JPS573121A - Detection system for voltage lowering of memory protecting battery - Google Patents

Detection system for voltage lowering of memory protecting battery

Info

Publication number
JPS573121A
JPS573121A JP7688780A JP7688780A JPS573121A JP S573121 A JPS573121 A JP S573121A JP 7688780 A JP7688780 A JP 7688780A JP 7688780 A JP7688780 A JP 7688780A JP S573121 A JPS573121 A JP S573121A
Authority
JP
Japan
Prior art keywords
voltage
battery
ram5
area
lowering
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
JP7688780A
Other languages
Japanese (ja)
Inventor
Satoru Saito
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP7688780A priority Critical patent/JPS573121A/en
Publication of JPS573121A publication Critical patent/JPS573121A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0763—Error or fault detection not based on redundancy by bit configuration check, e.g. of formats or tags

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Sources (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

PURPOSE:To detect voltage lowering by the processing of a program without detecting directly the voltage of a battery protecting a volatile memory in case that the voltage of this battery is lowered to a prescribed or less voltage. CONSTITUTION:If the power source voltage of a power supply circuit 9 is cut off during execution of a main program by some fault, a CPU1 shunts states of input/ output circuits 7 and 8 into a prescribed area of a RAM5. The RAM5 continues to hold data by a battery 11. When the power source voltage of the power supply circuit 9 is restored, the CPU1 reads out testing patterns from an area 41 of a ROM4 and an area 51 of the RAM5 respectively after discriminating that a switch 6 is not turned on. It is dirciminated whether respective testing patterns coincide with each other or not; and if they do not coincide with each other, abnormal lowering of the voltage of the battery 11 is discriminated.
JP7688780A 1980-06-07 1980-06-07 Detection system for voltage lowering of memory protecting battery Pending JPS573121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7688780A JPS573121A (en) 1980-06-07 1980-06-07 Detection system for voltage lowering of memory protecting battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7688780A JPS573121A (en) 1980-06-07 1980-06-07 Detection system for voltage lowering of memory protecting battery

Publications (1)

Publication Number Publication Date
JPS573121A true JPS573121A (en) 1982-01-08

Family

ID=13618140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7688780A Pending JPS573121A (en) 1980-06-07 1980-06-07 Detection system for voltage lowering of memory protecting battery

Country Status (1)

Country Link
JP (1) JPS573121A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835799A (en) * 1981-08-21 1983-03-02 Matsushita Electric Ind Co Ltd Detecting system for ram backup error
JPS58152293A (en) * 1982-03-06 1983-09-09 株式会社河合楽器製作所 Memory contents inspecting system for electronic musical instrument
JPS58153299A (en) * 1982-03-08 1983-09-12 Fuji Xerox Co Ltd Method for detecting trouble
JPS5979498A (en) * 1982-10-28 1984-05-08 Toyosetsuto Kk Checking system using program judging storage data of ram
JPS6040381A (en) * 1983-08-12 1985-03-02 三菱電機株式会社 Protective device of controller for elevator
JPS6326748A (en) * 1986-07-21 1988-02-04 Toyo Electric Mfg Co Ltd Method for deciding abnormality of memory
EP0645703A2 (en) * 1993-09-29 1995-03-29 Siemens Aktiengesellschaft Method for checking the proper coupling of integrated circuit modules
JP2011100511A (en) * 2009-11-06 2011-05-19 Fujitsu Ten Ltd Data writing device and data writing method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5562600A (en) * 1978-11-02 1980-05-12 Mitsubishi Electric Corp Availability decision method of power failure security in volatile semiconductor memory

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5562600A (en) * 1978-11-02 1980-05-12 Mitsubishi Electric Corp Availability decision method of power failure security in volatile semiconductor memory

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835799A (en) * 1981-08-21 1983-03-02 Matsushita Electric Ind Co Ltd Detecting system for ram backup error
JPS58152293A (en) * 1982-03-06 1983-09-09 株式会社河合楽器製作所 Memory contents inspecting system for electronic musical instrument
JPS58153299A (en) * 1982-03-08 1983-09-12 Fuji Xerox Co Ltd Method for detecting trouble
JPS5979498A (en) * 1982-10-28 1984-05-08 Toyosetsuto Kk Checking system using program judging storage data of ram
JPS6040381A (en) * 1983-08-12 1985-03-02 三菱電機株式会社 Protective device of controller for elevator
JPS6326748A (en) * 1986-07-21 1988-02-04 Toyo Electric Mfg Co Ltd Method for deciding abnormality of memory
EP0645703A2 (en) * 1993-09-29 1995-03-29 Siemens Aktiengesellschaft Method for checking the proper coupling of integrated circuit modules
EP0645703A3 (en) * 1993-09-29 1997-09-17 Siemens Ag Method for checking the proper coupling of integrated circuit modules.
JP2011100511A (en) * 2009-11-06 2011-05-19 Fujitsu Ten Ltd Data writing device and data writing method

Similar Documents

Publication Publication Date Title
CA2079468A1 (en) Arcing fault detector
JPS55131852A (en) Fail-safe unit of control computer
JPS573121A (en) Detection system for voltage lowering of memory protecting battery
JPS5788598A (en) Fault detecting method of storage device
JPS576944A (en) Fault detecting device
JPS56143599A (en) Check system for fault of p-rom
JPS54111645A (en) Surge absorption indicating circuit
JPS577690A (en) Initial program loading system
GB961145A (en) Fire detection systems
JPS57105049A (en) Fault processing method of data processing device
JPS6450148A (en) Memory resetting circuit
JPS578555A (en) System for detecting and processing abnormal state of copying machine
JPS57147198A (en) Battery backup result judging system for volatile memory
JPS54103976A (en) Logical circuit diagnoser
JPS5523708A (en) Vehicle pattern automatic traffic control (atc) system
JPS57158539A (en) Abnormal tool monitoring system
JPS5668030A (en) Logic circuit
JPS57195395A (en) Memory backup method for power failure
JPS5463343A (en) Automatic bus switching device
JPS5786958A (en) Control storage history system
JPS5729167A (en) Multicomputer system
JPS6138363Y2 (en)
JPS57211626A (en) Computer system
JPS5690740A (en) Collective alarm signal device
JPS5727490A (en) Evaluation device for semiconductor memory device