JPS5734225A - Restarting apparatus for central processing unit - Google Patents

Restarting apparatus for central processing unit

Info

Publication number
JPS5734225A
JPS5734225A JP10900680A JP10900680A JPS5734225A JP S5734225 A JPS5734225 A JP S5734225A JP 10900680 A JP10900680 A JP 10900680A JP 10900680 A JP10900680 A JP 10900680A JP S5734225 A JPS5734225 A JP S5734225A
Authority
JP
Japan
Prior art keywords
timer
circuit
signal
output
processing unit
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
JP10900680A
Other languages
Japanese (ja)
Other versions
JPS5924460B2 (en
Inventor
Makoto Minagawa
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.)
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Electric Manufacturing 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 Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Electric Manufacturing Co Ltd
Priority to JP55109006A priority Critical patent/JPS5924460B2/en
Publication of JPS5734225A publication Critical patent/JPS5734225A/en
Publication of JPS5924460B2 publication Critical patent/JPS5924460B2/en
Expired 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 prevent system down due to external noise and stabilize the system using a watchdog timer by installing a restarting circuit. CONSTITUTION:A restart processing circuit 3 is installed in the output side of a watchdog timer WDT2 to introduce an abnormal signal of WDT2 into an AND circuit AND through the 1st timer part 31 and output the output signal found from ''and'' between the 1st timer part 31 and the 2nd timer part set up to longer time than the 1st timer to a restart output part. Although the timer part 31 outputs an ON signal to the AND circuit AND when CPU1 is abnormal, the timer of the timer part does not operate at the time and an OFF signal is outputted to the AND circuit AND, so that CPU1 is not restarted. Thus, the failure due to external noise can be discriminated from that of CPU itself.
JP55109006A 1980-08-08 1980-08-08 Central processing unit restart device Expired JPS5924460B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55109006A JPS5924460B2 (en) 1980-08-08 1980-08-08 Central processing unit restart device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55109006A JPS5924460B2 (en) 1980-08-08 1980-08-08 Central processing unit restart device

Publications (2)

Publication Number Publication Date
JPS5734225A true JPS5734225A (en) 1982-02-24
JPS5924460B2 JPS5924460B2 (en) 1984-06-09

Family

ID=14499172

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55109006A Expired JPS5924460B2 (en) 1980-08-08 1980-08-08 Central processing unit restart device

Country Status (1)

Country Link
JP (1) JPS5924460B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0371240A (en) * 1989-08-11 1991-03-27 Nec Corp Watch-dog timer circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2020010022A (en) 2018-03-29 2020-12-07 Mt Tec Llc Automobile component.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0371240A (en) * 1989-08-11 1991-03-27 Nec Corp Watch-dog timer circuit

Also Published As

Publication number Publication date
JPS5924460B2 (en) 1984-06-09

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