Internal pull-up and pull-down resistors on JTAG pins [STM32H743XGH6]

NiM · ‎2025-04-04

Does the STM32H743XGH6 have a pull-up/pulldown resistor built into the JTAG pin?

Is it necessary to add external resistors?

We ask this question because the AN4488 application note does not cover this product.

mƎALLEm · ‎2025-04-04

AN4938:

https://www.st.com/resource/en/application_note/an4938-getting-started-with-stm32h74xig-and-stm32h75xig-mcu-hardware-development-stmicroelectronics.pdf

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AScha.3 · ‎2025-04-04

It's internal, no need to have external resistors.

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NiM · ‎2025-04-04

Thank you for your response.

Do you know what document contains the above information?

mƎALLEm · ‎2025-04-04

AN4938:

https://www.st.com/resource/en/application_note/an4938-getting-started-with-stm32h74xig-and-stm32h75xig-mcu-hardware-development-stmicroelectronics.pdf

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.

NiM · ‎2025-04-04

Sorry for not pressing the “Accept as Solution” button.
I pity you that I could only press the button once.

I am very grateful to you.
I would be happy if you could help me in the future.

Thank you very much.

NiM · ‎2025-04-04

Your prompt response saved my life.

Thank you from the bottom of my heart.