LPC4350 issues

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by tom.varghese on Fri Apr 06 08:26:21 MST 2012
Hello All,

We built an LP4350 board as prototype and have run into some very fundamental issues.  This could be because this is our first NXP device or we didn't read the documentation/FAQs adequately.  So I apologize if this is obvious to you.

So here is what we have run into:

1) 12MHz crystal won't oscillate, we tried different caps, etc. We tried the resonator that was used on an eval board, etc.  We then put a 12MHz oscillator, now the chip seems to be up and running, at least LPCExpresso is able to download code into RAM and run.
2) 32.768KHz crystal won't oscillate, tried a variety of caps, etc.
3) We tried to boot off of SPI flash, but no luck on that either.

We really need to get this design working, if there are any professionals that are willing to work with us for a short period to get this going, that would be great.

Thanks in advance for any help.

--Tom V.