KR20030088131A - Mram 반도체 메모리 장치를 동작시키는 방법 - Google Patents
Mram 반도체 메모리 장치를 동작시키는 방법 Download PDFInfo
- Publication number
- KR20030088131A KR20030088131A KR10-2003-7013295A KR20037013295A KR20030088131A KR 20030088131 A KR20030088131 A KR 20030088131A KR 20037013295 A KR20037013295 A KR 20037013295A KR 20030088131 A KR20030088131 A KR 20030088131A
- Authority
- KR
- South Korea
- Prior art keywords
- tmr
- memory cell
- magnetic layer
- current signal
- information
- 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.)
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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
- G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
- G11C11/14—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements
- G11C11/15—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements using multiple magnetic layers
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Semiconductor Memories (AREA)
- Mram Or Spin Memory Techniques (AREA)
- Hall/Mr Elements (AREA)
Abstract
Description
Claims (4)
- 메모리 셀 어레이 내에서 그 단부 중 한쪽 단부가 비트 라인(BL)에 접속되고, 다른 쪽 단부가 워드 라인(WL)에 접속되는 복수의 TMR 메모리 셀을 구비한 MRAM 반도체 메모리 장치를 동작시키는 방법에 있어서,정보의 아이템을 판독하는 동안, TMR 메모리 셀(TMR)은 전류 펄스에 의해 자장 변화를 순간적으로 반전가능하며, 그 결과로 변경된 전류 신호는 원래의 전류 신호와 비교되는방법.
- 제 1 항에 있어서,상기 정보는 상기 TMR 메모리 셀(TMR)의 소프트 마그네틱 층에 저장되고,판독 중에, 판독 라인(BL)의 전류 신호는 외부로부터 인가되는 자기장없이 처음에 검출되며,이후에, 전기적으로 비 접속된 기록 라인(WL1, WL2)을 지나는 전류 펄스에 의해서, 상기 소프트 마그네틱 층(13)의 자화는 자화 용이 축(easy magnetization axis)에 대해서 반전가능하게 회전되고,그 결과로 변경된 판독 라인(BL) 내의 전류 신호는 처음에 검출된 전류 신호와 비교되며,상기 저장된 정보는 이 비교의 결과로부터 결정되는방법.
- 제 2 항에 있어서,상기 전류 펄스에 의해 이루어지는 상기 자화 용이 층에 대한 상기 소프트 마그네틱 층의 회전 각도는 약 45° 내지 약 60°인방법.
- 제 1 항에 있어서,상기 정보는 상기 TMR 메모리 셀(TMR)의 상기 하드 마그네틱 층(11)에 저장되고,상기 전기적으로 비 접속된 기록 라인(WL)을 지나는 전류 펄스에 의해서, 상기 소프트 마그네틱 층(13)은 상기 자화 용이 축에 평행한 미리 정해진 방향으로 되며,결과적으로 변경되는 판독 라인(BL) 내의 상기 전류 신호가 후속적으로 측정되고,상기 측정된 값은 상기 소프트 마그네틱 층(11)의 방향의 정확하게 반대인 경우의 전류 신호와 비교되며,상기 TMR 메모리 셀(TMR)의 저장되는 정보는 이 비교에 의해 결정되는방법.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10118196A DE10118196C2 (de) | 2001-04-11 | 2001-04-11 | Verfahren zum Betrieb einer MRAM-Halbleiterspeicheranordnung |
DE10118196.5 | 2001-04-11 | ||
PCT/DE2002/001255 WO2002084705A2 (de) | 2001-04-11 | 2002-04-05 | Verfahren zum betrieb einer mram-halbleiterspeicheranordnung |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20030088131A true KR20030088131A (ko) | 2003-11-17 |
KR100521527B1 KR100521527B1 (ko) | 2005-10-12 |
Family
ID=7681296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-2003-7013295A Expired - Fee Related KR100521527B1 (ko) | 2001-04-11 | 2002-04-05 | Mram 반도체 메모리 장치를 동작시키는 방법 |
Country Status (7)
Country | Link |
---|---|
US (1) | US6807089B2 (ko) |
JP (1) | JP2004530244A (ko) |
KR (1) | KR100521527B1 (ko) |
CN (1) | CN1503976B (ko) |
DE (1) | DE10118196C2 (ko) |
TW (1) | TW559810B (ko) |
WO (1) | WO2002084705A2 (ko) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6847544B1 (en) * | 2003-10-20 | 2005-01-25 | Hewlett-Packard Development Company, L.P. | Magnetic memory which detects changes between first and second resistive states of memory cell |
US7042757B2 (en) * | 2004-03-04 | 2006-05-09 | Hewlett-Packard Development Company, L.P. | 1R1D MRAM block architecture |
DE102004041907B3 (de) | 2004-08-30 | 2006-03-23 | Infineon Technologies Ag | Resistive Speicheranordnung, insbesondere CBRAM-Speicher |
US7251167B2 (en) * | 2004-12-29 | 2007-07-31 | Macronix International Co., Ltd. | Method for programming multi-level nitride read-only memory cells |
JP2006294179A (ja) * | 2005-04-14 | 2006-10-26 | Renesas Technology Corp | 不揮発性記憶装置 |
US7577018B2 (en) * | 2006-03-07 | 2009-08-18 | Tdk Corporation | Readout circuit of magnetic memory |
US20080162856A1 (en) * | 2006-12-29 | 2008-07-03 | Motorola, Inc. | Method for dynamic memory allocation on reconfigurable logic |
US8488357B2 (en) | 2010-10-22 | 2013-07-16 | Magic Technologies, Inc. | Reference cell architectures for small memory array block activation |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5703805A (en) * | 1996-05-08 | 1997-12-30 | Motorola | Method for detecting information stored in a MRAM cell having two magnetic layers in different thicknesses |
JP2000187976A (ja) * | 1998-12-17 | 2000-07-04 | Canon Inc | 磁性薄膜メモリおよびその記録再生方法 |
US5982660A (en) * | 1998-08-27 | 1999-11-09 | Hewlett-Packard Company | Magnetic memory cell with off-axis reference layer orientation for improved response |
DE19853447A1 (de) | 1998-11-19 | 2000-05-25 | Siemens Ag | Magnetischer Speicher |
US6134139A (en) * | 1999-07-28 | 2000-10-17 | Hewlett-Packard | Magnetic memory structure with improved half-select margin |
DE19947118C1 (de) * | 1999-09-30 | 2001-03-15 | Infineon Technologies Ag | Verfahren und Schaltungsanordnung zum Bewerten des Informationsgehalts einer Speicherzelle |
-
2001
- 2001-04-11 DE DE10118196A patent/DE10118196C2/de not_active Expired - Fee Related
-
2002
- 2002-04-02 TW TW091106639A patent/TW559810B/zh not_active IP Right Cessation
- 2002-04-05 KR KR10-2003-7013295A patent/KR100521527B1/ko not_active Expired - Fee Related
- 2002-04-05 CN CN028080637A patent/CN1503976B/zh not_active Expired - Fee Related
- 2002-04-05 WO PCT/DE2002/001255 patent/WO2002084705A2/de active Application Filing
- 2002-04-05 JP JP2002581557A patent/JP2004530244A/ja active Pending
-
2003
- 2003-10-14 US US10/685,082 patent/US6807089B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20040083328A1 (en) | 2004-04-29 |
KR100521527B1 (ko) | 2005-10-12 |
DE10118196C2 (de) | 2003-02-27 |
CN1503976A (zh) | 2004-06-09 |
CN1503976B (zh) | 2010-09-08 |
WO2002084705A2 (de) | 2002-10-24 |
DE10118196A1 (de) | 2002-10-24 |
WO2002084705A3 (de) | 2003-05-01 |
TW559810B (en) | 2003-11-01 |
JP2004530244A (ja) | 2004-09-30 |
US6807089B2 (en) | 2004-10-19 |
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