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Sbira.2
Sbira.2
Associate
Jan 4, 2021 4:45 AM UTC
Solved

STM32F429 controller is Reset when Power ON the Instrument

I use STM32F429BIT6 controller in our instrument. When Power is ON after initialization STM32F429 controller is Reset. This happen only Once time after power on the instrument. It is not continuous reset.

What can i do

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Peter BENSCH
Peter BENSCHBest answer
ST Technical Moderator
Jan 5, 2021 8:48 AM UTC

You're welcome!

When it works for you and your question is answered, please close this topic by choosing Select as Best. This will help other users find that answer faster.

Good luck!

/Peter

In order 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.
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3 replies

Peter BENSCH
Peter BENSCH
ST Technical Moderator
Jan 4, 2021 9:40 AM UTC

It it not necessary to use an external reset device due to the internal reset circuitry. Please try to remove:

  • R3, R6 (10k)
  • U3

After you've done this, only the reset buttons SW1 and C14 (100nF) are connected to NRST, which is fully sufficient.

/Peter

In order 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.
Sbira.2
Sbira.2Author
Associate
Jan 5, 2021 5:24 AM UTC

Thank you

Peter BENSCH
Peter BENSCHBest answer
ST Technical Moderator
Jan 5, 2021 8:48 AM UTC

You're welcome!

When it works for you and your question is answered, please close this topic by choosing Select as Best. This will help other users find that answer faster.

Good luck!

/Peter

In order 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.
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