About NAbun.1

NAbun.1 · 2024-03-12

Hello,I am reading AN2606 and I am wondering if I am interpreting the document correctly. Is table 113 suggesting that the FDCAN bootloader is only available on pins PH13 & PH14 in the STM32H75 series? Since these pins do not exist on the 100 pin pac...

NAbun.1 · 2022-10-14

Per section 2.6 of RM0433 (https://www.st.com/resource/en/reference_manual/rm0433-stm32h742-stm32h743753-and-stm32h750-value-line-advanced-armbased-32bit-mcus-stmicroelectronics.pdf), when the STM32H7 boots up it latches the boot pin and then goes to...

NAbun.1 · 2022-09-20

Section 6.4.4 of RM0433 is the only place I could find that says what to do with VBAT rail when not using a battery. It says the following:If no external battery is used in the application, it is recommended to connect VBAT externally to VDD through ...

NAbun.1 · 2022-10-21

Hello Pavel. I was thinking about using an external flip flop to toggle a GPIO (not the boot pin to save that for the actual system bootloader) that an application bootloader could look at before choosing which image to jump to. The problem is that i...

NAbun.1 · 2022-10-18

Hello Pavel and Danish,Regardless of intention, the hope is to make a design as robust as possible.I am trying to protect againstCorrupt download over the airCorrupt writing of downloaded firmware into flashDownload and writing of incorrect (but tech...

NAbun.1 · 2022-09-23

Of course, my apologies. It is done now!

NAbun.1 · 2022-09-22

Thank you for the warm welcome! I am just getting into the STM32 micros and have a lot to learn.I believe you did answer my question, thanks!

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STM32 Bootloader Pin Availability

How does one design a circuit where an STM32H7 is never unrecoverable?

How to connect VBAT on STM32H7 when not using a battery?

Re: How does one design a circuit where an STM32H7 is never unrecoverable?

Re: How does one design a circuit where an STM32H7 is never unrecoverable?

Re: How to connect VBAT on STM32H7 when not using a battery?

Re: How to connect VBAT on STM32H7 when not using a battery?