STM32F410- VCAP voltage not generated, Unable to find the target through ST-Link

[ndorugad]

 

Hello,

Above is the schematic for the board. I am facing issue for Target not found while connecting with ST-Link.

1. The Vcap1 voltage is 0.

2. What could be the reason for not getting 1.2v at C11. vcap_1 voltage?

 

Can you please refer the above diagram and suggest solution for the same?

[Tesla DeLorean]

Perhaps power input side issues, or ones of part orientation. 

[TDK]

Probably part orientation is wrong. Pin 1 is on the bottom left when text is oriented from left to right.

Is it powered? Official programmers do not provide power.

Perhaps upload a more legible schematic.

 

 

[ndorugad]

Hello Guru,

 

Here the attached schematic for the same.

[Tesla DeLorean]

Please provide a large,  clear and in-focus image of the part on the circuit board surrounding it.

Check the 3.3V supply at the side of the VCAP pin. Check Netlist.

Has this board worked previously? New batch? New F410 purchase?

[ndorugad]

What is the PDR level recommended, in my case i have connected the PDR to 3.3V. is it ok?

 

Also could you please check the schematic and help me to find the issue.

 

As we are switching from Renesas to STM32. i need to make it up on prio.

[STOne-32]

Dear @ndorugad ,

Also I suspect the same as @Tesla DeLorean  and @TDK , the device LQFP48 is soldered with a wrong orientation of pin 1. You need to solder it with 90 degree angle clockwise. PA0 in your case is confused with VCAP pin et.

Let us know ,

STOne-32

[ndorugad]

Find the reference image with pin 1 marked in red, please correct me if it is wrong.

[TDK]

You can also reference this document for part orientation:

Reference device marking schematics for STM32 microcontrollers and microprocessors - Technical note