KR20030070119A - 비휘발성 메모리에 부분적 블럭 데이터 프로그래밍 및판독 작동 - Google Patents
비휘발성 메모리에 부분적 블럭 데이터 프로그래밍 및판독 작동 Download PDFInfo
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- 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
- G11C16/102—External programming circuits, e.g. EPROM programmers; In-circuit programming or reprogramming; EPROM emulators
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
- G06F12/023—Free address space management
- G06F12/0238—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory
- G06F12/0246—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory in block erasable memory, e.g. flash memory
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- 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
- G11C16/102—External programming circuits, e.g. EPROM programmers; In-circuit programming or reprogramming; EPROM emulators
- G11C16/105—Circuits or methods for updating contents of nonvolatile memory, especially with 'security' features to ensure reliable replacement, i.e. preventing that old data is lost before new data is reliably written
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/10—Providing a specific technical effect
- G06F2212/1016—Performance improvement
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/10—Providing a specific technical effect
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/72—Details relating to flash memory management
- G06F2212/7202—Allocation control and policies
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/72—Details relating to flash memory management
- G06F2212/7208—Multiple device management, e.g. distributing data over multiple flash devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/72—Details relating to flash memory management
- G06F2212/7209—Validity control, e.g. using flags, time stamps or sequence numbers
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2216/00—Indexing scheme relating to G11C16/00 and subgroups, for features not directly covered by these groups
- G11C2216/12—Reading and writing aspects of erasable programmable read-only memories
- G11C2216/16—Flash programming of all the cells in an array, sector or block simultaneously
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Abstract
Description
Claims (22)
- 비휘발성 메모리 시스템에서 최초 및 교체 데이터를 동시에 저장하는 방법에 있어서,동일한 논리적 어드레스에 의해 최초 데이터와 교체 데이터를 식별하는 단계; 및최초 데이터와 교체 데이터가 상기 메모리에 프로그래밍되었던 상대적인 시간의 트랙을 유지시킴으로써 교체 데이터를 최초 데이터로부터 구별하는 단계를 포함하는 것을 특징으로 하는 방법.
- 비휘발성 메모리 시스템에서 최초 및 교체 데이터를 저장 및 회수하는 방법에 있어서,동일한 논리적 어드레스에 의해 최초 데이터와 교체 데이터의 유니트를 식별하는 단계;메모리에 프로그래밍되었던 순서에서 역순으로 데이터의 유니트를 판독하는 단계; 및유니트가 판독되는 순서에 의해 동일한 논리적 어드레스를 갖는 최초 데이터의 유니트로부터 교체 데이터의 유니트를 구별하는 단계를 포함하는 것을 특징으로 하는 방법.
- 메모리 저장 엘리먼트의 다수 페이지로 개별적으로 구성된 메모리 저장 엘리먼트의 다수의 블럭을 구비하는 비휘발성 메모리 시스템에서, 상기 한개의 블럭중 적어도 또 다른 페이지에 있는 데이터가 교체되지 않을 때 다수의 블럭들중 한개 블럭의 적어도 한개 페이지내에서 대체된 데이터 대신에 새로운 데이터를 대용하는 방법에 있어서,새로운 데이터를 다수의 블럭들중 상기 하나의 블럭 또는 또 다른 블럭의 적어도 하나의 페이지로 프로그래밍하는 단계;대체된 데이터의 적어도 하나의 페이지와 새로운 데이터의 적어도 하나의 페이지를 공동의 논리적 어드레스에 의해 식별하는 단계; 및새로운 데이터와 대체된 데이터를 프로그래밍하는 상대적인 시간을 레코딩하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 3 항에 있어서, 프로그래밍의 상대적인 시간은 새로운 데이터와 대체된 데이터가 프로그래밍되는 개별적인 페이지에 레코딩되어, 새로운 데이터의 적어도 하나의 페이지는 프로그래밍의 레코딩된 상대적인 시간에 의해 대체된 데이터의 적어도 하나의 페이지와 구별되는 것을 특징으로 하는 방법.
- 제 3 항에 있어서, 프로그래밍의 상대적인 시간이 개별적인 블럭에 레코딩되어, 공동의 논리적 어드레스를 지닌 데이터를 구비하는 개별적인 블럭의 프로그래밍 순서를 식별하며, 개별적인 블럭내의 페이지들이 지정된 순서로 프로그래밍되어, 데이터의 새로운 페이지들이 블럭내의 그들의 상대적인 위치에 의해 개별적인 블럭내에서 데이터의 대체된 페이지들과 구별되는 것을 특징으로 하는 방법.
- 제 3 항에 있어서, 교체되지 않은 상기 한개 블럭의 적어도 또 다른 페이지에 있는 데이터는 대체된 데이터 대신에 새로운 데이터를 대용하는 부분으로서 상기 하나 또는 또 다른 블럭에 복사되지 않는 것을 특징으로 하는 방법.
- 제 3 항에 있어서, 어떠한 것도 대체된 데이터 대신에 새로운 데이터를 대용하는 부분으로서 대체된 데이터의 적어도 하나의 페이지에 기록되지 않는 것을 특징으로 하는 방법.
- 제 4 항에 있어서, 새로운 데이터와 대체된 데이터를 프로그래밍하는 상대적인 시간을 레코딩하는 단계는 새로운 데이터와 대체된 데이터가 프로그래밍되는 각각의 시간에서 클럭값을 저장하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 4 항에 있어서, 새로운 데이터와 대체된 데이터를 프로그래밍하는 상대적인 시간을 레코딩하는 단계는 새로운 데이터와 대체된 데이터가 프로그래밍되는 각각의 시간에서 번호 순서의 상이한 값을 저장하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 8 항 또는 제 9 항에 있어서, 새로운 데이터와 대체된 데이터를 프로그래밍하는 상대적인 시간을 지시하는 값을 저장하는 단계는 상기 값들이 관련있는 새로운 데이터와 대체되 데이터로서 동일한 페이지내에서 개별적인 값들을 저장하는 단계를 포함하는 것을 특징으로 방법.
- 제 3 항에 있어서, 새로운 데이터를 다수의 블럭들중 상기 한개 또는 다른 블럭의 적어도 하나의 페이지로 프로그래밍하는 단계는 상기 한개 또는 다른 블럭내에서 소정의 순서로 새로운 데이터를 첫번째로 이용가능한 사용되지 않은 페이지로 프로그래밍하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 3 항에 있어서, 대체된 데이터의 적어도 한개 페이지와 새로운 데이터의 적어도 한개 페이지를 공동의 논리적 어드레스에 의해 식별하는 단계는 공동의 논리적 어드레스의 적어도 일부분을 개별 페이지에 오버헤드 데이터로서 레코딩하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 12 항에 있어서, 공동의 논리적 어드레스에 대한 다중의 물리적 블럭 어드레스를 포함하는 휘발성 메모리에 테이블을 만드는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 4 항에 따라 갱신되었던 데이터를 판독하는 방법에 있어서,데이터의 페이지들을 상기 하나의 블럭으로부터 판독하며, 새로운 데이터가 그 안에 프로그래밍되었다면, 상기 다른 블럭으로부터 데이터의 페이지를 판독하는 단계;동일한 논리적 어드레스를 갖는 데이터의 임의의 다수 페이지를 식별하는 단계;동일한 논리적 어드레스를 갖는 가장 최근의 임의의 페이지를 식별하기 위해 새로운 데이터와 대체된 데이터를 프로그래밍하는 레코딩된 상대적인 시간을 이용하는 단계; 및갱신되지 않은 상기 한개 블럭의 적어도 또 다른 페이지의 페이지에 따라 동일한 논리적 어드레스를 갖는 가장 최근의 임의의 페이지에서 데이터를 어셈블링하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 5 항에 따라 갱신되었던 데이터를 판독하는 방법에 있어서,상기 하나의 블럭내에서 데이터의 페이지를 판독하며, 새로운 데이터가 그안에 프로그래밍되었다면, 또 다른 블럭을 프로그래밍되었던 것과 역순으로 데이터의 페이지를 판독하는 단계; 및데이터가 이미 판독되었던 페이지와 같은 동일한 논리적 페이지 어드레스를 갖는 데이터의 임의의 페이지를 판독된 것으로서 간과하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 14 항 또는 제 15 항에 있어서, 개별적인 메모리 저장 엘리먼트를 2개 이상의 저장 상태로 작동시켜서, 1개 비트 이상의 데이터를 각 저장 엘리먼트에 저장하는 단계를 더 포함하며, 데이터의 페이지들을 판독하는 단계는 개별적인 메모리 저장 엘리먼트로부터 2개 이상의 저장 상태를 판독하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 3 항 내지 제 9 항중 어느 한 항에 있어서, 개별적인 메모리 셀의 저장 엘리먼트를 2개 이상의 저장 상태로 작동시켜서, 1개 비트 이상의 데이터를 각 저장 엘리먼트에 저장하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 17 항에 있어서, 저장 엘리먼트는 개별적인 플로팅 게이트를 포함하는 것을 특징으로 하는 방법.
- 제 3 항 내지 제 9항중 어느 한 항에 있어서, 비휘발성 메모리 시스템은 호스트 시스템과 작동가능하게 연결된 일측을 따라 전기적 커넥터를 구비하는 동봉된 카드내에 형성된 것을 특징으로 하는 방법.
- 개별 서브-어레이가, 함께 삭제가능한 메모리 저장 엘리먼트의 최소 그룹을포함하는, 저장 엘리먼트의 다수의 비중첩 블럭으로 분할되며, 개별 블럭이, 함께 프로그래밍가능한 메모리 저장 엘리먼트의 최소 그룹인, 저장 엘리먼트의 다수의 페이지로 분할된, 적어도 2개의 서브-어레이로 구성된 메모리 저장 엘리먼트의 어레이를 구비하는 비휘발성 메모리 시스템을 작동시키는 방법에 있어서,그 구성요소 블럭이 1개 유니트로서 함께 삭제되는 메타블럭을 형성하도록 적어도 2개 서브-어레이중 개별 어레이로부터 적어도 1개 블럭을 링크시키는 단계, 및갱신되는 데이터가 저장된 서브-어레이에 상관없이 서브-어레이들중 지정된 것에서 또 다른 적어도 1개 블럭내의 페이지로 교체 데이터를 프로그래밍함으로써 블럭내의 모든 페이지보다 적은 임의의 메타블럭 구성요소 블럭들내의 최초 데이터의 페이지를 갱신하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 20 항에 있어서, 최초 및 교체 데이터를 저장하는 단계는:최초 및 교체 데이터를 동일한 논리적 어드레스에 의해 메모리 시스템에 식별시키는 단계, 및최초 및 교체 데이터가 메모리의 각각의 페이지에 프로그래밍되었던 상대적인 시간의 트랙을 유지시킴으로써 교체 데이터와 최초 데이터를 구별하는 단계를 포함하는 것을 특징으로 하는 방법.
- 비휘발성 메모리 시스템에 있어서,삭제가능한 저장 엘리먼트의 최소 그룹을 포함하는 저장 엘리먼트의 블럭에 구성된 비휘발성 메모리 저장 엘리먼트의 어레이,갱신된 버전의 차후 기록의 지시에 따라 제 2 블럭에 저장된 모든 최초 데이터보다 적은 갱신된 버전을 제 1 블럭에 기록하는 프로그래밍 메카니즘,동일한 어드레스를 갖는 최도 데이터와 갱신된 버전 양측을 논리적으로 어드레스하는 어드레스 메카니즘, 및갱신된 버전의 차후 기록의 지시에 의해 상대적인 시간으로 적어도 부분적으로 최초 데이터와 갱신된 버전을 구별하는 판독 메카니즘을 포함하는 것을 특징으로 하는 비휘발성 메모리 시스템.
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