JPS5739435A - Reset system of microprocessor - Google Patents

Reset system of microprocessor

Info

Publication number
JPS5739435A
JPS5739435A JP55114550A JP11455080A JPS5739435A JP S5739435 A JPS5739435 A JP S5739435A JP 55114550 A JP55114550 A JP 55114550A JP 11455080 A JP11455080 A JP 11455080A JP S5739435 A JPS5739435 A JP S5739435A
Authority
JP
Japan
Prior art keywords
microprocessor
outgoing
firmware
level
data
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
JP55114550A
Other languages
Japanese (ja)
Inventor
Noboru Kanzaki
Kenji Etsuno
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.)
Tamura Electric Works Ltd
Original Assignee
Tamura Electric Works 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 Tamura Electric Works Ltd filed Critical Tamura Electric Works Ltd
Priority to JP55114550A priority Critical patent/JPS5739435A/en
Publication of JPS5739435A publication Critical patent/JPS5739435A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Debugging And Monitoring (AREA)

Abstract

PURPOSE:To release a microprocessor automatically and also in a short time even in case when runaway of firmware has occured, by forcibly resetting the microprocessor at every constant time. CONSTITUTION:A multivibrator MV executes oscillation by about 50Hz, it is counted by a counter CONT of the next stage, and when about 3 minutes have elapsed, a signal of an H level is provided to a reset terminal RES of a microprocessor MPU, by which firmware is initialized forcibly. At the same time, the whole output port of the microprocessor MPU becomes an L level. On the other hand, in order not to interrupt normal outgoing (data) operation, call outgoing operation and incoming operation, in the outgoing (data) operation and the incoming operation, when each operation is started, its operation is detected and the counter CONT is cleared by utilizing the fact that it does not take 3 minutes until its whole sequence ends.
JP55114550A 1980-08-20 1980-08-20 Reset system of microprocessor Pending JPS5739435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55114550A JPS5739435A (en) 1980-08-20 1980-08-20 Reset system of microprocessor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55114550A JPS5739435A (en) 1980-08-20 1980-08-20 Reset system of microprocessor

Publications (1)

Publication Number Publication Date
JPS5739435A true JPS5739435A (en) 1982-03-04

Family

ID=14640587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55114550A Pending JPS5739435A (en) 1980-08-20 1980-08-20 Reset system of microprocessor

Country Status (1)

Country Link
JP (1) JPS5739435A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS621046U (en) * 1985-06-19 1987-01-07

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS621046U (en) * 1985-06-19 1987-01-07
JPH0315959Y2 (en) * 1985-06-19 1991-04-05

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