KR20100054985A - 모드 가변 리프레쉬 동작을 갖는 반도체 메모리 장치 - Google Patents
모드 가변 리프레쉬 동작을 갖는 반도체 메모리 장치 Download PDFInfo
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- KR20100054985A KR20100054985A KR1020080113856A KR20080113856A KR20100054985A KR 20100054985 A KR20100054985 A KR 20100054985A KR 1020080113856 A KR1020080113856 A KR 1020080113856A KR 20080113856 A KR20080113856 A KR 20080113856A KR 20100054985 A KR20100054985 A KR 20100054985A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 28
- 230000015654 memory Effects 0.000 claims abstract description 130
- 230000004913 activation Effects 0.000 claims abstract description 9
- 239000003990 capacitor Substances 0.000 claims abstract description 8
- 230000004044 response Effects 0.000 claims abstract description 8
- 230000000295 complement effect Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 2
- 238000013500 data storage Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 230000009977 dual effect Effects 0.000 description 7
- 101000589392 Homo sapiens Pannexin-1 Proteins 0.000 description 2
- 102100032361 Pannexin-1 Human genes 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C8/00—Arrangements for selecting an address in a digital store
- G11C8/10—Decoders
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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
- G11C11/4063—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
- G11C11/4096—Input/output [I/O] data management or control circuits, e.g. reading or writing circuits, I/O drivers or bit-line switches
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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
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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
- G11C11/40615—Internal triggering or timing of refresh, e.g. hidden refresh, self refresh, pseudo-SRAMs
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- G—PHYSICS
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- 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
- G11C11/40622—Partial refresh of memory arrays
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- G—PHYSICS
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- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
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- 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
- G11C11/4085—Word line control circuits, e.g. word line drivers, - boosters, - pull-up, - pull-down, - precharge
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- G—PHYSICS
- G11—INFORMATION STORAGE
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- 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
- G11C11/4091—Sense or sense/refresh amplifiers, or associated sense circuitry, e.g. for coupled bit-line precharging, equalising or isolating
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- G—PHYSICS
- G11—INFORMATION STORAGE
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- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
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- 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
- G11C11/4094—Bit-line management or control circuits
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- 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
- G11C7/1075—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers for multiport memories each having random access ports and serial ports, e.g. video RAM
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/12—Bit line control circuits, e.g. drivers, boosters, pull-up circuits, pull-down circuits, precharging circuits, equalising circuits, for bit lines
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C8/00—Arrangements for selecting an address in a digital store
- G11C8/08—Word line control circuits, e.g. drivers, boosters, pull-up circuits, pull-down circuits, precharging circuits, for word lines
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- 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
- G11C2211/4013—Memory devices with multiple cells per bit, e.g. twin-cells
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- 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
- G11C2211/4065—Low level details of refresh operations
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Abstract
Description
Claims (10)
- 비트라인 페어에 연결된 비트라인 센스앰프와;하나의 억세스 트랜지스터와 스토리지 커패시터로 이루어진 메모리 셀이 워드라인 마다 복수로 연결되고 상기 비트라인 페어 중의 적어도 하나에 복수로 연결된 구조의 메모리 뱅크를 복수로 가지는 메모리 셀 어레이와;사용 덴시티 선택에 따라 결정되는 설정모드 인가신호에 응답하여 상기 비트라인 센스앰프에 공유된 상기 워드라인들 중 설정된 개수의 워드라인들이 동시에 활성화되도록 하여 적어도 2개 이상의 메모리 셀에 외부적으로 동일한 어드레스에 대응된 데이터가 라이트 또는 리드되도록 제어하는 워드라인 액티베이션 제어부를 구비함을 특징으로 하는 반도체 메모리 장치.
- 제1항에 있어서, 상기 데이터는 동일한 비트라인 센스앰프에 의해 라이트 또는 리드됨을 특징으로 하는 반도체 메모리 장치.
- 제1항에 있어서, 상기 복수의 워드라인들은 비트라인 페어 중 하나의 비트라인에 모두 한꺼번에 배치되거나, 상기 비트라인 페어를 구성하는 비트라인과 상보비트라인에 일정수로 분리되어 배치됨을 특징으로 하는 반도체 메모리 장치.
- 제3항에 있어서, 상기 복수의 워드라인들이 상기 비트라인과 상보 비트라인에 일정수로 분리되어 배치되는 경우에 상기 비트라인과 워드라인에 연결된 메모리 셀과 상기 상보 비트라인과 워드라인에 연결된 메모리 셀에는 서로 반대 논리의 데이터가 라이트됨을 특징으로 하는 반도체 메모리 장치.
- 제1항에 있어서, 상기 설정모드 인가신호는 모드 레지스터 셋 신호에 의해 가변됨을 특징으로 하는 반도체 메모리 장치.
- 제5항에 있어서, 상기 모드 레지스터 셋 신호의 변경에 의해 동시에 활성화되는 워드라인들의 개수가 변경되고 셀프 리프레쉬 상태로 진입하면 셀프 리프레쉬의 주기가 그에 따라 변경됨을 특징으로 하는 반도체 메모리 장치.
- 제5항에 있어서, 상기 워드라인 액티베이션 제어부는,인가되는 모드 레지스터 셋 신호를 받아 상기 설정모드 인가신호를 생성하는 모드 레지스터 셋부와;상기 설정모드 인가신호에 응답하여 데이터의 억세스를 위한 어드레스를 생 성하고 데이터 보존을 위한 리프레쉬 동작을 행하는 어드레스 및 리프레쉬 콘트롤부와;상기 어드레스 및 리프레쉬 콘트롤부와 연결되며 상기 설정모드 인가신호에 따라 로우 어드레스 디코딩을 행하여 상기 비트라인 센스앰프에 공유된 상기 워드라인들 중 설정된 개수의 워드라인들이 동시에 활성화되도록 하는 로우 디코더를 포함함을 특징으로 하는 반도체 메모리 장치.
- 비트라인 페어에 연결된 비트라인 센스앰프와;하나의 억세스 트랜지스터와 스토리지 커패시터로 이루어진 메모리 셀이 워드라인 마다 복수로 연결되고 상기 비트라인 페어 중의 적어도 하나에 복수로 연결된 구조의 메모리 뱅크를 복수로 가지는 메모리 셀 어레이와;모드 레지스터 셋 신호에 따라 상기 비트라인 센스앰프에 공유된 상기 워드라인들 중 설정된 개수의 워드라인들이 동시에 활성화되도록 하여 2의 배수의 메모리 셀들에 외부적으로 동일한 어드레스에 대응된 데이터가 억세스 되도록 제어하는 워드라인 액티베이션 제어부를 구비함을 특징으로 하는 반도체 메모리 장치.
- 제8항에 있어서, 상기 활성화되는 메모리 셀들의 수가 늘어 날 수록 셀프 리프레쉬 상태에서의 셀프 리프레쉬의 주기는 길어짐을 특징으로 하는 반도체 메모리 장치.
- 제9항에 있어서, 상기 복수의 워드라인들은 비트라인 페어 중 하나의 비트라인에 모두 한꺼번에 배치되거나, 상기 비트라인 페어를 구성하는 비트라인과 상보비트라인에 일정수로 분리되어 배치됨을 특징으로 하는 반도체 메모리 장치.
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KR1020080113856A KR20100054985A (ko) | 2008-11-17 | 2008-11-17 | 모드 가변 리프레쉬 동작을 갖는 반도체 메모리 장치 |
US12/585,317 US20100124138A1 (en) | 2008-11-17 | 2009-09-11 | Semiconductor memory device having variable-mode refresh operation |
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Cited By (2)
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KR20160045774A (ko) * | 2013-08-22 | 2016-04-27 | 르네사스 일렉트로닉스 가부시키가이샤 | 트윈 셀의 기억 데이터를 마스크해서 출력하는 반도체 장치 |
US10297305B1 (en) | 2017-10-30 | 2019-05-21 | SK Hynix Inc. | Memory device having twin cell mode and refresh method thereof |
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KR101131552B1 (ko) * | 2010-02-24 | 2012-04-04 | 주식회사 하이닉스반도체 | 상 변화 메모리 장치 |
US20120036315A1 (en) * | 2010-08-09 | 2012-02-09 | International Business Machines Corporation | Morphing Memory Architecture |
US9064603B1 (en) | 2012-11-28 | 2015-06-23 | Samsung Electronics Co., Ltd. | Semiconductor memory device and memory system including the same |
US10468087B2 (en) | 2016-07-28 | 2019-11-05 | Micron Technology, Inc. | Apparatuses and methods for operations in a self-refresh state |
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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US10685696B2 (en) | 2018-10-31 | 2020-06-16 | Micron Technology, Inc. | Apparatuses and methods for access based refresh timing |
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CN111354393B (zh) | 2018-12-21 | 2023-10-20 | 美光科技公司 | 用于目标刷新操作的时序交错的设备和方法 |
US10957377B2 (en) | 2018-12-26 | 2021-03-23 | Micron Technology, Inc. | Apparatuses and methods for distributed targeted refresh operations |
US11615831B2 (en) | 2019-02-26 | 2023-03-28 | Micron Technology, Inc. | Apparatuses and methods for memory mat refresh sequencing |
US11227649B2 (en) * | 2019-04-04 | 2022-01-18 | Micron Technology, Inc. | Apparatuses and methods for staggered timing of targeted refresh operations |
US11069393B2 (en) | 2019-06-04 | 2021-07-20 | Micron Technology, Inc. | Apparatuses and methods for controlling steal rates |
US10978132B2 (en) | 2019-06-05 | 2021-04-13 | Micron Technology, Inc. | Apparatuses and methods for staggered timing of skipped refresh operations |
US11302374B2 (en) | 2019-08-23 | 2022-04-12 | Micron Technology, Inc. | Apparatuses and methods for dynamic refresh allocation |
US11302377B2 (en) | 2019-10-16 | 2022-04-12 | Micron Technology, Inc. | Apparatuses and methods for dynamic targeted refresh steals |
US11309010B2 (en) | 2020-08-14 | 2022-04-19 | Micron Technology, Inc. | Apparatuses, systems, and methods for memory directed access pause |
US11380382B2 (en) | 2020-08-19 | 2022-07-05 | Micron Technology, Inc. | Refresh logic circuit layout having aggressor detector circuit sampling circuit and row hammer refresh control circuit |
US11348631B2 (en) | 2020-08-19 | 2022-05-31 | Micron Technology, Inc. | Apparatuses, systems, and methods for identifying victim rows in a memory device which cannot be simultaneously refreshed |
US11557331B2 (en) | 2020-09-23 | 2023-01-17 | Micron Technology, Inc. | Apparatuses and methods for controlling refresh operations |
US11222686B1 (en) | 2020-11-12 | 2022-01-11 | Micron Technology, Inc. | Apparatuses and methods for controlling refresh timing |
US11264079B1 (en) | 2020-12-18 | 2022-03-01 | Micron Technology, Inc. | Apparatuses and methods for row hammer based cache lockdown |
US12112787B2 (en) | 2022-04-28 | 2024-10-08 | Micron Technology, Inc. | Apparatuses and methods for access based targeted refresh operations |
US12125514B2 (en) | 2022-04-28 | 2024-10-22 | Micron Technology, Inc. | Apparatuses and methods for access based refresh operations |
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JP2002373489A (ja) * | 2001-06-15 | 2002-12-26 | Mitsubishi Electric Corp | 半導体記憶装置 |
US6751143B2 (en) * | 2002-04-11 | 2004-06-15 | Micron Technology, Inc. | Method and system for low power refresh of dynamic random access memories |
US7006370B1 (en) * | 2003-11-18 | 2006-02-28 | Lsi Logic Corporation | Memory cell architecture |
US7916567B2 (en) * | 2008-03-07 | 2011-03-29 | ProMOS Technologies Pte. Ltd | Twin cell architecture for integrated circuit dynamic random access memory (DRAM) devices and those devices incorporating embedded DRAM |
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KR20160045774A (ko) * | 2013-08-22 | 2016-04-27 | 르네사스 일렉트로닉스 가부시키가이샤 | 트윈 셀의 기억 데이터를 마스크해서 출력하는 반도체 장치 |
US10297305B1 (en) | 2017-10-30 | 2019-05-21 | SK Hynix Inc. | Memory device having twin cell mode and refresh method thereof |
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