LPC2136 startup problem after jtag flash

Discussion created by lpcware Employee on Jun 15, 2016
Content originally posted in LPCWare by jhall0819 on Mon Jun 09 05:10:04 MST 2014

I have a LPC2136 based design. I develop with IAR and J-Link. Production programming used Segger J-Flash.
This design has been trouble free for years but a recent firmware upgrade has a strange problem.

A production unit is programmed with the Segger J-Flash. The code starts but resets almost immediately.
BUT when I connect the J-Link without the IAR IDE running (just the J-Link plugged in) the problem goes away and all is well forever after?

Any thoughts?