CA1136769A - Memory refresh control system - Google Patents

Memory refresh control system

Info

Publication number
CA1136769A
CA1136769A CA000348477A CA348477A CA1136769A CA 1136769 A CA1136769 A CA 1136769A CA 000348477 A CA000348477 A CA 000348477A CA 348477 A CA348477 A CA 348477A CA 1136769 A CA1136769 A CA 1136769A
Authority
CA
Canada
Prior art keywords
refresh
bits
addresses
memory
clock
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.)
Expired
Application number
CA000348477A
Other languages
English (en)
French (fr)
Inventor
Yoshikazu Tanaka
Hitoshi Shirai
Yoshiharu Kan'o
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of CA1136769A publication Critical patent/CA1136769A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/15—Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/15—Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors
    • H03K5/15013—Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors with more than two outputs

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Dram (AREA)
  • Static Random-Access Memory (AREA)
CA000348477A 1979-04-02 1980-03-26 Memory refresh control system Expired CA1136769A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3955079A JPS55132593A (en) 1979-04-02 1979-04-02 Refresh control method for memory unit
JP39550/1979 1979-04-02

Publications (1)

Publication Number Publication Date
CA1136769A true CA1136769A (en) 1982-11-30

Family

ID=12556158

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000348477A Expired CA1136769A (en) 1979-04-02 1980-03-26 Memory refresh control system

Country Status (5)

Country Link
US (1) US4293931A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0017479B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS55132593A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1136769A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3064733D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691303A (en) * 1985-10-31 1987-09-01 Sperry Corporation Refresh system for multi-bank semiconductor memory
CA2099811A1 (en) * 1992-07-21 1994-01-22 Frederic H. Jung Antibiotic compounds
CN104134215B (zh) * 2014-07-29 2018-10-26 缪荣明 高仟伏dr对接pacs系统的图像减影方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3684897A (en) * 1970-08-19 1972-08-15 Cogar Corp Dynamic mos memory array timing system
US3800295A (en) * 1971-12-30 1974-03-26 Ibm Asynchronously operated memory system
US3790961A (en) * 1972-06-09 1974-02-05 Advanced Memory Syst Inc Random access dynamic semiconductor memory system
JPS5433498B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-09-19 1979-10-20
US3810129A (en) * 1972-10-19 1974-05-07 Ibm Memory system restoration
IT1002272B (it) * 1973-12-27 1976-05-20 Honeywell Inf Systems Sistema di ricarica in memoria a semiconduttori
US3902082A (en) * 1974-02-11 1975-08-26 Mostek Corp Dynamic data input latch and decoder
US4084154A (en) * 1975-05-01 1978-04-11 Burroughs Corporation Charge coupled device memory system with burst mode
IT1041882B (it) * 1975-08-20 1980-01-10 Honeywell Inf Systems Memoria dinamica a semiconduttori e relativo sistema di recarica
US4040122A (en) * 1976-04-07 1977-08-02 Burroughs Corporation Method and apparatus for refreshing a dynamic memory by sequential transparent readings
DE2619238C3 (de) * 1976-04-30 1978-11-02 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren und Anordnung zur zeitlichen Einordnung von unabhängigen Operationen, die in einem elektronischen Schaltungssystem ablaufen
US4172282A (en) * 1976-10-29 1979-10-23 International Business Machines Corporation Processor controlled memory refresh

Also Published As

Publication number Publication date
JPS55132593A (en) 1980-10-15
EP0017479B1 (en) 1983-09-07
US4293931A (en) 1981-10-06
DE3064733D1 (en) 1983-10-13
JPS6313275B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-03-24
EP0017479A1 (en) 1980-10-15

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Legal Events

Date Code Title Description
MKEX Expiry