DOES 3.3v and gnd short circuit brick stm32 ?

[Kishan Joshi]

I have custom board with minimal design only stm32 chip is there and couple necessary capacitors and due to some soldering issue, i got shorted with 3.3 and gnd .. accidentaly i powered it on and for debuging it was connected like this for 2 minutes. now stm32 is not communicating through swd. Did it brick stm32 by shorting 3.3 and gnd for a minute ?

[Kishan Joshi]

It is Stm32f765vit6. what level should it be on nrst and vcap ? . yes. boot0 pin is low.

[TDK]

Looks fine to me. Verify orientation is correct. Check for solder bridges. VCAP should be 1.2V. NRST should be high. BOOT0 should be low. Check for appropriate power draw.

[Kishan Joshi]

YES BOOT0 is low and nrst is having 3.3v but vcap2 is at zero. but vcap1 is at 50mv

[Kishan Joshi]

what should do to check power draw ?

[Kishan Joshi]

I might be wrong at orientation since dot is at bottom left and then print is forward

[Kishan Joshi]

 

It is totally different from the stm32cubeide dot is on bottom left

[Kishan Joshi]

Y1 is the crystal

[TDK]

Then that's your problem. Check part orientation, solder bridges. Replace with a new chip if necessary.

[Kishan Joshi]

oh is it wrong then ? should i follow the dot or text ? will it broken or should i use directly use new chip ?

[TDK]

https://electronics.stackexchange.com/questions/123703/which-of-these-marks-signifies-pin-1-on-the-stm32f-lqfp64