vccd pin is connected to 3.3v power instead of gnd

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EyLa_1625036
Level 3
Level 3
10 likes given 10 sign-ins 25 replies posted

hello guys,

   

i made a custom pcb using 

   

psoc4 CY8C4245LQI-483 ,

   

i manufactured 4 PCBs - i am trying to program with miniprog3 

   

in 3 of my custom circuits  i get the following error :

   

" Unable to acquire target device..." 

   

1 of my custom circuits seems to work flawlessly i can program it , debug , control gpio .

   

after double checking my schematic i saw an error , i accidently routed the  VCCD pin to 3.3v instead of  

   

connecting it to gnd (image of how i connected power is attached) , 

   

do you think this error is a critical design error ???  (i saw some desgins where u can connect it to 1.8v)

   

do you think this might be the problem ??

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rola_264706
Level 8
Level 8
50 likes received 25 likes received 10 likes received

Elampel: Here is the design manual for power and all other pins of the PSOC 4.

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hi bob ,

   

i saw this document , i know i have a mistake this pin(VCCD) should

   

be connected to gnd via CAP or to 1.8v via CAP and i connected

   

it to 3.3V.

   

the question is do you think this error is a critical error?

   

why is 1 of my custom PCBs is working just fine?

   

can is i disconnect this pin? 

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Bob_Marlowe
Level 10
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It is a similar situation: You find a sign-post "Do not step on the grass". Your experience says that stepping ongrass does not harm. But you may get caught by an authority.

   

When 1 board out of 4 does not work, I (personally) would consider the situation as "critical".

   

 

   

Bob

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