JPS5685128A - Processor with clock controlling function - Google Patents

Processor with clock controlling function

Info

Publication number
JPS5685128A
JPS5685128A JP16133279A JP16133279A JPS5685128A JP S5685128 A JPS5685128 A JP S5685128A JP 16133279 A JP16133279 A JP 16133279A JP 16133279 A JP16133279 A JP 16133279A JP S5685128 A JPS5685128 A JP S5685128A
Authority
JP
Japan
Prior art keywords
processor
frequency
clock
power consumption
terminals
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.)
Pending
Application number
JP16133279A
Other languages
Japanese (ja)
Inventor
Hiroshi Shimizu
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP16133279A priority Critical patent/JPS5685128A/en
Publication of JPS5685128A publication Critical patent/JPS5685128A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

  • Power Sources (AREA)
  • Microcomputers (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

PURPOSE: To reduce the power consumption of a processor with a simple constitution of circuit, by controlling the frequency of the clock with the control signal supplied from the processor having the cycle speed corresponding to the clock frequency.
CONSTITUTION: When performing the process of the high-speed terminal 3, the processor 1 makes the clock frequency control circuit 2 select the high frequency clock 6 by the control output 9. In the same way, the intermediate and low frequency clocks 7 and 8 are selected respectively in case the intermediate and low speed terminals 4 and 5. As a result, the machine cycle frequency of the processor 1 becomes lower as the terminals 5, 4 and 3 are processed in that order. Accordingly, the power consumption of the processor 1 of CMOS decreases in the above-mentioned order.
COPYRIGHT: (C)1981,JPO&Japio
JP16133279A 1979-12-12 1979-12-12 Processor with clock controlling function Pending JPS5685128A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16133279A JPS5685128A (en) 1979-12-12 1979-12-12 Processor with clock controlling function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16133279A JPS5685128A (en) 1979-12-12 1979-12-12 Processor with clock controlling function

Publications (1)

Publication Number Publication Date
JPS5685128A true JPS5685128A (en) 1981-07-11

Family

ID=15733063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16133279A Pending JPS5685128A (en) 1979-12-12 1979-12-12 Processor with clock controlling function

Country Status (1)

Country Link
JP (1) JPS5685128A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62166419A (en) * 1986-01-17 1987-07-22 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Multifrequency clock generator
JPS6370321A (en) * 1986-09-12 1988-03-30 Yokogawa Electric Corp Microprocessor
JPS6454133U (en) * 1987-09-29 1989-04-04

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62166419A (en) * 1986-01-17 1987-07-22 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Multifrequency clock generator
JPH0458048B2 (en) * 1986-01-17 1992-09-16 Intaanashonaru Bijinesu Mashiinzu Corp
JPS6370321A (en) * 1986-09-12 1988-03-30 Yokogawa Electric Corp Microprocessor
JPS6454133U (en) * 1987-09-29 1989-04-04

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