Patent ID: 7948328
Filing Date: 2011-05-24
Classification: H03K

Abstract:
1. An oscillator comprising: a reference voltage generator generating a reference voltage; a first output voltage generator generating a first output voltage going high or low in response to the reference voltage and a second internal clock signal, wherein the first voltage output generator comprises: a second output voltage generator generating a second output voltage complementary to the first input signal in response to the reference voltage and a first internal clock signal complementary to the second internal clock signal, wherein the second voltage output generator comprises: a logic combination circuit logically combining the first and second output voltages to generate the first and second internal clock signals, wherein one of the first and second output voltages going high is provided to the logic combination circuit before the other one of the first and second output voltages going low, the respective outputs of the first and second comparators are initialized at complementary logic levels by the first and second initializing circuits, and the first and second pull-up circuits are configured to operate without an applied power supply voltage following initialization of the first and second comparators by the first and second initializing circuits.