> What is not perfectly clear is if the "Timer1 oacillator" > actualy is the *same* osc as "LFINTOSC". > > It's also not clear if they with "internal oscillator" > in section 6.4 means "HFINTOSC" (which *I* think) or > something else. The internal oscillator appears to be selectable between HF and LF. Both are distinct from the T1OSC pins and oscillator (Fig 4.1), so I'd say you could use T1OSC with either HF or LF -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist