DE69129829D1 - Mikrocomputer mit Zugriff zu einem externen Speicher mit geringster Wartezeit - Google Patents

Mikrocomputer mit Zugriff zu einem externen Speicher mit geringster Wartezeit

Info

Publication number
DE69129829D1
DE69129829D1 DE69129829T DE69129829T DE69129829D1 DE 69129829 D1 DE69129829 D1 DE 69129829D1 DE 69129829 T DE69129829 T DE 69129829T DE 69129829 T DE69129829 T DE 69129829T DE 69129829 D1 DE69129829 D1 DE 69129829D1
Authority
DE
Germany
Prior art keywords
microcomputer
access
waiting time
external memory
minimal waiting
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 - Fee Related
Application number
DE69129829T
Other languages
English (en)
Other versions
DE69129829T2 (de
Inventor
Tomoko Tsuha
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Publication of DE69129829D1 publication Critical patent/DE69129829D1/de
Application granted granted Critical
Publication of DE69129829T2 publication Critical patent/DE69129829T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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)
  • Dram (AREA)
  • Microcomputers (AREA)
  • Memory System (AREA)
DE69129829T 1990-10-01 1991-10-01 Mikrocomputer mit Zugriff zu einem externen Speicher mit geringster Wartezeit Expired - Fee Related DE69129829T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2264351A JPH04141886A (ja) 1990-10-01 1990-10-01 マイクロコンピュータ

Publications (2)

Publication Number Publication Date
DE69129829D1 true DE69129829D1 (de) 1998-08-27
DE69129829T2 DE69129829T2 (de) 1999-04-22

Family

ID=17401951

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69129829T Expired - Fee Related DE69129829T2 (de) 1990-10-01 1991-10-01 Mikrocomputer mit Zugriff zu einem externen Speicher mit geringster Wartezeit

Country Status (4)

Country Link
US (1) US5511176A (de)
EP (1) EP0479247B1 (de)
JP (1) JPH04141886A (de)
DE (1) DE69129829T2 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5638529A (en) * 1992-08-24 1997-06-10 Intel Corporation Variable refresh intervals for system devices including setting the refresh interval to zero
JP2817107B2 (ja) * 1992-12-28 1998-10-27 キヤノン株式会社 画像入力装置
KR0172001B1 (ko) * 1995-12-05 1999-03-30 윤종용 바이오스 메모리의 재프로그램 장치 및 그 방법
US6385645B1 (en) * 1995-08-04 2002-05-07 Belle Gate Investments B.V. Data exchange system comprising portable data processing units
US5619468A (en) * 1995-12-07 1997-04-08 Advanced Micro Devices, Inc. Two-stage memory refresh circuit
US5748547A (en) * 1996-05-24 1998-05-05 Shau; Jeng-Jye High performance semiconductor memory devices having multiple dimension bit lines
JPH1049511A (ja) * 1996-08-02 1998-02-20 Oki Electric Ind Co Ltd １チップマイクロコンピュータ
US5890198A (en) * 1996-10-22 1999-03-30 Micron Technology, Inc. Intelligent refresh controller for dynamic memory devices
US6226709B1 (en) * 1997-10-24 2001-05-01 Compaq Computer Corporation Memory refresh control system
EP1118203A1 (de) * 1998-09-29 2001-07-25 Sun Microsystems, Inc. Überlagerung von daten über sprache
DE69942620D1 (de) 1999-06-10 2010-09-02 Belle Gate Invest B V Vorrichtung zum speichern unterschiedlicher versionen von datensätzen in getrennten datenbereichen uin einem speicher
WO2001040910A1 (en) * 1999-12-06 2001-06-07 De Jong, Eduard, Karel Computer arrangement using non-refreshed dram
JP4824240B2 (ja) * 1999-12-07 2011-11-30 オラクル・アメリカ・インコーポレイテッド 安全な写真担持用識別装置及びこのような識別装置を認証する手段及び方法
BR9917574A (pt) 1999-12-07 2002-08-06 Sun Microsystems Inc Meio legìvel por computador com microprocessador para controlar a leitura e computador disposto para se comunicar com tal meio
TW522399B (en) * 1999-12-08 2003-03-01 Hitachi Ltd Semiconductor device
CA2416844A1 (en) 2000-07-20 2002-01-31 Belle Gate Investment B.V. Method and system of communicating devices, and devices therefor, with protected data transfer
JP4416372B2 (ja) * 2002-02-25 2010-02-17 富士通マイクロエレクトロニクス株式会社 半導体記憶装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6022438B2 (ja) * 1980-05-06 1985-06-01 松下電器産業株式会社 不揮発性メモリのリフレッシュ方式
US4631701A (en) * 1983-10-31 1986-12-23 Ncr Corporation Dynamic random access memory refresh control system
JPS6199199A (ja) * 1984-09-28 1986-05-17 株式会社東芝 音声分析合成装置
US4701843A (en) * 1985-04-01 1987-10-20 Ncr Corporation Refresh system for a page addressable memory
US4754425A (en) * 1985-10-18 1988-06-28 Gte Communication Systems Corporation Dynamic random access memory refresh circuit selectively adapted to different clock frequencies
DD242698A1 (de) * 1985-11-14 1987-02-04 Erfurt Mikroelektronik Schaltungsanordnung zur refreshtaktsteuerung
JPH01267896A (ja) * 1988-04-19 1989-10-25 Toshiba Corp 半導体メモリ
JPH01307997A (ja) * 1988-06-06 1989-12-12 Toshiba Corp メモリ装置
EP0424301A3 (en) * 1989-10-18 1992-09-16 International Business Machines Corporation Overlapped data scrubbing with data refreshing

Also Published As

Publication number Publication date
JPH04141886A (ja) 1992-05-15
EP0479247B1 (de) 1998-07-22
US5511176A (en) 1996-04-23
EP0479247A1 (de) 1992-04-08
DE69129829T2 (de) 1999-04-22

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee