CN102592676A - Recyclable Nandflash storage system - Google Patents
Recyclable Nandflash storage system Download PDFInfo
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- CN102592676A CN102592676A CN2011100096087A CN201110009608A CN102592676A CN 102592676 A CN102592676 A CN 102592676A CN 2011100096087 A CN2011100096087 A CN 2011100096087A CN 201110009608 A CN201110009608 A CN 201110009608A CN 102592676 A CN102592676 A CN 102592676A
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- nandflash
- piece
- storage system
- returnable
- record sheet
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Abstract
Disclosed is a recyclable Nandflash storage system, which comprises a microcontroller, a system interface controller, a system memory access arbiter logical unit, a system memory, a Nandflash controller and a Nandflash memory array, wherein a Nandflash memory is divided into a block erasing frequency record area and other areas. A block erasing frequency record chart is stored in the block erasing frequency record area of the Nandflash memory, and the erasing frequency of each block of the Nandflash memory is recorded in the record chart. According to the record chart, the service condition of the Nandflash memory is known, so that the Nandflash memory is fully recycled and the service life is prolonged under the conditions that requirements of a Nandflash memory device are satisfied.
Description
Technical field
The present invention relates to a kind of Nandflash storage system, relate in particular to a kind of returnable Nandflash storage system.
Background technology
Nandflash has obtained the development of advancing by leaps and bounds in recent years, to MLC (multiple field storage) technology of 2/unit even 3/unit, the production technology of Nandflash is also constantly progressive simultaneously by SLC (single-layer type storage) technical development of 1/unit.Along with the development of technology, the Nandflash capacity constantly increases, and the cost of unit capacity also significantly reduces, and the field of using Nandflash is also more and more.
What application Nandflash was maximum now is electronic equipment for consumption, and this kind equipment updates very fast.Along with older generation's product is eliminated, the Nandflash in its product is also discarded by thereupon, and these Nandflash often are far from reaching their serviceable life in the product, and this is undoubtedly a kind of huge waste.Exist on the market now discarded Nandflash recovery is used in the way in the new product again; But this way only is to reclaim Nandflash; And detect the Nandflash that reclaims whether there is not enough serviceable life; The guarantee that this causes using the quality of product of the Nandflash of recovery to can not get using, thereby the consumer's of infringement rights and interests.
Based on the problems referred to above, the present invention proposes a kind of new Nandflash storage system with recyclable performance, and the product that adopts this type of storage system is after update, and its storage system still can recycling, and its canned data is easy to read operation.
Summary of the invention
The object of the invention provides a kind of returnable Nandflash storage system; Be made up of microcontroller, system interface controller, system memory accesses arbitration logic unit, system storage, Nandflash controller and Nandflash memory array, wherein the Nandflash storer is divided into the erasable number of times posting field of piece and other zones.
Microcontroller, system master system unit is used to control whole Nandflash accumulator system;
System interface controller carries out data transmission with certain specific protocol and main control end, and agreement comprises SD, XD, IDE, USB, SATA and PCIE etc.;
The system memory accesses arbitration logic unit is used to arbitrate microcontroller, system interface controller and the Nandflash controller access request to system storage;
System storage is used for the data of transmitting between scratch system end and Nandflash controller;
The Nandflash controller, be used to control and the Nandflash array between data transmission;
The Nandflash memory array comprises one or more Nandflash storeies, is used to deposit the out of Memory of user data and system's needs.
The erasable number of times posting field of the piece of Nandflash storer is deposited piece erasing times record sheet, and each piece of record Nandflash is by erasable number of times in the table.When system start-up, the erasable number of times posting field of the piece of piece erasing times record sheet from the Nandflash storer reads in the system storage.System carries out need carrying out erase operation to the piece among the Nandflash when rubbish piece reclaims, and upgrades piece erasing times record sheet behind each erase operation, is wiped free of after being wiped free of number of times and adding 1 of piece write-in block erasing times record sheet again.When system quits work, with piece erasing times record sheet in system storage is written to the erasable number of times posting field of piece the Nandflash storer.
Piece erasing times record sheet forever leaves in the Nandflash storer, when Nandflash is recovered use, can learn the operating position of Nandflash storer according to piece erasing times record sheet.According to the operating position of Nandflash storer, can under the situation that satisfies Nandflash memory device demand, prolong the life cycle of Nandflash storer.
Description of drawings
The returnable Nandflash storage system of Fig. 1 circuit structure diagram
Embodiment
Below in conjunction with accompanying drawing the content that the present invention proposes is carried out detailed explanation.As shown in fig. 1, be the structural drawing between main control end and the returnable Nandflash storage system.
The size of piece erasing times record sheet is fixed, and each piece of Nandflash storer all has corresponding one.It thes contents are as follows shown in the table: (N is the sum of piece in the Nandflash storer)
| List item | Content |
| 0 | The erasable number of times of piece 0 |
| 1 | The erasable number of times of piece 1 |
| … | … |
| N | The erasable number of times of piece N |
Table 1 an erasing times record sheet content
Each item size is unit with the byte, confirms according to the maximum erasable number of times of Nandflash storer support.
Piece erasing times posting field is the private space in the Nandflash storer, only is used for depositing piece erasing times record sheet, supposes that piece erasing times record sheet accounts for the M piece, and then the size of piece erasing times posting field is 2 * M.Wherein the M piece is used for depositing the erasing times record sheet, and the M piece is done subsequent use in addition.
When system start-up, piece erasing times record sheet is read system storage from the Nandflash storer.When system quits work, piece erasing times record sheet is write Nandflash memory ready zone, wipe former storage area simultaneously.
During system start-up, need the deposit position of decision block erasing times record sheet.Respectively read one page from two parts of piece erasing times posting field, data are that the zone at 1 page or leaf place is a spare area entirely, and second half then is piece erasing times record sheet region.
Nandflash is recovered when using, and learns the operating position of Nandflash storer according to piece erasing times record sheet.According to the operating position of Nandflash storer, can under the situation that satisfies Nandflash memory device demand, fully reclaim and use the Nandflash storer, prolong its serviceable life, thereby reduce the cost of Nandflash storage system.
Claims (7)
1. returnable Nandflash storage system; Constitute by microcontroller, system interface controller, system memory accesses arbitration logic unit, system storage, Nandflash controller and Nandflash memory array, it is characterized in that the Nandflash storer comprises the erasable number of times posting field of piece and other zones.
2. a kind of returnable Nandflash storage system as claimed in claim 1 is characterized in that forever depositing in the said Nandflash storer piece erasing times record sheet.
3. a kind of returnable Nandflash storage system as claimed in claim 1 is characterized in that the erasable number of times posting field of piece of said Nandflash storer is deposited piece erasing times record sheet, and other zones are subsequent use.
4. a kind of returnable Nandflash storage system as claimed in claim 1, when it is characterized in that system start-up, the erasable number of times posting field of the piece of piece erasing times record sheet from the Nandflash storer reads system storage.
5. a kind of returnable Nandflash storage system as claimed in claim 1; It is characterized in that system carries out the rubbish piece and the piece in the Nandflash storer carried out erase operation when reclaiming; Upgrade piece erasing times record sheet behind each erase operation, be wiped free of after being wiped free of number of times and adding 1 of piece write-in block erasing times record sheet again.
6. a kind of returnable Nandflash storage system as claimed in claim 1 is characterized in that piece erasing times record sheet was written to the erasable number of times posting field of piece the Nandflash storer from system storage when system quit work.
7. a kind of returnable Nandflash storage system as claimed in claim 1 is characterized in that said Nandflash storage system and main control end communication interface are SD, XD, SATA, USB, PCIE or PATA interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100096087A CN102592676A (en) | 2011-01-17 | 2011-01-17 | Recyclable Nandflash storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100096087A CN102592676A (en) | 2011-01-17 | 2011-01-17 | Recyclable Nandflash storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102592676A true CN102592676A (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100096087A Pending CN102592676A (en) | 2011-01-17 | 2011-01-17 | Recyclable Nandflash storage system |
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| Country | Link |
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| CN (1) | CN102592676A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464809A (en) * | 2014-11-05 | 2015-03-25 | 武汉新芯集成电路制造有限公司 | Method for prolonging service life of flash memory |
| CN106779008A (en) * | 2015-11-23 | 2017-05-31 | 杭州海康威视数字技术股份有限公司 | SD card, video camera and SD card reliability early warning system |
| CN108108121A (en) * | 2016-11-25 | 2018-06-01 | 三星电子株式会社 | Memory Controller and the method for controlling its operation |
| CN109147853A (en) * | 2017-06-27 | 2019-01-04 | 爱思开海力士有限公司 | Controller and its operating method |
| CN111309642A (en) * | 2020-02-12 | 2020-06-19 | 合肥康芯威存储技术有限公司 | Memory, control method thereof and memory system |
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| US20060149896A1 (en) * | 2002-10-28 | 2006-07-06 | Sandisk Corporation | Maintaining an average erase count in a non-volatile storage system |
| CN101231617A (en) * | 2008-01-21 | 2008-07-30 | 中兴通讯股份有限公司 | Method for processing data of flash memory equipment |
| CN101354635A (en) * | 2007-07-24 | 2009-01-28 | 株式会社东芝 | Information recording device and control method therefor |
| CN101414282A (en) * | 2007-10-15 | 2009-04-22 | 群联电子股份有限公司 | Average abrasion method and controller using the same |
| US20100125696A1 (en) * | 2008-11-17 | 2010-05-20 | Prasanth Kumar | Memory Controller For Controlling The Wear In A Non-volatile Memory Device And A Method Of Operation Therefor |
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- 2011-01-17 CN CN2011100096087A patent/CN102592676A/en active Pending
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| US20060149896A1 (en) * | 2002-10-28 | 2006-07-06 | Sandisk Corporation | Maintaining an average erase count in a non-volatile storage system |
| CN101354635A (en) * | 2007-07-24 | 2009-01-28 | 株式会社东芝 | Information recording device and control method therefor |
| CN101414282A (en) * | 2007-10-15 | 2009-04-22 | 群联电子股份有限公司 | Average abrasion method and controller using the same |
| CN101231617A (en) * | 2008-01-21 | 2008-07-30 | 中兴通讯股份有限公司 | Method for processing data of flash memory equipment |
| US20100125696A1 (en) * | 2008-11-17 | 2010-05-20 | Prasanth Kumar | Memory Controller For Controlling The Wear In A Non-volatile Memory Device And A Method Of Operation Therefor |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464809A (en) * | 2014-11-05 | 2015-03-25 | 武汉新芯集成电路制造有限公司 | Method for prolonging service life of flash memory |
| CN106779008A (en) * | 2015-11-23 | 2017-05-31 | 杭州海康威视数字技术股份有限公司 | SD card, video camera and SD card reliability early warning system |
| WO2017088399A1 (en) * | 2015-11-23 | 2017-06-01 | 杭州海康威视数字技术股份有限公司 | Sd card, camera and sd card reliability warning system |
| CN108108121A (en) * | 2016-11-25 | 2018-06-01 | 三星电子株式会社 | Memory Controller and the method for controlling its operation |
| CN108108121B (en) * | 2016-11-25 | 2022-02-25 | 三星电子株式会社 | Memory controller and method of controlling operation thereof |
| CN109147853A (en) * | 2017-06-27 | 2019-01-04 | 爱思开海力士有限公司 | Controller and its operating method |
| CN111309642A (en) * | 2020-02-12 | 2020-06-19 | 合肥康芯威存储技术有限公司 | Memory, control method thereof and memory system |
| CN111309642B (en) * | 2020-02-12 | 2023-08-08 | 合肥康芯威存储技术有限公司 | Memory, control method thereof and memory system |
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Application publication date: 20120718 |