Hi Bob, On Fri, Mar 11, 2011 at 12:24 AM, Bob Blick wrote: > On Fri, 11 Mar 2011 00:11 +0530, "Manu Abraham" wrote: >> Hi, >> >> With an 18F4550, is it necessary to pullup /MCLR with the 10k resistor >> when using ICD2 in debug mode ? > > Hi Manu, > > I don't know if there is an official published schematic for the ICD2, > but the schematics I have seen for it do not float /MCLR under any > conditions. So I would say in that case you are OK not having a pullup > on your target. Thanks, for the detail; Just to make myself feel a bit safer: even in those cases, where /MCLR is not floated, does it hurt if there is the regular 10k pullup ? Best Regards, Manu --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .