Low power consumption MIS semiconductor device
First Claim
Patent Images
1. A semiconductor device comprising:
- a logic gate including, as a component, an insulated gate field effect transistor having a first gate insulating film, receiving a voltage on a first internal power node as an operating power supply voltage and processing a received signal;
a first switching transistor having a gate insulation film greater in thickness than said first gate insulation film, and electrically coupling a first power source node with said first internal power node responsive to a switch control signal; and
a precharge circuit selectively enabled in response to an operation mode instructing signal instructing a mode of operation of said logic gate and precharging said first internal power node to a prescribed voltage level different from the voltage level of said first power source node when enabled.
3 Assignments
0 Petitions
Accused Products
Abstract
A logic gate is constructed of an insulated gate field effect transistor (MIS transistor) having a thin gate insulation film. An operation power supply line to the logic gate is provided with an MIS transistor having a thick gate insulation film for switching the supply and stop of an operation power source voltage. A voltage of the gate of the power source switching transistor is made changing in an amplitude greater than an amplitude of an input and an output signal to the logic gate. Current consumption in a semiconductor device configured of MIS transistor of a thin gate insulation film can be reduced and an power source voltage thereof can be stabilized.
87 Citations
4 Claims
-
1. A semiconductor device comprising:
-
a logic gate including, as a component, an insulated gate field effect transistor having a first gate insulating film, receiving a voltage on a first internal power node as an operating power supply voltage and processing a received signal; a first switching transistor having a gate insulation film greater in thickness than said first gate insulation film, and electrically coupling a first power source node with said first internal power node responsive to a switch control signal; and a precharge circuit selectively enabled in response to an operation mode instructing signal instructing a mode of operation of said logic gate and precharging said first internal power node to a prescribed voltage level different from the voltage level of said first power source node when enabled. - View Dependent Claims (2, 3)
-
-
4. A semiconductor device comprising:
-
a logic gate including, as a component, an insulated gate field effect transistor having a first gate insulating film, receiving a voltage on a first internal power node as an operating power supply voltage and processing a received signal; a first switching transistor having a gate insulation film greater in thickness than said first gate insulation film, and electrically coupling a first power source node with said first internal power node responsive to a switch control signal; and a precharge circuit selectively enabled in response to an operation mode instructing signal instructing a mode of operation of said logic gate and precharging said first internal power node to a prescribed voltage level different from said operating power supply voltage level when enabled.
-
Specification