Patent Number: 7,088,196

Title: Oscillation circuit and electronic equipment comprising semiconductor integrated device with clock function including the oscillation circuit

Abstract: The present invention provides an oscillation circuit which enables a further decrease of power consumption. The oscillation circuit comprises a piezoelectric oscillator, such as a quartz oscillator, for generating voltage that oscillates at a natural frequency, an inverter for amplifying this oscillation voltage, a Schmitt trigger circuit for shaping the waveform of the output of the inverter and outputting oscillation output signals, and a constant current source which is connected to a power supply line from a battery and supplies current to the power supply of the inverter and the Schmitt trigger circuit.

Inventors: Ashida; Hiroyuki (Kyoto, JP), Tsuji; Yasuhiko (Kyoto, JP)

Assignee: Rohm Co., Ltd.

International Classification: H03B 5/32 (20060101)

Expiration Date: 8/08/02018