JP5171096B2 - 半導体メモリ素子の駆動方法 - Google Patents
半導体メモリ素子の駆動方法 Download PDFInfo
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- JP5171096B2 JP5171096B2 JP2007105354A JP2007105354A JP5171096B2 JP 5171096 B2 JP5171096 B2 JP 5171096B2 JP 2007105354 A JP2007105354 A JP 2007105354A JP 2007105354 A JP2007105354 A JP 2007105354A JP 5171096 B2 JP5171096 B2 JP 5171096B2
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- refresh
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- 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
- G11C11/40615—Internal triggering or timing of refresh, e.g. hidden refresh, self refresh, pseudo-SRAMs
-
- 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
- G11C11/40618—Refresh operations over multiple banks or interleaving
-
- 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
- G11C11/4072—Circuits for initialization, powering up or down, clearing memory or presetting
-
- 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
- G11C11/4063—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
- G11C11/408—Address circuits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/04—Detection or location of defective memory elements, e.g. cell constructio details, timing of test signals
- G11C29/50—Marginal testing, e.g. race, voltage or current testing
- G11C29/50012—Marginal testing, e.g. race, voltage or current testing of timing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/04—Detection or location of defective memory elements, e.g. cell constructio details, timing of test signals
- G11C29/50—Marginal testing, e.g. race, voltage or current testing
- G11C29/50016—Marginal testing, e.g. race, voltage or current testing of retention
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/20—Memory cell initialisation circuits, e.g. when powering up or down, memory clear, latent image memory
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2211/00—Indexing scheme relating to digital stores characterized by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C2211/401—Indexing scheme relating to cells needing refreshing or charge regeneration, i.e. dynamic cells
- G11C2211/406—Refreshing of dynamic cells
- G11C2211/4061—Calibration or ate or cycle tuning
Description
(実施例1)
(実施例2)
(数式1)
セルフリフレッシュマージン=L−K
Claims (5)
- メモリセルアレイをなす各行のリフレッシュタイム特性に対応する第1格納値を初期化する第1ステップと、
セルフリフレッシュモードに入った後、これまでのセルフリフレッシュモードから前記第1格納値が設定された行の次の行(第1行)の各列に対応するデータを第2格納値として格納する第2ステップと、
予定されたリフレッシュサイクルの間に前記第1行に対するリフレッシュ周期の設定のための検出動作を行い、その結果に応じて前記第1行のリフレッシュタイム特性に対応する前記第1格納値を設定する第3ステップと、
前記第1行に対応する前記第2格納値を反転させて前記各列に対応するデータとして再格納する第4ステップと、
前記第2ステップ〜第4ステップを繰り返す第5ステップと、
前記メモリセルアレイに含まれた残りの行に対して前記メモリセルアレイに含まれた全ての行に対する第1格納値の設定が完了するまで、又は、前記セルフリフレッシュモードが終了するまで、前記第2ステップ〜第5ステップを繰り返す第6ステップとを含み、
前記第1行の当該第1格納値が第1値に設定された場合、前記第1行は、リフレッシュサイクルごとにリフレッシュされ、前記第1行の当該第1格納値が第2値に設定された場合、前記第1行は、モードレジスタによって設定された設定リフレッシュ周期ごとにリフレッシュされ、
前記予定されたリフレッシュサイクルの間、第1格納値によって選択されたリフレッシュ周期によって残りの行に対するリフレッシュ動作の実行又は省略の可否を決定することを特徴とする半導体メモリ素子の駆動方法。 - 前記第1ステップが、パワーアップの際に行われることを特徴とする請求項1に記載の半導体メモリ素子の駆動方法。
- 前記第1格納値が、当該行に対してリフレッシュサイクルごとにリフレッシュを行うようにする値に初期化されることを特徴とする請求項2に記載の半導体メモリ素子の駆動方法。
- 前記第3ステップが、
前記第2格納値と前記第1行のデータとを比較するステップと、
前記第2格納値と前記第1行のデータとの比較結果に基づいて前記第1行の当該第1格納値を設定するステップとを含むことを特徴とする請求項1に記載の半導体メモリ素子の駆動方法。 - 前記第1行の当該第1格納値が、前記第2格納値と第1行のデータとが異なる場合、第1値に設定され、前記第2格納値と第1行のデータとが同じ場合、第2値に設定されることを特徴とする請求項4に記載の半導体メモリ素子の駆動方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2006-0034104 | 2006-04-14 | ||
KR1020060034104A KR100810060B1 (ko) | 2006-04-14 | 2006-04-14 | 반도체 메모리 소자 및 그의 구동방법 |
Related Child Applications (1)
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JP2012231683A Division JP2013037762A (ja) | 2006-04-14 | 2012-10-19 | 半導体メモリ素子の駆動方法 |
Publications (2)
Publication Number | Publication Date |
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JP2007287314A JP2007287314A (ja) | 2007-11-01 |
JP5171096B2 true JP5171096B2 (ja) | 2013-03-27 |
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JP2007105354A Expired - Fee Related JP5171096B2 (ja) | 2006-04-14 | 2007-04-12 | 半導体メモリ素子の駆動方法 |
JP2012231683A Withdrawn JP2013037762A (ja) | 2006-04-14 | 2012-10-19 | 半導体メモリ素子の駆動方法 |
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JP2012231683A Withdrawn JP2013037762A (ja) | 2006-04-14 | 2012-10-19 | 半導体メモリ素子の駆動方法 |
Country Status (5)
Country | Link |
---|---|
US (3) | US7710809B2 (ja) |
JP (2) | JP5171096B2 (ja) |
KR (1) | KR100810060B1 (ja) |
CN (1) | CN101055760B (ja) |
TW (1) | TWI333657B (ja) |
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JP4322694B2 (ja) * | 2004-02-04 | 2009-09-02 | エルピーダメモリ株式会社 | 半導体記憶装置および半導体記憶装置のリフレッシュ方法 |
JP2005293785A (ja) * | 2004-04-05 | 2005-10-20 | Elpida Memory Inc | 半導体記憶装置及びそのセルフリフレッシュ制御方法 |
KR20050118526A (ko) * | 2004-06-14 | 2005-12-19 | 삼성전자주식회사 | 짧은 주기의 셀프 리프레시 모드를 가지는 반도체 메모리장치 |
US6965537B1 (en) * | 2004-08-31 | 2005-11-15 | Micron Technology, Inc. | Memory system and method using ECC to achieve low power refresh |
US7082073B2 (en) * | 2004-12-03 | 2006-07-25 | Micron Technology, Inc. | System and method for reducing power consumption during extended refresh periods of dynamic random access memory devices |
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2006
- 2006-04-14 KR KR1020060034104A patent/KR100810060B1/ko active IP Right Grant
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- 2007-04-12 JP JP2007105354A patent/JP5171096B2/ja not_active Expired - Fee Related
- 2007-04-12 US US11/786,594 patent/US7710809B2/en active Active
- 2007-04-13 TW TW096113035A patent/TWI333657B/zh not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
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TW200746142A (en) | 2007-12-16 |
KR100810060B1 (ko) | 2008-03-05 |
US8000163B2 (en) | 2011-08-16 |
CN101055760A (zh) | 2007-10-17 |
US20070242547A1 (en) | 2007-10-18 |
KR20070102235A (ko) | 2007-10-18 |
CN101055760B (zh) | 2010-09-29 |
JP2013037762A (ja) | 2013-02-21 |
US7710809B2 (en) | 2010-05-04 |
TWI333657B (en) | 2010-11-21 |
US20100188914A1 (en) | 2010-07-29 |
JP2007287314A (ja) | 2007-11-01 |
US20100188915A1 (en) | 2010-07-29 |
US8000164B2 (en) | 2011-08-16 |
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