Patent ID: 8299845
Filing Date: 2012-10-30
Classification: H03K

Abstract:
1. A semiconductor device comprising: a first circuit coupled to a first terminal, the first circuit being operable by a first voltage supplied from the first terminal; a second circuit coupled through a first resistive element to the first terminal, the second circuit being operable by a second voltage supplied through the first resistive element from the first terminal, the second voltage being smaller in absolute value than the first voltage; and a first voltage dividing circuit coupled to a first node between the first resistive element and the second circuit, the first voltage dividing circuit having a conductive state and a non-conductive state, the first voltage dividing circuit being kept in the conductive state while applying the first voltage to the first terminal to allow the first circuit to operate by the first voltage, wherein the second circuit comprises a first transistor including a first gate, and the first gate is coupled to the first node.