JPS56163581A - Memory refreshing system - Google Patents

Memory refreshing system

Info

Publication number
JPS56163581A
JPS56163581A JP6537180A JP6537180A JPS56163581A JP S56163581 A JPS56163581 A JP S56163581A JP 6537180 A JP6537180 A JP 6537180A JP 6537180 A JP6537180 A JP 6537180A JP S56163581 A JPS56163581 A JP S56163581A
Authority
JP
Japan
Prior art keywords
bank
refreshing
cpu
signal
gate
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
JP6537180A
Other languages
Japanese (ja)
Inventor
Hirokimi Shimizu
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP6537180A priority Critical patent/JPS56163581A/en
Publication of JPS56163581A publication Critical patent/JPS56163581A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)

Abstract

PURPOSE:To increase the using efficiency of the CPU, by dividing a main storage device into plural banks with a refreshing circuit provided to each bank and sending a stop request signal to the CPU only when the own bank receives an access during a refreshing. CONSTITUTION:It is supposed that the refresh signal R1 is ''1'' and a refreshing circuit 2a is refreshing a bank 7a. A CPU1 is going to give an access to the bank 7a, and the address signal within the bank 7a emerges at an address bus 5, then the coincident output C, of a comparator 8a comes to ''1''. Thus the output of an AND gate 9a has ''1'', and the RAM input of the CPU1 becomes ''0'' by an OR gate 10 and an inverter 7. Then the execution of the CPU is discontinued temporarily. When the refreshing of the bank 7a is over with the signal R1 turned to ''0'' during the refreshing, the RAM input of the CPU turned to ''1'' to restart the operation of the CPU.
JP6537180A 1980-05-19 1980-05-19 Memory refreshing system Pending JPS56163581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6537180A JPS56163581A (en) 1980-05-19 1980-05-19 Memory refreshing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6537180A JPS56163581A (en) 1980-05-19 1980-05-19 Memory refreshing system

Publications (1)

Publication Number Publication Date
JPS56163581A true JPS56163581A (en) 1981-12-16

Family

ID=13285034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6537180A Pending JPS56163581A (en) 1980-05-19 1980-05-19 Memory refreshing system

Country Status (1)

Country Link
JP (1) JPS56163581A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986005917A2 (en) * 1985-04-01 1986-10-09 Ncr Co Memory system having refresh control means
JPH078688A (en) * 1993-06-24 1995-01-13 Nippon Sogo Jiyuuseikatsu Kk Hot air device for bathroom

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986005917A2 (en) * 1985-04-01 1986-10-09 Ncr Co Memory system having refresh control means
JPH0743931B2 (en) * 1985-04-01 1995-05-15 エイ・ティ・アンド・ティ グローバル インフォメーション ソルーションズ インターナショナル インコーポレイテッド Memory system with refresh control means
JPH078688A (en) * 1993-06-24 1995-01-13 Nippon Sogo Jiyuuseikatsu Kk Hot air device for bathroom

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