reset on suspected power spikes/surges

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by mcu_programmer on Wed Jul 14 06:46:33 MST 2010
I have a board with a an LPC1112, power comes from the mains through a external power supply unit.

When I turn on a ceiling lamp in a neighbouring room the unit resets.

Question, do I need to pull up the reset pin externally? I have left the reset open since there is supposed to be an internal pull up by default at reset.