JP7332493B2 - メモリシステムおよび半導体記憶装置 - Google Patents
メモリシステムおよび半導体記憶装置 Download PDFInfo
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- JP7332493B2 JP7332493B2 JP2020013313A JP2020013313A JP7332493B2 JP 7332493 B2 JP7332493 B2 JP 7332493B2 JP 2020013313 A JP2020013313 A JP 2020013313A JP 2020013313 A JP2020013313 A JP 2020013313A JP 7332493 B2 JP7332493 B2 JP 7332493B2
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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
- G11C11/4074—Power supply or voltage generation circuits, e.g. bias voltage generators, substrate voltage generators, back-up power, power control circuits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C5/00—Details of stores covered by group G11C11/00
- G11C5/14—Power supply arrangements, e.g. power down, chip selection or deselection, layout of wirings or power grids, or multiple supply levels
- G11C5/147—Voltage reference generators, voltage or current regulators; Internally lowered supply levels; Compensation for voltage drops
-
- 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
- G11C11/4085—Word line control circuits, e.g. word line drivers, - boosters, - pull-up, - pull-down, - precharge
-
- 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
-
- 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
- G11C11/41—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 static cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger
- G11C11/411—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 static cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger using bipolar transistors only
- G11C11/4113—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 static cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger using bipolar transistors only with at least one cell access to base or collector of at least one of said transistors, e.g. via access diodes, access transistors
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/06—Auxiliary circuits, e.g. for writing into memory
- G11C16/08—Address circuits; Decoders; Word-line control circuits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/06—Auxiliary circuits, e.g. for writing into memory
- G11C16/10—Programming or data input circuits
- G11C16/20—Initialising; Data preset; Chip identification
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/06—Auxiliary circuits, e.g. for writing into memory
- G11C16/30—Power supply circuits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/04—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS
- G11C16/0483—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells having several storage transistors connected in series
-
- 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
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Read Only Memory (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Description
図1は、第1の実施形態にかかるメモリシステムの構成の一例を示す模式的な図である。図1に示されるように、メモリシステム100は、ホスト200と所定の通信インタフェースで接続される。ホスト200は、例えばパーソナルコンピュータ、携帯情報端末、またはサーバなどが該当する。メモリシステム100は、ホスト200から種々の要求を受け付けることができる。また、メモリシステム100は、外部電源300に接続されており、外部電源300からの電力の供給を受ける。
図7は、第2の実施形態にかかるメモリチップの構成の一例を示す図である。第2の実施形態によれば、メモリチップ30aは、第1の実施形態にかかるメモリチップ30からダイオード319が省略された構成を備えている。
図10は、第3の実施形態にかかるメモリシステムの構成の一例を示す模式的な図である。第3の実施形態にかかるメモリシステム100cは、第1の実施形態にかかるメモリシステム100が備える電源IC2に替えて、CPU11に信号線で接続された電源IC2cを備えている。さらに、第3の実施形態にかかるメモリシステム100cは、キャパシタ5の他に、キャパシタ6を備えている。キャパシタ6は、第2キャパシタの一例である。
Claims (6)
- 半導体記憶装置と、
第1電力を生成する電源回路と、
前記第1電力に基づいて動作し、前記半導体記憶装置にコマンドを送信するメモリコントローラと、
を備え、
前記半導体記憶装置は、
前記第1電力が入力される第1端子と、
前記第1端子の電圧が降下した後でも利用可能な第2電力が入力される第2端子と、
メモリセルトランジスタの制御ゲートに接続されたワード線と、
前記第1端子に入力された前記第1電力に基づいて前記ワード線に前記コマンドに応じた電圧を印加する第1回路と、
前記第1端子の電圧が降下した際に、前記第2端子に入力された前記第2電力を用いて前記ワード線の電荷を放電する第2回路と、
を備える、
メモリシステム。 - 前記メモリシステムは、前記第2電力を蓄える第1キャパシタをさらに備え、
前記第1端子には前記電源回路から前記第1電力が入力され、
前記第2端子には前記第1キャパシタから前記第2電力が入力される、
請求項1に記載のメモリシステム。 - 前記半導体記憶装置は、前記第1端子に入力された前記第1電力の一部を前記第2端子に向けて流すダイオードをさらに備え、
前記第1キャパシタには、前記ダイオードと前記第2端子とを介して前記第1電力の前記一部が入力されて、前記第1キャパシタは、前記入力された前記第1電力の前記一部を前記第2電力として蓄える、
請求項2に記載のメモリシステム。 - 前記メモリシステムは、前記電源回路によって生成された前記第1電力を蓄える、前記第1キャパシタと異なる第2キャパシタをさらに備え、
前記電源回路は、外部から供給される第3電力に基づいて前記第1電力を生成し、
前記第3電力の電圧が降下した際に、前記第2キャパシタに蓄えられた前記第1電力が前記第1端子に入力される、
請求項2または3に記載のメモリシステム。 - 第1電力が入力される第1端子と、
前記第1端子の電圧が降下した後でも利用可能な第2電力が入力される第2端子と、
メモリセルトランジスタの制御ゲートに接続されたワード線と、
前記第1端子に入力された前記第1電力に基づいて前記ワード線にコマンドに応じた電圧を印加する第1回路と、
前記第1端子の電圧が降下した際に、前記第2端子に入力された前記第2電力を用いて前記ワード線の電荷を放電する第2回路と、
を備える、
半導体記憶装置。 - 前記第1端子に入力された前記第1電力の一部を前記第2端子に向けて流すダイオードをさらに備え、
前記第2端子には前記半導体記憶装置の外部に設けられたキャパシタが接続され、
前記キャパシタには、前記ダイオードと前記第2端子とを介して前記第1電力の前記一部が入力されて、前記キャパシタは、前記入力された前記第1電力の前記一部を前記第2電力として蓄える、
請求項5に記載の半導体記憶装置。
Priority Applications (2)
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JP2020013313A JP7332493B2 (ja) | 2020-01-30 | 2020-01-30 | メモリシステムおよび半導体記憶装置 |
US17/160,885 US11404101B2 (en) | 2020-01-30 | 2021-01-28 | Memory system and semiconductor storage device configured to discharge word line during abrupt power interrupt |
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JP2020013313A JP7332493B2 (ja) | 2020-01-30 | 2020-01-30 | メモリシステムおよび半導体記憶装置 |
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JP2021119550A JP2021119550A (ja) | 2021-08-12 |
JP7332493B2 true JP7332493B2 (ja) | 2023-08-23 |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012142058A (ja) | 2011-01-05 | 2012-07-26 | Toshiba Corp | 半導体記憶装置 |
WO2013054389A1 (ja) | 2011-10-11 | 2013-04-18 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
JP2018142392A (ja) | 2017-02-24 | 2018-09-13 | アズビル株式会社 | メモリ電源供給回路、制御装置、およびメモリ電源供給方法 |
Family Cites Families (10)
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KR100875295B1 (ko) | 2007-03-30 | 2008-12-23 | 삼성전자주식회사 | 향상된 성능을 갖는 플래시 메모리 장치 |
US8116145B2 (en) | 2008-08-29 | 2012-02-14 | Kilopass Technology, Inc. | Method and apparatus for programming auto shut-off |
JP2010232848A (ja) | 2009-03-26 | 2010-10-14 | Oki Semiconductor Co Ltd | 半導体メモリの内部電源のスタートアップ回路 |
KR20110015273A (ko) * | 2009-08-07 | 2011-02-15 | 삼성전자주식회사 | 보조 전원 장치를 포함하는 사용자 장치 |
KR101750055B1 (ko) * | 2010-09-13 | 2017-06-22 | 삼성전자주식회사 | 보조 전원 장치, 그것을 포함하는 메모리 시스템, 및 그것의 셀 균형 방법 |
US8904161B2 (en) * | 2010-10-20 | 2014-12-02 | Samsung Electronics Co., Ltd. | Memory system and reset method thereof to prevent nonvolatile memory corruption due to premature power loss |
US9190120B2 (en) * | 2010-10-20 | 2015-11-17 | Samsung Electronics Co., Ltd. | Storage device including reset circuit and method of resetting thereof |
KR20170006980A (ko) * | 2015-07-10 | 2017-01-18 | 에스케이하이닉스 주식회사 | 파워 온 리셋 회로 및 이를 포함하는 반도체 메모리 장치 |
KR102475458B1 (ko) * | 2016-05-30 | 2022-12-08 | 에스케이하이닉스 주식회사 | 파워 온 리셋 회로 및 이를 포함하는 반도체 메모리 장치 |
KR102634791B1 (ko) * | 2016-11-24 | 2024-02-08 | 에스케이하이닉스 주식회사 | 파워 온 리셋 회로 및 이를 포함하는 반도체 메모리 장치 |
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- 2021-01-28 US US17/160,885 patent/US11404101B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012142058A (ja) | 2011-01-05 | 2012-07-26 | Toshiba Corp | 半導体記憶装置 |
WO2013054389A1 (ja) | 2011-10-11 | 2013-04-18 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
JP2018142392A (ja) | 2017-02-24 | 2018-09-13 | アズビル株式会社 | メモリ電源供給回路、制御装置、およびメモリ電源供給方法 |
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US11404101B2 (en) | 2022-08-02 |
US20210241812A1 (en) | 2021-08-05 |
JP2021119550A (ja) | 2021-08-12 |
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