DE69025580D1 - Auffrichungspuffer für Speicherkarte - Google Patents
Auffrichungspuffer für SpeicherkarteInfo
- Publication number
- DE69025580D1 DE69025580D1 DE69025580T DE69025580T DE69025580D1 DE 69025580 D1 DE69025580 D1 DE 69025580D1 DE 69025580 T DE69025580 T DE 69025580T DE 69025580 T DE69025580 T DE 69025580T DE 69025580 D1 DE69025580 D1 DE 69025580D1
- Authority
- DE
- Germany
- Prior art keywords
- memory card
- refresh buffer
- refresh
- buffer
- card
- 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
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/450,139 US5193165A (en) | 1989-12-13 | 1989-12-13 | Memory card refresh buffer |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69025580D1 true DE69025580D1 (de) | 1996-04-04 |
DE69025580T2 DE69025580T2 (de) | 1996-09-12 |
Family
ID=23786921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69025580T Expired - Fee Related DE69025580T2 (de) | 1989-12-13 | 1990-10-17 | Auffrichungspuffer für Speicherkarte |
Country Status (4)
Country | Link |
---|---|
US (1) | US5193165A (de) |
EP (1) | EP0437158B1 (de) |
JP (1) | JPH03209691A (de) |
DE (1) | DE69025580T2 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5276844A (en) * | 1991-08-05 | 1994-01-04 | Ascom Autelca Ltd. | Protection system for critical memory information |
US5418920A (en) * | 1992-04-30 | 1995-05-23 | Alcatel Network Systems, Inc. | Refresh control method and system including request and refresh counters and priority arbitration circuitry |
US5638529A (en) * | 1992-08-24 | 1997-06-10 | Intel Corporation | Variable refresh intervals for system devices including setting the refresh interval to zero |
US5577236A (en) * | 1994-12-30 | 1996-11-19 | International Business Machines Corporation | Memory controller for reading data from synchronous RAM |
US5907863A (en) * | 1996-08-16 | 1999-05-25 | Unisys Corporation | Memory control unit using preloaded values to generate optimal timing of memory control sequences between different memory segments |
US5761703A (en) * | 1996-08-16 | 1998-06-02 | Unisys Corporation | Apparatus and method for dynamic memory refresh |
US6356485B1 (en) | 1999-02-13 | 2002-03-12 | Integrated Device Technology, Inc. | Merging write cycles by comparing at least a portion of the respective write cycle addresses |
US6512990B1 (en) * | 2000-01-05 | 2003-01-28 | Agilent Technologies, Inc. | Distributed trigger node |
US6968392B1 (en) * | 2000-06-29 | 2005-11-22 | Cisco Technology, Inc. | Method and apparatus providing improved statistics collection for high bandwidth interfaces supporting multiple connections |
JP2005310245A (ja) * | 2004-04-20 | 2005-11-04 | Seiko Epson Corp | メモリコントローラ、半導体集積回路装置、マイクロコンピュータ及び電子機器 |
US7088632B2 (en) * | 2004-05-26 | 2006-08-08 | Freescale Semiconductor, Inc. | Automatic hidden refresh in a dram and method therefor |
US8472278B2 (en) | 2010-04-09 | 2013-06-25 | Qualcomm Incorporated | Circuits, systems and methods for adjusting clock signals based on measured performance characteristics |
US9293187B2 (en) * | 2011-09-26 | 2016-03-22 | Cisco Technology, Inc. | Methods and apparatus for refreshing digital memory circuits |
US9490002B2 (en) | 2014-07-24 | 2016-11-08 | Rambus Inc. | Reduced refresh power |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3800295A (en) * | 1971-12-30 | 1974-03-26 | Ibm | Asynchronously operated memory system |
IT1041882B (it) * | 1975-08-20 | 1980-01-10 | Honeywell Inf Systems | Memoria dinamica a semiconduttori e relativo sistema di recarica |
US4172282A (en) * | 1976-10-29 | 1979-10-23 | International Business Machines Corporation | Processor controlled memory refresh |
JPS5693179A (en) * | 1979-12-26 | 1981-07-28 | Fujitsu Ltd | Refresh control system |
US4625301A (en) * | 1983-11-30 | 1986-11-25 | Tandy Corporation | Dynamic memory refresh circuit |
US4625296A (en) * | 1984-01-17 | 1986-11-25 | The Perkin-Elmer Corporation | Memory refresh circuit with varying system transparency |
US4747082A (en) * | 1984-11-28 | 1988-05-24 | Hitachi Ltd. | Semiconductor memory with automatic refresh means |
JPS624577A (ja) * | 1985-07-02 | 1987-01-10 | 北川工業株式会社 | 基板引抜具 |
JPS6212994A (ja) * | 1985-07-09 | 1987-01-21 | Fujitsu Ltd | リフレツシユ制御方式 |
JPS63140491A (ja) * | 1986-12-02 | 1988-06-13 | Nec Corp | リフレツシユ制御方式 |
JPS6452293A (en) * | 1987-08-24 | 1989-02-28 | Hitachi Ltd | Memory built-in semiconductor integrated circuit |
JPH01267896A (ja) * | 1988-04-19 | 1989-10-25 | Toshiba Corp | 半導体メモリ |
-
1989
- 1989-12-13 US US07/450,139 patent/US5193165A/en not_active Expired - Fee Related
-
1990
- 1990-10-17 EP EP90480164A patent/EP0437158B1/de not_active Expired - Lifetime
- 1990-10-17 DE DE69025580T patent/DE69025580T2/de not_active Expired - Fee Related
- 1990-11-13 JP JP2306944A patent/JPH03209691A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE69025580T2 (de) | 1996-09-12 |
EP0437158A3 (en) | 1991-12-11 |
EP0437158B1 (de) | 1996-02-28 |
JPH03209691A (ja) | 1991-09-12 |
EP0437158A2 (de) | 1991-07-17 |
US5193165A (en) | 1993-03-09 |
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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 |