Patent ID: 6429724
Filing Date: 2002-08-06
Classification: H02M

Abstract:
A semiconductor device provided on a semiconductor substrate and having first and second operation modes, comprising:an insulator film provided on said semiconductor substrate; a first power supply node receiving a first power supply potential; a first switching circuit connected between said first power supply node and a first internal node and brought into non-conducting and conducting states respectively in said first and second operation modes; a first output node outputting a first output potential; a second switching circuit connected between said first internal node and said first output node and brought into the conducting and non-conducting states respectively in said first and second operation modes; a second power supply node receiving a second power supply potential lower than said first power supply potential; a third switching circuit connected between said second power supply node and a second internal node and brought into the conducting and non-conducting states respectively in said first and second operation modes; a second output node outputting second output potential; a fourth switching circuit connected between said second internal node and said second output node and brought into the non-conducting and conducting states respectively in said first and second operation modes; and a voltage generating portion connected between said first internal node and said second internal node and driving a potential at said second internal node to a potential higher than at said first internal node, said voltage generating portion including a rectifying circuit having a plurality of rectifying elements serially connected between said first internal node and said second internal node to have the forward direction from said first internal node to said second internal node on a path from said first internal node to said second internal node, and each of said rectifying elements being formed on said insulator film.