On Wed, 12 May 1999 14:48:13 -0400 Andy Kunz writes: > I want to have a PIC switch it's power supply between 5.5V and 3.5V. Any > ideas? It needs to default to 5.5V on powerup. And it can only use 1 pin. I'm not sure if it would help, but ISTR one of the Maxim power converter chips has a 3.3/5V select pin- it runs from a supply of down to 1.5V, so it might be an easy solution. Nigel -- Nigel Orr Research Associate O ______ Underwater Acoustics Group, o / o \_/( Dept of Electrical and Electronic Engineering (_ < _ ( University of Newcastle Upon Tyne \______/ \(