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OM13077 Target SWD Debug Port - ISP Pin missing

Question asked by Simon Wyss on Jul 29, 2017
Latest reply on Jul 31, 2017 by jeremyzhou

On the OM13077 Development kit, the ISP Pin on the SWD Debug Port is missing. The SWD Header has no pin on position 7!!!

 

Found this issue while trying to debug / flash a LPC54120 which wasn't responding.
I tried the solutions from the FAQ but no one was working. Then I checked the ISP connection to my board and noticed, that the ISP pin was never pulled low.

 

I had to connect the ISP (pin 7) manually to my target board.

 

Thank you NXP, I had some fun debugging, why my target doesn't want to respond. (There was no single note for this issue)

 

FAQ for target not responding and Debug
Regaining debug access to target MCU 
ISP Reset over debug 

Design Considerations for Debug 

 

 

 

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