JPS57176589A - Magnetic bubble memory device - Google Patents

Magnetic bubble memory device

Info

Publication number
JPS57176589A
JPS57176589A JP6116381A JP6116381A JPS57176589A JP S57176589 A JPS57176589 A JP S57176589A JP 6116381 A JP6116381 A JP 6116381A JP 6116381 A JP6116381 A JP 6116381A JP S57176589 A JPS57176589 A JP S57176589A
Authority
JP
Japan
Prior art keywords
signal
power supply
output
goes
circuit
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
JP6116381A
Other languages
Japanese (ja)
Other versions
JPS6117070B2 (en
Inventor
Kazuhiro Ishida
Ryuji Yano
Tadaaki Eto
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6116381A priority Critical patent/JPS57176589A/en
Publication of JPS57176589A publication Critical patent/JPS57176589A/en
Publication of JPS6117070B2 publication Critical patent/JPS6117070B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C5/00—Details of stores covered by group G11C11/00
    • G11C5/14—Power supply arrangements, e.g. power down, chip selection or deselection, layout of wirings or power grids, or multiple supply levels
    • G11C5/143—Detection of memory cassette insertion or removal; Continuity checks of supply or ground lines; Detection of supply variations, interruptions or levels ; Switching between alternative supplies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)

Abstract

PURPOSE:To prevent flow-in of a failure current to a magnetic bubble memory element, by constituting a power supply monitor circuit so as to output a control effective signal for the power supply when an oscillator output is normal. CONSTITUTION:When a power supply is applied, an output Q of a D-FF circuit 1 is at L with a reset signal S3, a power supply control effective signal S4 goes to L level, and a power supply monitor circuit is made ineffective. Next, when a power supply voltage is normal and a power supply detecting signal S1 goes to H, since an output Q of the circuit 1 is unchanged until an oscillator output signal S2 is outputted, the signal S4 remains L level. When the signal S2 is generated, since the output Q of the circuit 1 goes to H through the detection of the signal S1, the signal S4 goes to H. Further, on power supply failure, the signal S1 goes to L and also the signal S4 goes to L, allowing to avoid the time delay of the output Q of the circuit 1 from being outputted to the signal S4.
JP6116381A 1981-04-24 1981-04-24 Magnetic bubble memory device Granted JPS57176589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6116381A JPS57176589A (en) 1981-04-24 1981-04-24 Magnetic bubble memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6116381A JPS57176589A (en) 1981-04-24 1981-04-24 Magnetic bubble memory device

Publications (2)

Publication Number Publication Date
JPS57176589A true JPS57176589A (en) 1982-10-29
JPS6117070B2 JPS6117070B2 (en) 1986-05-06

Family

ID=13163193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6116381A Granted JPS57176589A (en) 1981-04-24 1981-04-24 Magnetic bubble memory device

Country Status (1)

Country Link
JP (1) JPS57176589A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58153292A (en) * 1982-03-08 1983-09-12 Fujitsu Ltd System for controlling magnetic bubble memory

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58153292A (en) * 1982-03-08 1983-09-12 Fujitsu Ltd System for controlling magnetic bubble memory
JPS6216469B2 (en) * 1982-03-08 1987-04-13 Fujitsu Ltd

Also Published As

Publication number Publication date
JPS6117070B2 (en) 1986-05-06

Similar Documents

Publication Publication Date Title
DE3361512D1 (en) Electronic circuit arrangement comprising a switching device and fault indicator
JPS57124946A (en) Pulse detection circuit
DE68923369T2 (en) VOLTAGE CONTROL AND DISPLAY ARRANGEMENT.
JPS57212825A (en) Protective device
JPS57176589A (en) Magnetic bubble memory device
EP0181829A3 (en) Power supply for electrical detectors particularly for gamma radiation monitors
EP0467719A3 (en) Integrated low voltage detect and watchdog circuit
US3778800A (en) Self-monitoring battery operated circuit
KR850000867A (en) Color tv receiver
JPS5750021A (en) Periodic signal detector
JPS52100997A (en) Display control system
JPS5657951A (en) Ionization smoke detector
JPS5580134A (en) Integrated circuit
JPS57117194A (en) Protection method for data destruction of backup ram at power supply interruption of microcomputer system
JPS5773678A (en) Detector for momentary power failure
JPS5347949A (en) Arc extinguishing detection circuit
JPS5284423A (en) Invertor protection device
JPS57165780A (en) Timepiece with alarm
JPS556120A (en) Ignition device
JPS5484223A (en) Switching power source circuit
JPS57176401A (en) Malfunction preventing system for alarm circuit at input power supply application
JPS5618375A (en) Battery liquid level alarm
JPS56111482A (en) Detector for granulated substance or pulverulent body
JPS55152625A (en) Detecting device for doze driving
JPS5685886A (en) Atomic oscillator