DE69402787D1 - Mikroprozessor mit Taktsteuerungseinrichtung - Google Patents

Mikroprozessor mit Taktsteuerungseinrichtung

Info

Publication number
DE69402787D1
DE69402787D1 DE69402787T DE69402787T DE69402787D1 DE 69402787 D1 DE69402787 D1 DE 69402787D1 DE 69402787 T DE69402787 T DE 69402787T DE 69402787 T DE69402787 T DE 69402787T DE 69402787 D1 DE69402787 D1 DE 69402787D1
Authority
DE
Germany
Prior art keywords
microprocessor
control device
clock control
clock
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69402787T
Other languages
English (en)
Other versions
DE69402787T2 (de
Inventor
Katsunobu Hongo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Application granted granted Critical
Publication of DE69402787D1 publication Critical patent/DE69402787D1/de
Publication of DE69402787T2 publication Critical patent/DE69402787T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/324—Power saving characterised by the action undertaken by lowering clock frequency
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/08—Clock generators with changeable or programmable clock frequency
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/01—Details
    • H03K3/014—Modifications of generator to ensure starting of oscillations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
    • H03K3/03—Astable circuits
    • H03K3/0307—Stabilisation of output, e.g. using crystal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L3/00—Starting of generators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Microcomputers (AREA)
DE69402787T 1993-08-30 1994-08-22 Mikroprozessor mit Taktsteuerungseinrichtung Expired - Lifetime DE69402787T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21411793A JP3291569B2 (ja) 1993-08-30 1993-08-30 マイクロコンピュータ

Publications (2)

Publication Number Publication Date
DE69402787D1 true DE69402787D1 (de) 1997-05-28
DE69402787T2 DE69402787T2 (de) 1997-09-04

Family

ID=16650519

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69402787T Expired - Lifetime DE69402787T2 (de) 1993-08-30 1994-08-22 Mikroprozessor mit Taktsteuerungseinrichtung

Country Status (4)

Country Link
US (1) US5479644A (de)
EP (1) EP0642073B1 (de)
JP (1) JP3291569B2 (de)
DE (1) DE69402787T2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3505018B2 (ja) * 1994-11-22 2004-03-08 株式会社ルネサステクノロジ 半導体集積回路
US5588145A (en) * 1995-03-31 1996-12-24 Cirrus Logic, Inc. Method and arrangement for clock adjustment using programmable period binary rate multiplier
US5768571A (en) * 1996-08-29 1998-06-16 Vlsi Technology, Inc. System and method for altering the clock frequency to a logic controller controlling a logic device running at a fixed frequency slower than a computer system running the logic device
US6928559B1 (en) * 1997-06-27 2005-08-09 Broadcom Corporation Battery powered device with dynamic power and performance management
JP3072720B2 (ja) * 1997-07-11 2000-08-07 日本電気株式会社 情報処理装置
JPH11203421A (ja) * 1998-01-19 1999-07-30 Oki Electric Ind Co Ltd 半導体ディスク装置
US6118306A (en) * 1998-12-03 2000-09-12 Intel Corporation Changing clock frequency
US6272642B2 (en) 1998-12-03 2001-08-07 Intel Corporation Managing a system's performance state
JP2005102047A (ja) * 2003-09-26 2005-04-14 Renesas Technology Corp クロック入力回路
EP1865603B1 (de) * 2005-03-31 2011-10-12 Fujitsu Ltd. Taktauswahlschaltung und synthesizer
JP6276614B2 (ja) * 2014-03-10 2018-02-07 シチズン時計株式会社 電波時計

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2080585B (en) * 1980-07-22 1984-07-04 Tokyo Shibaura Electric Co Semiconductor integrated circuit with reduced power consumption
JPS5870336A (ja) * 1981-10-21 1983-04-26 Nec Corp 情報処理装置
US5041802A (en) * 1989-10-11 1991-08-20 Zilog, Inc. Low power oscillator with high start-up ability
US5089793A (en) * 1989-10-16 1992-02-18 Seiko Epson Corporation Semiconductor device having an oscillatory circuit
JP2716869B2 (ja) * 1990-11-29 1998-02-18 株式会社東芝 発振回路
KR930702819A (ko) * 1991-09-04 1993-09-09 아이자와 스스무 발진장치
US5155451A (en) * 1992-02-18 1992-10-13 Motorola, Inc. Circuit and method for dynamically generating a clock signal

Also Published As

Publication number Publication date
DE69402787T2 (de) 1997-09-04
JPH0764664A (ja) 1995-03-10
EP0642073A1 (de) 1995-03-08
US5479644A (en) 1995-12-26
EP0642073B1 (de) 1997-04-23
JP3291569B2 (ja) 2002-06-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition