Title:
マイクロコンピュータ
Document Type and Number:
Japanese Patent JP4487937
Kind Code:
B2
Abstract:
A microcomputer includes an oscillator for generating a clock signal having a frequency by using a CR circuit, a multiplier for outputting the clock signal having a multiplied frequency relative to the frequency generated by the oscillator based on data from an external source, a temperature detection unit for detecting temperature at a proximity of the CR circuit, a storage unit for storing data that enables the multiplied frequency of the clock signal in an output from the multiplier to have a constant value based on a temperature-dependent oscillation characteristic of the oscillator, and a control unit for setting a multiplication value for generating the multiplied frequency of the clock signal to the multiplier based on the data in the storage unit that is correlated to the temperature detected by the temperature detection unit.
Inventors:
Toshihiko Matsuoka
Hideaki Ishihara
Hideaki Ishihara
Application Number:
JP2006008633A
Publication Date:
June 23, 2010
Filing Date:
January 17, 2006
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H03L1/02
Domestic Patent References:
| JP7321644A | ||||
| JP2000068821A | ||||
| JP2002176315A | ||||
| JP8237113A | ||||
| JP5191274A |
Attorney, Agent or Firm:
Tsuyoshi Sato
Kiyoshi Ogawa
Kiyoshi Ogawa