Kevin Olalde wrote: > > > If a 16F87x chip or 16F62x chip, is LVP enabled and the RB3 or RB4 bit > > tied low? > > On a '628, I've found I don't need to pull it low if I turn off LVP (but it > looks like one needs to use HVP to turn it back on). > > Still learning, does that sound correct? Yes, RB4 only needs to be pulled low if LVP is enabled, otherwise it is used as an IO pin. If you are using the 16F62x chip, did you disable the comparator? Probably more silly...but...what exactly is your code doing after it starts up. It could be locked up in a permanent loop somehow. -- Best regards Tony mICros http://www.bubblesoftonline.com mailto:sales@bubblesoftonline.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.