JP4837357B2 - 半導体記憶装置 - Google Patents
半導体記憶装置 Download PDFInfo
- Publication number
- JP4837357B2 JP4837357B2 JP2005303385A JP2005303385A JP4837357B2 JP 4837357 B2 JP4837357 B2 JP 4837357B2 JP 2005303385 A JP2005303385 A JP 2005303385A JP 2005303385 A JP2005303385 A JP 2005303385A JP 4837357 B2 JP4837357 B2 JP 4837357B2
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- JP
- Japan
- Prior art keywords
- circuit
- refresh
- signal
- dll
- control circuit
- 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
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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
- G11C11/4063—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing
- G11C11/407—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing for memory cells of the field-effect type
- G11C11/4076—Timing circuits
-
- 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
- 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
- G11C11/40611—External triggering or timing of internal or partially internal refresh operations, e.g. auto-refresh or CAS-before-RAS triggered refresh
-
- 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
- G11C11/4063—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing
- G11C11/407—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing for memory cells of the field-effect type
- G11C11/409—Read-write [R-W] circuits
- G11C11/4093—Input/output [I/O] data interface arrangements, e.g. data buffers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/10—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
- G11C7/1051—Data output circuits, e.g. read-out amplifiers, data output buffers, data output registers, data output level conversion circuits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/10—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
- G11C7/1051—Data output circuits, e.g. read-out amplifiers, data output buffers, data output registers, data output level conversion circuits
- G11C7/106—Data output latches
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/10—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
- G11C7/1051—Data output circuits, e.g. read-out amplifiers, data output buffers, data output registers, data output level conversion circuits
- G11C7/1066—Output synchronization
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/22—Read-write [R-W] timing or clocking circuits; Read-write [R-W] control signal generators or management
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/22—Read-write [R-W] timing or clocking circuits; Read-write [R-W] control signal generators or management
- G11C7/222—Clock generating, synchronizing or distributing circuits within memory device
Description
12 モードレジスタ
13 制御回路
14 ロウアドレスバッファ&リフレッシュ制御回路
15 ロウデコーダ
16 メモリセルアレイ
17 センスアンプ
18 コラムデコーダ
19 コラムアドレスバッファ
20 ラッチ&バッファ
21 CK入力回路
22、22a、22b DLL制御回路
23 DLL回路
31 REF発生回路
32 RAS発生回路
AND1、AND2、AND3、AND4 論理積回路
CNT カウンタ回路
DFF1、DFF2、DFF3、DFF4 Dフリップフロップ回路
INV1、INV2、INV3 インバータ回路
NAND1、NAND2、NAND3、NAND4 否定論理積回路
NOR1、NOR2、NOR3、NOR4 否定論理和回路
OR1 論理和回路
Claims (3)
- リフレッシュコマンドを受ける度に複数回のリフレッシュ動作がメモリセルに対して実行される半導体記憶装置であって、
外部から供給される外部クロック信号に対して内部クロック信号の位相を合わせるDLL回路と、
前記リフレッシュコマンド受ける度に実行される前記複数回のリフレッシュ動作の中の少なくとも1回のリフレッシュ動作のときは前記DLL回路を動作させ、残りのリフレッシュ動作のときは前記DLL回路の動作を停止させるDLL制御回路と、
を含むことを特徴とする半導体記憶装置。 - 前記複数回のリフレッシュ動作は、リフレッシュを時間的に分割して行うためのアドレス信号が一つのリフレッシュ期間に複数回アクティブになることによってなされ、
前記DLL制御回路は、前記アドレス信号をカウントするカウンタ回路と、該カウンタ回路のカウント値をデコードするデコーダ回路とを備え、
前記デコーダ回路が所定のカウント範囲をデコードしている間、前記DLL回路は、動作を停止することを特徴とする請求項1記載の半導体記憶装置。 - 前記カウンタ回路は、前記リフレッシュ期間でアクティブとされ、前記リフレッシュ期間外ではリセットされるように構成されることを特徴とする請求項2記載の半導体記憶装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005303385A JP4837357B2 (ja) | 2005-10-18 | 2005-10-18 | 半導体記憶装置 |
US11/580,895 US7545697B2 (en) | 2005-10-18 | 2006-10-16 | Semiconductor device in which a memory array is refreshed based on an address signal |
US12/427,237 US8036060B2 (en) | 2005-10-18 | 2009-04-21 | Semiconductor device in which a memory array is refreshed based on an address signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005303385A JP4837357B2 (ja) | 2005-10-18 | 2005-10-18 | 半導体記憶装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007115307A JP2007115307A (ja) | 2007-05-10 |
JP4837357B2 true JP4837357B2 (ja) | 2011-12-14 |
Family
ID=37985221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005303385A Expired - Fee Related JP4837357B2 (ja) | 2005-10-18 | 2005-10-18 | 半導体記憶装置 |
Country Status (2)
Country | Link |
---|---|
US (2) | US7545697B2 (ja) |
JP (1) | JP4837357B2 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2006320162B2 (en) * | 2005-12-02 | 2013-07-25 | The Johns Hopkins University | Use of high-dose oxazaphosphorine drugs for treating immune disorders |
KR100902058B1 (ko) * | 2008-01-07 | 2009-06-09 | 주식회사 하이닉스반도체 | 반도체 집적 회로 및 그의 제어 방법 |
JP2010056888A (ja) * | 2008-08-28 | 2010-03-11 | Elpida Memory Inc | 同期化制御回路、半導体装置及び制御方法 |
KR101607489B1 (ko) * | 2009-01-19 | 2016-03-30 | 삼성전자주식회사 | 리프레쉬 제어회로, 이를 포함하는 반도체 메모리 장치 및 메모리 시스템 |
JP5528724B2 (ja) * | 2009-05-29 | 2014-06-25 | ピーエスフォー ルクスコ エスエイアールエル | 半導体記憶装置及びこれを制御するメモリコントローラ、並びに、情報処理システム |
JP2011061457A (ja) | 2009-09-09 | 2011-03-24 | Elpida Memory Inc | クロック生成回路及びこれを備える半導体装置並びにデータ処理システム |
US8522087B2 (en) * | 2011-02-02 | 2013-08-27 | Micron Technology, Inc. | Advanced converters for memory cell sensing and methods |
KR101932663B1 (ko) * | 2012-07-12 | 2018-12-26 | 삼성전자 주식회사 | 리프레쉬 주기 정보를 저장하는 반도체 메모리 장치 및 그 동작방법 |
CN105425900B (zh) * | 2016-01-15 | 2018-05-08 | 湖南中车时代通信信号有限公司 | 平台中访问实时时钟的方法和装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08138374A (ja) * | 1994-11-10 | 1996-05-31 | Nec Corp | 半導体メモリ装置およびそのリフレッシュ方法 |
JP3592386B2 (ja) * | 1994-11-22 | 2004-11-24 | 株式会社ルネサステクノロジ | 同期型半導体記憶装置 |
JP2002093167A (ja) * | 2000-09-08 | 2002-03-29 | Mitsubishi Electric Corp | 半導体記憶装置 |
US6480439B2 (en) * | 2000-10-03 | 2002-11-12 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor device |
US6988218B2 (en) * | 2002-02-11 | 2006-01-17 | Micron Technology, Inc. | System and method for power saving delay locked loop control by selectively locking delay interval |
US6809990B2 (en) * | 2002-06-21 | 2004-10-26 | Micron Technology, Inc. | Delay locked loop control circuit |
KR100493054B1 (ko) * | 2003-03-04 | 2005-06-02 | 삼성전자주식회사 | 지연동기 루프를 구비하는 반도체 장치 및 지연동기 루프제어방법 |
US6975556B2 (en) * | 2003-10-09 | 2005-12-13 | Micron Technology, Inc. | Circuit and method for controlling a clock synchronizing circuit for low power refresh operation |
JP4191018B2 (ja) * | 2003-11-26 | 2008-12-03 | エルピーダメモリ株式会社 | 半導体記憶装置のリフレッシュ制御方式 |
US7433996B2 (en) * | 2004-07-01 | 2008-10-07 | Memocom Corp. | System and method for refreshing random access memory cells |
-
2005
- 2005-10-18 JP JP2005303385A patent/JP4837357B2/ja not_active Expired - Fee Related
-
2006
- 2006-10-16 US US11/580,895 patent/US7545697B2/en active Active
-
2009
- 2009-04-21 US US12/427,237 patent/US8036060B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20070091705A1 (en) | 2007-04-26 |
JP2007115307A (ja) | 2007-05-10 |
US20090201751A1 (en) | 2009-08-13 |
US8036060B2 (en) | 2011-10-11 |
US7545697B2 (en) | 2009-06-09 |
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