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ULINK: Using LPCXpresso boards with ULINK2

Information in this knowledgebase article applies to:

  • ULINK2 Debug Adapters


I'm trying to use my ULINK2 adapter with an LPCXpresso LPC800 board, but when I try to connect to the target, I get:

SWD Communication Failure

How can I get ULINK2 to work with the LPCXpresso LPC800 board?


The LPCXpresso LPC800 board does not supply VCC to pin 1 on the 10-pin J5 connector. To use ULINK2 with this board, you must make sure the jumper inside the ULINK2 adapter is in the 3,3V position.



  • Refer to Jumpers in the ULINK2 User's Guide.

Last Reviewed: Friday, February 8, 2013

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