Source
ST Technical Moderator
Nov 2, 2026 7:25 AM UTC

 Hello ​@matevzb 

Let me thank you for posting.

I am currently checking this behavior and I will get back to you as soon as possible.

Thanks.

Mahmoud

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