lpcware

Can't communicate with a LPC11A04UK

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by keithco on Tue Oct 29 09:25:14 MST 2013
We have not been able to connect, via SWD to any of our 15 boards that utilize the LPC11A04UK  WLCSP-20 part.
I screams that the processors are dead.
Convinced the first assembly shop damaged the parts, we sent 5 boards out to a different assembly shop and had them remove and reinstall new parts with the same result. |(
See attached schematic and screen shots of the what we are getting every time.
Please let us know if you see anything suspicious...

Forgot to mention, J1 does have a ground connection (not shown) in this pic.

Thanks,

Keith

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