OSCILLATION CIRCUIT, ELECTRONIC CIRCUIT, AND SEMICONDUCTOR DEVICE, CLOCK, AND ELECTRONIC APPARATUS WHICH COMPRISE THESE CIRCUITS

Title:

OSCILLATION CIRCUIT, ELECTRONIC CIRCUIT, AND SEMICONDUCTOR DEVICE, CLOCK, AND ELECTRONIC APPARATUS WHICH COMPRISE THESE CIRCUITS

Document Type and Number:

WIPO Patent Application WO/2002/027916

Kind Code:

A1

Abstract:

An oscillation circuit which can oscillate at a stable frequency without undergoing fluctuation in the power source voltage of a main power source. An electrostatic protection circuit (200) provided in an oscillation circuit (40) comprises a first electrostatic protection circuit section (210) connected between a signal line and a constant voltage (V¿reg?) to bypass a first-polarity electrostatic voltage penetrating into the signal line to the bypassing constant voltage (V¿reg?) side via a diode (72), and a second electrostatic protection circuit section (220) connected between the signal line and the ground side to bypass a second-polarity electrostatic voltage penetrating into the signal line to the ground via a diode (74).

Inventors:

YABE HIROSHI
NAKAMIYA SHINJI
KADOWAKI TADAO
MAKIUCHI YOSHIKI

Application Number:

PCT/JP2001/008393

Publication Date:

April 04, 2002

Filing Date:

September 26, 2001

Export Citation:

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Assignee:

SEIKO EPSON CORP (JP)

International Classes:

G04F5/04; H03B5/04; H03B5/36; (IPC1-7): H03B5/32; G04G1/00; H03B5/04

Domestic Patent References:

WO1998039693A1

1998-09-11

Foreign References:

JPH09205325A	1997-08-05
JPH088651A	1996-01-12
JPH10160867A	1998-06-19
JPH11289222A	1999-10-19
JPH07183774A	1995-07-21
JPS5098263A	1975-08-05

Other References: