[STM32F769 ]Error: Flash Download failed - ''Cortex-M7''

[AlbertC]

Hi all,

 

I used the same setting and the same software, keil uVision5. The only different is use my own board rather than EVB, STM32F769I-EVAL. BTW, I use my own board and STM32 ST-Link utility.

Sometimes I can successfully go to debug mode, but sometimes I can't.

 

My question is why keil uVision5 shows 'Error: Flash Download failed - ''Cortex-M7'''.

 

I had erased first then rebuild finished, the next step is starting debug session. Unlucky, it shows error.

 

May need your support on this issue, thank you.

[mƎALLEm]

Hello,

You need to check your hardware of your own board. Check the VCAPx pins voltage and compare them to what was stated in the datasheet:

Check also the power supply VDD.

Did you refer to the documentation like AN4661 when you started to design your board (see Figure 24 for reference design)?