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JPS5790729A - Power supply circuit for microprocessor - Google Patents

Power supply circuit for microprocessor

Info

Publication number
JPS5790729A
JPS5790729A JP55167067A JP16706780A JPS5790729A JP S5790729 A JPS5790729 A JP S5790729A JP 55167067 A JP55167067 A JP 55167067A JP 16706780 A JP16706780 A JP 16706780A JP S5790729 A JPS5790729 A JP S5790729A
Authority
JP
Japan
Prior art keywords
power supply
voltage
circuit
microprocessor
improper
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
JP55167067A
Other languages
Japanese (ja)
Inventor
Tadakazu Shiraishi
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.)
Pioneer Corp
Original Assignee
Pioneer Corp
Pioneer Electronic 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 Pioneer Corp, Pioneer Electronic Corp filed Critical Pioneer Corp
Priority to JP55167067A priority Critical patent/JPS5790729A/en
Publication of JPS5790729A publication Critical patent/JPS5790729A/en
Pending 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
    • G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Sources (AREA)
  • Calculators And Similar Devices (AREA)

Abstract

PURPOSE:To effectively prevent the malfunction of a microprocessor which is caused by reduction of the voltage supplied from a DC power supply, by stopping the operation of a constant voltage circuit in case the output voltage of the DC power supply becomes improper. CONSTITUTION:A constant voltage circuit 15 compensates the voltage fluctuation of a DC power supply 11 and supplies the constant voltage to a microprocessor 14; and a monitor circuit 16 detects whether the output voltage of the power supply 11 is higher than the reference level and proper or lower than the reference level and improper. In addition, a control circuit 17 gives the control so that the output of the circuit 15 is set under the inactive voltage of the processor 14 in case the output voltage of the power supply 11 which is detected by the circuit 16 is improper. As a result, the malfunction of the processor 14 that is caused by a reduction of the voltage supplied from a DC power supply can be completely prevented.
JP55167067A 1980-11-26 1980-11-26 Power supply circuit for microprocessor Pending JPS5790729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55167067A JPS5790729A (en) 1980-11-26 1980-11-26 Power supply circuit for microprocessor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55167067A JPS5790729A (en) 1980-11-26 1980-11-26 Power supply circuit for microprocessor

Publications (1)

Publication Number Publication Date
JPS5790729A true JPS5790729A (en) 1982-06-05

Family

ID=15842784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55167067A Pending JPS5790729A (en) 1980-11-26 1980-11-26 Power supply circuit for microprocessor

Country Status (1)

Country Link
JP (1) JPS5790729A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59122624U (en) * 1983-02-03 1984-08-18 三洋電機株式会社 Electronics
US4553196A (en) * 1981-06-12 1985-11-12 Hitachi, Ltd. Power source system for vehicular electronic device
JPS6112125U (en) * 1984-06-27 1986-01-24 三洋電機株式会社 Electronics

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553196A (en) * 1981-06-12 1985-11-12 Hitachi, Ltd. Power source system for vehicular electronic device
JPS59122624U (en) * 1983-02-03 1984-08-18 三洋電機株式会社 Electronics
JPS6112125U (en) * 1984-06-27 1986-01-24 三洋電機株式会社 Electronics
JPH044276Y2 (en) * 1984-06-27 1992-02-07

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