Title:
SEMICONDUCTOR INTEGRATED CIRCUIT
Document Type and Number:
Japanese Patent JPH02126718
Kind Code:
A
Abstract:
PURPOSE: To prevent the influence of noise generation due to spurious radiation from inflicting on another circuit set together with a microcomputer by providing a means to multiply the frequency of an oscillator in the internal part.
CONSTITUTION: A microcomputer is provided on the same semiconductor substrate and a multiplier 4 to multiply the frequency of a basic clock supplied to the microcomputer is provided. The clock pulse inputted to the multiplier 4 is taken out from the multiplier 4 as a clock pulse having a double frequency and used as the basic clock of the microcomputer.
Inventors:
SUZUKI CHIKA
Application Number:
JP28186688A
Publication Date:
May 15, 1990
Filing Date:
November 07, 1988
Export Citation:
Assignee:
NEC CORP
International Classes:
H03K5/00; H03B19/00; (IPC1-7): H03B19/00; H03K5/00
Attorney, Agent or Firm:
Shin Uchihara