JP2012174297A - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP2012174297A JP2012174297A JP2011032839A JP2011032839A JP2012174297A JP 2012174297 A JP2012174297 A JP 2012174297A JP 2011032839 A JP2011032839 A JP 2011032839A JP 2011032839 A JP2011032839 A JP 2011032839A JP 2012174297 A JP2012174297 A JP 2012174297A
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- Prior art keywords
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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
- G11C29/70—Masking faults in memories by using spares or by reconfiguring
- G11C29/78—Masking faults in memories by using spares or by reconfiguring using programmable devices
- G11C29/785—Masking faults in memories by using spares or by reconfiguring using programmable devices with redundancy programming schemes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/70—Masking faults in memories by using spares or by reconfiguring
- G11C29/78—Masking faults in memories by using spares or by reconfiguring using programmable devices
- G11C29/80—Masking faults in memories by using spares or by reconfiguring using programmable devices with improved layout
- G11C29/808—Masking faults in memories by using spares or by reconfiguring using programmable devices with improved layout using a flexible replacement scheme
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/70—Masking faults in memories by using spares or by reconfiguring
- G11C29/78—Masking faults in memories by using spares or by reconfiguring using programmable devices
- G11C29/83—Masking faults in memories by using spares or by reconfiguring using programmable devices with reduced power consumption
-
- 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
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/70—Masking faults in memories by using spares or by reconfiguring
- G11C29/78—Masking faults in memories by using spares or by reconfiguring using programmable devices
- G11C29/783—Masking faults in memories by using spares or by reconfiguring using programmable devices with refresh of replacement cells, e.g. in DRAMs
Landscapes
- Dram (AREA)
- For Increasing The Reliability Of Semiconductor Memories (AREA)
Abstract
【解決手段】ロウアドレスXAddに基づいて複数のメモリマットのいずれかを選択するとともに、選択されたメモリマットに含まれるワード線WLのいずれかを選択するロウデコーダ12と、カラムアドレスYAddに基づいて選択されたメモリマットに含まれるビット線BLのいずれかを選択するカラムデコーダ13と、カラムアドレスYAddが不良ビット線のアドレスYRAddと一致したことに応答して冗長ビット線RBLを選択するカラム救済回路33とを備える。ロウアドレスXAddがアクティブコマンドに応答して供給された場合にはカラム救済回路33の動作を許可し、リフレッシュコマンドに応答して供給された場合にはカラム救済回路33の動作を禁止することにより、無駄なカラム救済回路の動作による消費電流を低減する。
【選択図】図5
Description
11 メモリセルアレイ
11a カラム冗長セルアレイ
12 ロウデコーダ
13 カラムデコーダ
13a 冗長カラムデコーダ
14 センス回路
14a 冗長センス回路
15 データ入出力部
21 ロウ系制御回路
22 ロウプリデコーダ
23 リフレッシュカウンタ
31 カラム系制御回路
32 カラムプリデコーダ
33 カラム救済回路
33a デコード回路
33b セレクタ
40 コマンドデコーダ
50 NORゲート回路(判定回路)
BL ビット線
CF0〜CFm ヒューズセット
CMP アドレス比較回路
COL カラムアクセス回路
CTL 制御回路
MAT0〜MATm メモリマット
MC メモリセル
RBL 冗長ビット線
REG レジスタ回路
RMC 冗長メモリセル
ROW ロウアクセス回路
RWL 冗長ワード線
SEL0〜SELm セレクタ
WL ワード線
Claims (6)
- 複数のワード線と、複数のビット線と、少なくとも一つの冗長ビット線と、前記ワード線と前記ビット線との交点及び前記ワード線と前記冗長ビット線との交点に配置された複数のメモリセルとをそれぞれ有する複数のメモリマットと、
ロウアドレスに基づいて、前記複数のメモリマットのいずれかを選択するとともに、前記選択されたメモリマットに含まれる前記複数のワード線のいずれかを選択するロウデコーダと、
カラムアドレスに基づいて、前記選択されたメモリマットに含まれる前記複数のビット線のいずれかを選択するカラムデコーダと、
前記カラムアドレスが不良ビット線のアドレスと一致したことに応答して、前記カラムアドレスに基づき選択されるべきビット線の代わりに前記冗長ビット線を選択するカラム救済回路と、
前記ロウアドレスが第1のコマンドに応答して前記ロウデコーダに供給された場合には前記カラム救済回路の動作を許可し、前記ロウアドレスが第2のコマンドに応答して前記ロウデコーダに供給された場合には前記カラム救済回路の動作を禁止する判定回路と、を備えることを特徴とする半導体装置。 - 前記第1のコマンドはアクティブコマンドであり、前記第2のコマンドはリフレッシュコマンドであることを特徴とする請求項1に記載の半導体装置。
- 前記カラム救済回路は、前記不良ビット線のアドレスを記憶するアドレス記憶回路を含み、
前記判定回路は、前記第2のコマンドに応答して前記アドレス記憶回路からの前記不良ビット線のアドレスの読み出しを禁止する、ことを特徴とする請求項1又は2に記載の半導体装置。 - 前記アドレス記憶回路は、複数の不揮発性記憶素子からなることを特徴とする請求項3に記載の半導体装置。
- 前記アドレス記憶回路は、前記複数のメモリマットごとに設けられており、
前記判定回路は、前記第2のコマンドに応答して、前記選択されたメモリマットに応じた前記アドレス記憶回路の選択動作を無効化する、ことを特徴とする請求項3又は4に記載の半導体装置。 - 前記カラム系制御回路は、前記カラムアドレスと前記不良ビット線のアドレスとを比較するアドレス比較回路をさらに含み、
前記判定回路は、前記第2のコマンドに応答して前記アドレス比較回路による比較動作を無効化する、ことを特徴とする請求項3乃至5のいずれか一項に記載の半導体装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011032839A JP2012174297A (ja) | 2011-02-18 | 2011-02-18 | 半導体装置 |
US13/396,985 US8638625B2 (en) | 2011-02-18 | 2012-02-15 | Semiconductor device having redundant bit line provided to replace defective bit line |
US14/163,368 US8837242B2 (en) | 2011-02-18 | 2014-01-24 | Semiconductor device and method including redundant bit line provided to replace defective bit line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011032839A JP2012174297A (ja) | 2011-02-18 | 2011-02-18 | 半導体装置 |
Publications (1)
Publication Number | Publication Date |
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JP2012174297A true JP2012174297A (ja) | 2012-09-10 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2011032839A Abandoned JP2012174297A (ja) | 2011-02-18 | 2011-02-18 | 半導体装置 |
Country Status (2)
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US (2) | US8638625B2 (ja) |
JP (1) | JP2012174297A (ja) |
Cited By (1)
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---|---|---|---|---|
WO2014115601A1 (ja) * | 2013-01-28 | 2014-07-31 | ピーエスフォー ルクスコ エスエイアールエル | 半導体装置 |
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US9324398B2 (en) | 2013-02-04 | 2016-04-26 | Micron Technology, Inc. | Apparatuses and methods for targeted refreshing of memory |
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JP2017182854A (ja) | 2016-03-31 | 2017-10-05 | マイクロン テクノロジー, インク. | 半導体装置 |
US10490251B2 (en) | 2017-01-30 | 2019-11-26 | Micron Technology, Inc. | Apparatuses and methods for distributing row hammer refresh events across a memory device |
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US10580475B2 (en) | 2018-01-22 | 2020-03-03 | Micron Technology, Inc. | Apparatuses and methods for calculating row hammer refresh addresses in a semiconductor device |
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US11152050B2 (en) | 2018-06-19 | 2021-10-19 | Micron Technology, Inc. | Apparatuses and methods for multiple row hammer refresh address sequences |
US10490250B1 (en) * | 2018-08-14 | 2019-11-26 | Micron Technology, Inc. | Apparatuses for refreshing memory of a semiconductor device |
US10685696B2 (en) | 2018-10-31 | 2020-06-16 | Micron Technology, Inc. | Apparatuses and methods for access based refresh timing |
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JPH03105799A (ja) * | 1989-09-20 | 1991-05-02 | Hitachi Ltd | 冗長メモリを有する半導体記憶装置 |
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-
2011
- 2011-02-18 JP JP2011032839A patent/JP2012174297A/ja not_active Abandoned
-
2012
- 2012-02-15 US US13/396,985 patent/US8638625B2/en not_active Expired - Fee Related
-
2014
- 2014-01-24 US US14/163,368 patent/US8837242B2/en not_active Expired - Fee Related
Patent Citations (5)
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JPS61294689A (ja) * | 1985-06-21 | 1986-12-25 | Hitachi Ltd | ダイナミツク型ram |
JPH03105799A (ja) * | 1989-09-20 | 1991-05-02 | Hitachi Ltd | 冗長メモリを有する半導体記憶装置 |
JP2003217294A (ja) * | 2001-11-16 | 2003-07-31 | Fujitsu Ltd | 半導体記憶装置、及び冗長判定方法 |
JP2004063023A (ja) * | 2002-07-30 | 2004-02-26 | Renesas Technology Corp | 半導体記憶装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014115601A1 (ja) * | 2013-01-28 | 2014-07-31 | ピーエスフォー ルクスコ エスエイアールエル | 半導体装置 |
Also Published As
Publication number | Publication date |
---|---|
US20120213021A1 (en) | 2012-08-23 |
US8638625B2 (en) | 2014-01-28 |
US20140140155A1 (en) | 2014-05-22 |
US8837242B2 (en) | 2014-09-16 |
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