JPS5316536A - Volatile memory back-up unit - Google Patents

Volatile memory back-up unit

Info

Publication number
JPS5316536A
JPS5316536A JP9028776A JP9028776A JPS5316536A JP S5316536 A JPS5316536 A JP S5316536A JP 9028776 A JP9028776 A JP 9028776A JP 9028776 A JP9028776 A JP 9028776A JP S5316536 A JPS5316536 A JP S5316536A
Authority
JP
Japan
Prior art keywords
volatile memory
memory
unit
memory back
volatile
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
JP9028776A
Other languages
Japanese (ja)
Inventor
Yasushi Fukunaga
Hideo Maejima
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 JP9028776A priority Critical patent/JPS5316536A/en
Publication of JPS5316536A publication Critical patent/JPS5316536A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C14/00—Digital stores characterised by arrangements of cells having volatile and non-volatile storage properties for back-up when the power is down
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
    • G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
    • G11C11/401—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming cells needing refreshing or charge regeneration, i.e. dynamic cells
    • G11C11/406—Management or control of the refreshing or charge-regeneration cycles

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Power Sources (AREA)

Abstract

PURPOSE:To vary the address of the back-up memory for the volatile memory composing a main memory, and thus to give a dynamic change to the memory space in order to back up the volatile memory by means of a small-capacity memory.
JP9028776A 1976-07-30 1976-07-30 Volatile memory back-up unit Pending JPS5316536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9028776A JPS5316536A (en) 1976-07-30 1976-07-30 Volatile memory back-up unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9028776A JPS5316536A (en) 1976-07-30 1976-07-30 Volatile memory back-up unit

Publications (1)

Publication Number Publication Date
JPS5316536A true JPS5316536A (en) 1978-02-15

Family

ID=13994300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9028776A Pending JPS5316536A (en) 1976-07-30 1976-07-30 Volatile memory back-up unit

Country Status (1)

Country Link
JP (1) JPS5316536A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5731768A (en) * 1980-07-17 1982-02-20 Dunham Bush Inc Heat pump system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5731768A (en) * 1980-07-17 1982-02-20 Dunham Bush Inc Heat pump system

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