JPS5760429A - Microcomputer controlling circuit - Google Patents

Microcomputer controlling circuit

Info

Publication number
JPS5760429A
JPS5760429A JP55137045A JP13704580A JPS5760429A JP S5760429 A JPS5760429 A JP S5760429A JP 55137045 A JP55137045 A JP 55137045A JP 13704580 A JP13704580 A JP 13704580A JP S5760429 A JPS5760429 A JP S5760429A
Authority
JP
Japan
Prior art keywords
power supply
converter
microcomputer
voltage
resistances
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.)
Granted
Application number
JP55137045A
Other languages
Japanese (ja)
Other versions
JPS636883B2 (en
Inventor
Osamu Takahashi
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
Priority to JP55137045A priority Critical patent/JPS5760429A/en
Publication of JPS5760429A publication Critical patent/JPS5760429A/en
Publication of JPS636883B2 publication Critical patent/JPS636883B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters

Abstract

PURPOSE:To suppress an increase in cost, and also to improve the maintenance and service, by constituting so that the value equivalent to temperature change per 1 bit of an A/D converter can be set freely so as not to be influenced by fluctuations of a DC power supply. CONSTITUTION:A series circuit consisting of >=2 resistances 16-18 is connected to a DC power supply 1, voltage of the connecting point of the resistances 16-18 is varied in its impedance by operational amplifiers 19, 20, and reference voltage VREF of a microcomputer 12 incorporating an A/D converter, and a driving electric power supply of an analog entry circuit are supplied. In the event of voltage of an input terminal K of the power supply 1, voltge of the VREF terminal of the microcomputer 12, and voltage of the input terminal K are varied by the same ratio therefore, no operation result of the A/D converter of the microcomputer 12 is affected. According ly, it is possible to optionally set the value equivalent to temperature change per 1 bit of the A/D converter without being affected by fluctuations of a DC power supply.
JP55137045A 1980-09-30 1980-09-30 Microcomputer controlling circuit Granted JPS5760429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55137045A JPS5760429A (en) 1980-09-30 1980-09-30 Microcomputer controlling circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55137045A JPS5760429A (en) 1980-09-30 1980-09-30 Microcomputer controlling circuit

Publications (2)

Publication Number Publication Date
JPS5760429A true JPS5760429A (en) 1982-04-12
JPS636883B2 JPS636883B2 (en) 1988-02-12

Family

ID=15189573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55137045A Granted JPS5760429A (en) 1980-09-30 1980-09-30 Microcomputer controlling circuit

Country Status (1)

Country Link
JP (1) JPS5760429A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0587639U (en) * 1991-07-02 1993-11-26 タイガー魔法瓶株式会社 Microcomputer input data resolution variable device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0587639U (en) * 1991-07-02 1993-11-26 タイガー魔法瓶株式会社 Microcomputer input data resolution variable device

Also Published As

Publication number Publication date
JPS636883B2 (en) 1988-02-12

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