OM13077 Target SWD Debug Port - ISP Pin missing

simonwyss — Sat, 29 Jul 2017 20:35:51 GMT

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

Re: OM13077 Target SWD Debug Port - ISP Pin missing

jeremyzhou — Tue, 01 Aug 2017 02:00:46 GMT

Hi Simon Wyss,

Thank you for your interest in NXP Semiconductor products and

for the opportunity to serve you.
Getting Jumper JP1 opened, then try again.

Have a great day,

TIC

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topic Re: OM13077 Target SWD Debug Port - ISP Pin missing in LPC Microcontrollers

OM13077 Target SWD Debug Port - ISP Pin missing

Re: OM13077 Target SWD Debug Port - ISP Pin missing