JPS63142453A - Semiconductor integrated circuit device - Google Patents

Semiconductor integrated circuit device

Info

Publication number
JPS63142453A
JPS63142453A JP28885286A JP28885286A JPS63142453A JP S63142453 A JPS63142453 A JP S63142453A JP 28885286 A JP28885286 A JP 28885286A JP 28885286 A JP28885286 A JP 28885286A JP S63142453 A JPS63142453 A JP S63142453A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
operation
calculation
generate
operated
microcomputer
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
JP28885286A
Inventor
Masato Akimoto
Original Assignee
Hitachi Ltd
Hitachi Micro Comput Eng 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

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing
    • Y02D10/10Reducing energy consumption at the single machine level, e.g. processors, personal computers, peripherals or power supply
    • Y02D10/12Reducing energy consumption at the single machine level, e.g. processors, personal computers, peripherals or power supply acting upon the main processing unit

Abstract

PURPOSE: To reduce power consumption by selectively operating first and second oscillating circuits in accordance with an operation mode to generate a display timing signal.
CONSTITUTION: Only one of two oscillating circuits OSC1 and OSC2 is selectively operated in accordance with the operation mode of a microcomputer. For example, when the microcomputer performs the operation like calculation, the oscillating circuit OSC1 is operated to generate a clock signal required for this calculation and a timing signal required for the operation of a liquid crystal clock circuit. When the microcomputer does not perform the operation like calculation, the oscillating circuit OSC2 is operated to generate a timing signal required for the display operation and the operation of a timer circuit.
COPYRIGHT: (C)1988,JPO&Japio
JP28885286A 1986-12-05 1986-12-05 Semiconductor integrated circuit device Pending JPS63142453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28885286A JPS63142453A (en) 1986-12-05 1986-12-05 Semiconductor integrated circuit device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28885286A JPS63142453A (en) 1986-12-05 1986-12-05 Semiconductor integrated circuit device

Publications (1)

Publication Number Publication Date
JPS63142453A true true JPS63142453A (en) 1988-06-14

Family

ID=17735579

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28885286A Pending JPS63142453A (en) 1986-12-05 1986-12-05 Semiconductor integrated circuit device

Country Status (1)

Country Link
JP (1) JPS63142453A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0486788A (en) * 1990-07-30 1992-03-19 Mitsubishi Electric Corp Microcomputer
US6535985B1 (en) 1990-03-23 2003-03-18 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US6782483B2 (en) 1990-03-23 2004-08-24 Matsushita Electric Industrial Co., Ltd. Data processing apparatus

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7821489B2 (en) 1990-03-23 2010-10-26 Panasonic Corporation Data processing apparatus
US6535985B1 (en) 1990-03-23 2003-03-18 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US6782483B2 (en) 1990-03-23 2004-08-24 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US6792552B2 (en) 1990-03-23 2004-09-14 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US6795929B2 (en) 1990-03-23 2004-09-21 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US6804791B2 (en) 1990-03-23 2004-10-12 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US6839855B2 (en) 1990-03-23 2005-01-04 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US6882389B2 (en) 1990-03-23 2005-04-19 Matsushita Electric Industrial Co., Ltd. Transflective LCD device with different transmission parts each having a particular transmittance
US6909483B2 (en) 1990-03-23 2005-06-21 Matsushita Electric Industrial Co., Ltd. Transflective LCD device with different transmission parts each having a particular transmittance
US6941481B2 (en) 1990-03-23 2005-09-06 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US6952787B2 (en) 1990-03-23 2005-10-04 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US6952248B2 (en) 1990-03-23 2005-10-04 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US6971037B2 (en) 1990-03-23 2005-11-29 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US6990595B2 (en) 1990-03-23 2006-01-24 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US7006181B2 (en) 1990-03-23 2006-02-28 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US7024572B2 (en) 1990-03-23 2006-04-04 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US7062667B2 (en) 1990-03-23 2006-06-13 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US7073084B2 (en) 1990-03-23 2006-07-04 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US7080272B2 (en) 1990-03-23 2006-07-18 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US7079108B2 (en) 1990-03-23 2006-07-18 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US7120809B2 (en) 1990-03-23 2006-10-10 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US7213162B2 (en) 1990-03-23 2007-05-01 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US7432921B2 (en) 1990-03-23 2008-10-07 Matsushita Electric Industrial Co., Ltd. Data processing apparatus
US7464281B2 (en) 1990-03-23 2008-12-09 Panasonic Corporation Data processing apparatus
US7548235B2 (en) 1990-03-23 2009-06-16 Panasonic Corporation Data processing apparatus
JPH0486788A (en) * 1990-07-30 1992-03-19 Mitsubishi Electric Corp Microcomputer

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