Patent Number: 7,612,624

Title: Resistor-capacitor oscillation circuit capable of adjusting oscillation frequency and method of the same

Abstract: An RC oscillation circuit and method capable of adjusting an oscillation frequency includes: an RC oscillator including a variable resistor and a variable capacitor, the RC oscillator generating an RC oscillating signal having a frequency determined by a resistance of the variable resistor and a capacitance of the variable capacitor; a counter counting a clock number of a reference oscillating signal corresponding to one period of the RC oscillating signal to generate a first count value, the reference oscillating signal having a preset frequency; and a frequency controller controlling a frequency of the RC oscillating signal by determining the resistance of the variable resistor and the capacitance of the variable capacitor such that a difference between the first count value and a preset second count value is smaller than a preset first critical value.

Inventors: Lim; Joon Hyung (Gyunggi-Do, KR), Park; Tah Joon (Gyunggi-Do, KR), Lee; Kwang Mook (Seoul, KR), Cho; Koon Shik (Seoul, KR)

Assignee: Samsung Electro-Mechanics Co., Ltd.

International Classification: H03K 3/02 (20060101)

Expiration Date: 1/03/02017