JPS57182231A - Microcomputer resetting circuit - Google Patents

Microcomputer resetting circuit

Info

Publication number
JPS57182231A
JPS57182231A JP56065268A JP6526881A JPS57182231A JP S57182231 A JPS57182231 A JP S57182231A JP 56065268 A JP56065268 A JP 56065268A JP 6526881 A JP6526881 A JP 6526881A JP S57182231 A JPS57182231 A JP S57182231A
Authority
JP
Japan
Prior art keywords
reset
pulse
circuit
time
cpu11
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
JP56065268A
Other languages
Japanese (ja)
Inventor
Tsutomu Hondo
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.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin 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 Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP56065268A priority Critical patent/JPS57182231A/en
Publication of JPS57182231A publication Critical patent/JPS57182231A/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
    • G06F1/24—Resetting means

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Debugging And Monitoring (AREA)

Abstract

PURPOSE:To easily find a trouble by installing a circuit which generates a reset pulse at the time of power making and another circuit which generates another reset pulse at the time of abnormality, and by monitoring the condition of the reset pulses at the time of abnormality. CONSTITUTION:When a reset signal is outputted from a power source resetting circuit 16, a flip flop (FF) 21 is reset and a processing unit (CPU)11 resets an output circuit 12. The CPU11 generates a pulse RP having a cycle T. However, if an abnormality occurs when the cycle of the pulse RP is less than T, the output of a monostable multivibrator 13 becomes a ''L'' level without being triggered. Therefore, a set pulse is generated against the FF21. While the CPU11 is reset, the condition of the output is not reset. Moreover, if the reset signal is continuously generated at this time, it is judged that the CPU11 goes wrong and an alarm circuit 24 starts working.
JP56065268A 1981-05-01 1981-05-01 Microcomputer resetting circuit Pending JPS57182231A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56065268A JPS57182231A (en) 1981-05-01 1981-05-01 Microcomputer resetting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56065268A JPS57182231A (en) 1981-05-01 1981-05-01 Microcomputer resetting circuit

Publications (1)

Publication Number Publication Date
JPS57182231A true JPS57182231A (en) 1982-11-10

Family

ID=13282000

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56065268A Pending JPS57182231A (en) 1981-05-01 1981-05-01 Microcomputer resetting circuit

Country Status (1)

Country Link
JP (1) JPS57182231A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58169219A (en) * 1982-03-31 1983-10-05 Nec Home Electronics Ltd Memory contents holding system of microcomputer
JPS59211143A (en) * 1983-05-17 1984-11-29 Nissan Motor Co Ltd Car control circuit using microcomputer
JPS603013A (en) * 1983-06-17 1985-01-09 Hitachi Denshi Ltd Restarting circuit
JPS61208550A (en) * 1985-03-13 1986-09-16 Nec Corp Emulator for microcomputer
JPH043282A (en) * 1990-04-20 1992-01-08 Mitsubishi Electric Corp Ic card

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58169219A (en) * 1982-03-31 1983-10-05 Nec Home Electronics Ltd Memory contents holding system of microcomputer
JPS59211143A (en) * 1983-05-17 1984-11-29 Nissan Motor Co Ltd Car control circuit using microcomputer
JPS603013A (en) * 1983-06-17 1985-01-09 Hitachi Denshi Ltd Restarting circuit
JPS61208550A (en) * 1985-03-13 1986-09-16 Nec Corp Emulator for microcomputer
JPH0456342B2 (en) * 1985-03-13 1992-09-08 Nippon Electric Co
JPH043282A (en) * 1990-04-20 1992-01-08 Mitsubishi Electric Corp Ic card

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