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 was thinking:

                 5.5V
                  |
                  |
     -------------o
     |            |
     \            |
     /470         |
     \            |
     |    10      |
PIC--o---\/\/-- FET
                  |
                  |
                  |
                 Vcc to circuit

This would work for the 5.5V supply.  How do I do a 3.3V supply now?

I'm using a FET because of the load I'm drawing.

Thanks.

Andy

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