> Basically, it seems to say that the "overhead" of having the PIC > running at all is relevant, and therefore the economy with lower > speeds is not quite proportional In the case of 32k vs 20MHz there's a 1:610 reduction in speed but only a (guesstimate) 1:96 reduction in consumption. For the older style 877 anyway. I'm sure the figures would be better for nW parts -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist