CN109857330A - The predictor method of data access efficiency - Google Patents
The predictor method of data access efficiency Download PDFInfo
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- CN109857330A CN109857330A CN201711235289.5A CN201711235289A CN109857330A CN 109857330 A CN109857330 A CN 109857330A CN 201711235289 A CN201711235289 A CN 201711235289A CN 109857330 A CN109857330 A CN 109857330A
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Abstract
The present invention provides a kind of predictor method of data access efficiency, it is applied in a computer system, computer system includes a host and a flash memory device with a controller and plurality of blocks, when host transmits write efficiency inquiry instruction to flash memory device, if controller judges that the data space of idle block can accommodate data volume to be written, a best write efficiency is replied to host, if controller judges that the data space of idle block can not accommodate data volume to be written, select one garbage reclamation program of an at least onblock executing, the weight proportion that the valid data of block selected account for after the aggregations of data to be written and valid data is calculated to produce write efficiency that one estimates and to be replied host, and the onblock executing garbage reclamation program for selecting is to become new idle block.
Description
Technical field
A kind of predictor method of the present invention about data access efficiency, espespecially a kind of data access for estimating flash memory device
The method of efficiency.
Background technique
With the evolution of semiconductor technology, flash memory device, such as the appearance of solid state hard disk (SSD, Solid State Disk)
Measure increasing, flash memory device is gradually by servo host or recording apparatus as main data storage medium.
Since servo host or recording apparatus often need to carry out the write-in or reading of larger data amount, flash memory device
Access efficiency quality, servo host or recording apparatus will be directly influenced for the access speed of data.Previous servo master
Machine usually utilizes test of the test software for flash memory device execution access efficiency.When servo host using test software for
When flash memory device executes the test of access efficiency, it will transmit some test datas to flash memory via a data transmission interface and fill
It sets, and using the read or write speed of these test data test flash memory devices, to estimate out the access efficiency of flash memory device.But
It is that servo host estimates the access efficiency of flash memory device using test software, is easy to procrastinate because of the transmission of test data, transmits and do
Disturb or some external emergency situations and influence the result for estimating access efficiency.
Summary of the invention
In view of this, the present invention will provide a kind of method of the data access efficiency for estimating flash memory device of innovation, deposit
It takes estimating for efficiency that will voluntarily be executed by flash memory device, influences flash memory device access efficiency to avoid external emergency situations
Estimate, it will be the purpose of the present invention.
A purpose of the invention is to propose a kind of predictor method of data access efficiency, and method is applied to be calculated one
In machine system, computer system includes a host and a flash memory device, when host is intended to execute a write efficiency for flash memory device
When estimating, to flash memory device, flash memory device enters after receiving write efficiency inquiry instruction for transmission one write efficiency inquiry instruction
The estimator of one write efficiency, when executing the estimator of write efficiency, if flash memory device judges internal free area
The data space of block can accommodate data volume to be written, and reply a best write efficiency to host, if in flash memory device judges
When the data space of the idle block in portion can not accommodate data volume to be written, one garbage reclamation journey of an at least onblock executing is selected
Sequence, and calculate valid data amount in the block selected and account for the weight proportion that data volume to be written is added up with valid data amount to convert
A write efficiency estimated out, and include that the reply signal of the write efficiency estimated is sent to host by one.
A further object of the present invention is to propose a kind of predictor method of data access efficiency, flash memory device record one
Number of retries is read in average displacement and number of retries is opposite to set multiple door sections, each door area according to reading in displacement
Between respectively correspond a reading efficiency estimated, when host be intended to for flash memory device execute when estimating of a reading efficiency, transmission
To flash memory device, flash memory device enters the pre- of a reading efficiency after receiving reading efficiency inquiry instruction for one reading efficiency inquiry instruction
Program is estimated, when executing the estimator of reading efficiency, where flash memory device judges that number of retries is read in displacement average at present
Door section to inquire reading efficiency that corresponding one estimates and pass a reply signal comprising the reading efficiency estimated
It send to host.
To reach above-mentioned purpose, the present invention provides a kind of predictor method of data access efficiency, applies in a computer
In system, computer system includes a host and a flash memory device, and flash memory device includes a controller and an at least flash memory module,
Memory modules include plurality of blocks, and there are the idle block that at least one does not store data, predictor method steps in those blocks
It suddenly include: that enable host transmission one include the write efficiency inquiry instruction of a data volume to be written to flash memory device；And enable flash memory
The controller of device receives the estimator that a write efficiency is executed after write efficiency inquiry instructs, the estimator of write efficiency
The step of include: to judge whether the data space of idle block is large enough to hold data volume to be written, if judging idle block
When data space is large enough to hold data volume to be written, transmission one includes the reply message of a best write efficiency to host, instead
If it executes a garbage reclamation program judge that the data space of idle block not enough accommodates data volume to be written；Execute rubbish
Rubbish reclaimer step includes: to store to select an at least block in the block of data as being intended to execute a garbage reclamation from those
The block of program；Judge the valid data amount in the block selected；The valid data amount in block that calculating is selected, which accounts for, to be intended to write
Enter the weight proportion that data volume is added up with valid data amount and best write efficiency is subtracted into weight proportion and is estimated in the hope of one
Write efficiency；Transmission one includes the reply message for the write efficiency estimated to host；And the onblock executing rubbish for selecting
Rubbish reclaimer is moving valid data all in the block selected into other blocks and in the block selected of erasing
All data so that the block selected becomes new idle block.
In one embodiment of the invention, it is one with most that wherein controller, which picks out the block of garbage reclamation program to be executed,
The block of rare effect data volume.
In one embodiment of the invention, still include the following steps: the reply message for enabling host receive best write efficiency or pre-
It is sequentially write data into after the reply message for the write efficiency estimated into the idle block of flash memory device.
In one embodiment of the invention, still include the following steps: to judge whether after enabling controller execute garbage reclamation program
Write efficiency next time, which is received, from host inquires instruction；And controller is enabled to ask via the write efficiency that host receives next time
Ask the estimator for executing write efficiency after instructing once again.
In one embodiment of the invention, wherein each block includes a plurality of pages, controller records one of each page
It moves to read number of retries and record an average displacement and reads number of retries, it is all pages that number of retries is read in average displacement
Displacement read the aggregation of number of retries except in the total quantity of the page.
In one embodiment of the invention, wherein controller is set with multiple doors that reading times are retried about average displacement
Section, each door section respectively correspond a reading efficiency estimated.
In one embodiment of the invention, predictor method still includes the following steps: that host is enabled to transmit reading efficiency inquiry instruction
To flash memory device；And after enabling the controller of flash memory device receive reading efficiency inquiry instruction execute a reading efficiency estimates journey
The step of sequence, the estimator of reading efficiency includes: the door section where judging average displacement reading number of retries to look into
Ask out the corresponding reading efficiency estimated；And transmission one includes the reply message for the reading efficiency estimated to host.
In one embodiment of the invention, sentence after still including the following steps: the estimator for enabling controller execute reading efficiency
Disconnected whether inquire from the reading efficiency of host reception next time instructs；And controller is enabled to receive reading efficiency inquiry next time
Ask the estimator for executing reading efficiency after instructing once again.
The present invention provides a kind of predictor method of data access efficiency again, applies in a computer system, computer
System includes a host and a flash memory device, and flash memory device includes a controller and at least a flash memory module, memory modules include
Plurality of blocks, block include a plurality of pages, and predictor method step includes: that a displacement of controller record each page is enabled to read
It takes number of retries and records an average displacement reading number of retries of flash memory device, wherein number of retries is read in average displacement
The aggregation of number of retries is read except in the total quantity of the page for the displacement of all pages；Controller is enabled to retry according in displacement reading
Number is opposite to set multiple door sections, wherein each door section respectively corresponds a reading efficiency estimated；Host is enabled to pass
Send reading efficiency inquiry instruction to flash memory device；And it is executed after enabling the controller of flash memory device receive write efficiency inquiry instruction
The step of estimator of one reading efficiency, the estimator of reading efficiency includes: to judge that number of retries is read in average displacement
The door section at place is to inquire the corresponding reading efficiency estimated；And transmission one includes the reply for the reading efficiency estimated
Message is to host.
The invention has the advantages that
The predictor method of data access efficiency of the invention is voluntarily executed by flash memory device, can avoid external burst shape
Condition influences estimating for flash memory device access efficiency, improves data access efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of computer system of the present invention.
Fig. 2 is the data structure schematic diagram of the flash memory module of flash memory device of the present invention.
Fig. 3 is the flow chart that computer system of the present invention estimates a data access efficiency.
Fig. 4 is the flow chart that computer system of the present invention estimates a write efficiency.
Fig. 5 is the flow chart that computer system of the present invention estimates a reading efficiency.
Primary clustering symbol description:
100 computer system, 10 host
101 write efficiencies inquiry 102 data volumes to be written of instruction
103 reading efficiencies inquiry 30 flash memory devices of instruction
31 controller, 311 firmware
3111 displacements read the average displacement of number of retries 3113 and read number of retries
3115 door section, 313 scratch list
321 reply the best write efficiency of message 322
The write efficiency that 323 reply messages 324 are estimated
The reading efficiency that 325 reply messages 326 are estimated
33 flash memory module, 351 block
352 block, 353 block
354 block, 359 block
361 pages
Specific embodiment
Please refer to Fig. 1 and Fig. 2, the sudden strain of a muscle of the structural schematic diagram and flash memory device of the present invention of computer system respectively of the present invention
The data structure schematic diagram of storing module.As shown in Figures 1 and 2, computer system 100 of the present invention includes a host 10 and a flash memory
Device 30, host 10 will be data access efficiency (such as write efficiency or reading efficiency) for flash memory device 30 execute and estimate
Program.Flash memory device 30 includes a controller 31 and an at least flash memory module 33.Flash memory module 33 includes plurality of blocks
(Block)351,352,353,354,359.Each block 351,352,353,354,359 is by a plurality of pages (Page) 361
It is formed.The size of each page 361 also can be 4k, 8k, 16k or 32k.Furthermore these blocks 351,352,353,354,
There are the idle blocks that at least one does not store any data, such as block 351,352 in 359.In addition, controller of the present invention
31 include a firmware 311 and a scratch list 313.Estimator of the controller 31 using 311 operation data access efficiency of firmware, benefit
Recording the data stored by each page 361 with scratch list 313 is a valid data or an invalid data.
Fig. 3 and Fig. 4 is please referred to, the flow chart and meter of the present invention of a data access efficiency are estimated for computer system of the present invention
Calculation machine system estimates the flow chart of a write efficiency, and simultaneously refering to fig. 1 and Fig. 2.Firstly, step S510, host 10 be intended to for
Flash memory device 30 executes when estimating of a write efficiency, it will transmission one write efficiency inquiry instruction 101 to flash memory device 30, this
Write efficiency inquiry instruction 101 includes the message that a host 10 is intended to the data volume 102 that flash memory device 30 is written.Flash memory dress
After setting 30 reception write efficiencies inquiry instruction 101, into the estimator S52 of a write efficiency.
In the estimator S52 of write efficiency, step S521, controller 31 will judge free area block 351,352
Whether data space is large enough to hold the data volume 102 to be written of host 10.Step S522, if controller 31 judges the current free time
The data space of block 351,352 is sufficient to accommodate the data volume 102 to be written of host 10, it will transmission one includes one best
The reply message 321 of write efficiency (A1) 322 is to host 10.In the present invention, best write efficiency (A1) 322 is a percentage
Numerical value, be set as 100%.When host 10 receives the reply message 321 of best write efficiency (such as A1=100%) 322
When, it should also be appreciated that the data space of free time block 351,352 is sufficient to accommodate the data volume 102 to be written of host 10 and energy at present
It is enough to be write data into most fast writing rate (such as maximum writing rate of flash memory device 30) into idle block 351,352.
Such as: the data space of each block 351,352,353,354,359 of flash memory module 33 is respectively 1GB.Work as master
When machine 10 notifies the data volume 102 of the 1GB to be written of flash memory device 30, controller 31 judges that current free data space is 2GB
(such as idle block 351,352) it is sufficient to accommodate the 1GB data volume 102 to be written of host 10, and replys 100% write-in effect
Rate to host 10 so that host 10 learn the data system of this 1GB can be written with most fast writing rate to idle block 351 or
In 352.
Conversely, if controller 31 judges that the data space of idle block 351,352 at present can not accommodate host 10 and be intended to write
The data volume 102 entered a, it will garbage reclamation is executed for one or more blocks 353,354,359 for storing data
(Garbage Collection) program S53, to clear out the block space of part.Such as: when host 10 notifies flash memory device 30
When the data volume 102 of 3GB to be written, controller 31 will judge at present idle block be only 2GB (as idle block 351,
352) data space for, still lacking the idle block of 1GB, at this point, controller 31 will be for an at least block 353,354 and/or 359
Garbage reclamation program is executed, to clear out the block space of 1GB or more.Furthermore during executing garbage reclamation, flash memory device 30 is
It needs to carry out moving for valid data for the block of garbage reclamation to be executed, will affect host 10 for flash memory device 30
The speed of write-in, in this, flash memory device 30 of the present invention calculates the write-in part impacted for moving for valid data
Come, and best write efficiency (A1) 322 is deducted into this impacted write-in part, is returned to estimate out flash memory device 30 in rubbish
Actual write efficiency during receipts.
In garbage reclamation program S53, step S531, the firmware 311 of controller 31 stores the block of data from those
353, an at least block (such as: block 353) is selected in 354,359 as being intended to execute the block of a garbage reclamation program.At this
It invents in a preferred embodiment, the block that the firmware 311 of controller 31 will preferentially select minimum effectively data volume, which is used as, to be intended to hold
The block of one garbage reclamation program of row.Such as: the valid data amount of block 353 is 200MB, and the valid data amount of block 354 is
The valid data amount of 300MB, block 359 are 500MB, and controller 31 preferentially selects least 353 conduct of block of valid data amount
Execute the block of garbage reclamation program.It connects, step S532, controller 31 judges the significant figure in selected block 353
According to amount, such as 200MB.Step S533, the valid data amount that controller 31 calculates in the block 353 selected account for data volume to be written with
The weight proportion of valid data amount aggregation, such as:
Wherein, X is the valid data amount in block 353, and Y is data volume to be written, and Z is weight proportion, later, will be best
Write efficiency (A1) 322 subtracts weight proportion (Z) to obtain current flash memory device 30 running one estimating during the recycling of rubbish rubbish
Write efficiency (A2) 324, such as A2=A1-Z=100%-6.25%=93.75%.In the write efficiency (A2) that acquisition is estimated
After 324, step S534, the transmission of controller 31 one includes the reply message for the write efficiency (such as A2=93.75%) 324 estimated
323 to host 10, host 10 it can be learnt that at present flash memory device 30 running during garbage reclamation when write efficiency.Step
S535, after sending out reply message 323, controller 31 moves valid data all in selected block 353 to others
All data (such as valid data and invalid data) in block 359, and in the block 353 selected of erasing are so that the block selected
353 become new idle block.In addition, controller 31 is while executing garbage reclamation program for the block 353 selected, it is main
Machine 10 can be write data into the speed for the write efficiency (A2) estimated into idle block 351,352 or 353.Work as controller
After 31 have executed garbage reclamation program, returns to the write efficiency inquiry that step S510 judges whether to receive from host next time and refer to
101 are enabled, if so, executing the estimator S52 of the write efficiency of flash memory device 30 once again.
Referring to Fig. 5, computer system of the present invention estimates the flow chart of a reading efficiency, and simultaneously refering to fig. 1 and Fig. 3.
In general, the flash memory module 33 of flash memory device 30 can cause the threshold voltage of data point with the time used gradually aging
Also there may be offsets, so that needing to execute the page 361 of flash memory module 33 multiple displacement reading retries (shift
Read retry) it could really read out data.For this purpose, the firmware 311 of controller 31 will will record each of flash memory module 33
Number of retries 3111 is read in the displacement of the page 361, and controller 31 calculates adding for the displacement reading number of retries of all pages 361
Total total quantity except in all pages 361 reads number of retries 3113 with obtain current flash memory device 30 one average displacement.
Furthermore according to reading in average displacement, number of retries 3113 is opposite to set multiple door sections to the firmware 311 of controller 31
3115, each door section 3115 respectively corresponds a reading efficiency (B1) 326 estimated.Number of retries is read in average displacement
More than 3113, the corresponding reading efficiency (B1) 326 estimated will be lower.Such as: the first door section is 0~1 time flat
Number of retries is read in displacement, and corresponding to the reading efficiency (B1) 326 estimated is 100%；Second door section is 1~2 time
Average displacement reads number of retries, and corresponding to the reading efficiency (B1) 326 estimated is 90%；Third door section is 2~3 times
Average displacement reads number of retries, and corresponding to the reading efficiency (B1) 326 estimated is 80%；4th door section is 3~4 times
Average displacement reads number of retries, and corresponding to the reading efficiency (B1) 326 estimated is 70%；Alternatively, the n-th door section is 5 times
Above average displacement reads number of retries, corresponds to the reading efficiency (B1) 326 estimated lower than 50% etc..
Step S510, host 10 are intended to execute a write efficiency or when estimating of a reading efficiency for flash memory device 30, will
Write efficiency inquiry instruction 101 or reading efficiency inquiry instruction 103 can be transmitted to flash memory device 30.It connects, step S511,
When the controller 31 of flash memory device 30 receives an inquiry instruction about data access efficiency from host 10, it will judgement is ask
Ask whether instruction is write efficiency inquiry instruction 101.When controller 31 judges received inquiry instruction for a write-in
When efficiency inquiry instruction 101, the estimator S52 of write efficiency will be entered；Otherwise, into the estimator S54 of reading efficiency.
In the estimator S54 of reading efficiency, step S541, controller 31 is obtained from firmware 311 and is recorded at present
The average displacement of flash memory module 33 read number of retries 3113.Step S542, controller 31 judge that average displacement is read
Door section 3115 where number of retries 3113 is to inquire the corresponding reading efficiency (B1) 326 estimated.Then, step
S543, the transmission of controller 31 one includes the reply message 325 for the reading efficiency (B1) 326 estimated to host 10, so that host
10 can learn the reading efficiency of current flash memory device 30 and be read from flash memory module 33 with the reading efficiency (B1) 326 estimated
Data, and host 10 is the consume that flash memory module 33 can be learnt according to the reading efficiency (B1) 326 estimated.When controller 31
After executing the step S543, returns to the reading efficiency that step S510 and S511 judge whether to receive from host 10 next time and inquire
Instruction 103, if so, executing the estimator S54 of the reading efficiency of flash memory device 30 once again.
In summary, computer system 100 of the present invention provides the mechanism for the data access efficiency that one estimates flash memory device 30,
Its write efficiency or estimating for reading efficiency will voluntarily be executed by flash memory device 30, to obtain more accurately write efficiency or a reading
The estimation results of efficiency are taken, and the estimation results of write efficiency or reading efficiency will be returned to host 10, so that host 10 is learnt
The writable status of flash memory device 30 at present.
As described above, a preferred embodiment only of the invention is not used to limit the scope of implementation of the present invention,
I.e. all equivalent changes and modifications carried out by according to shape, construction described in the claims in the present invention, feature and spirit, should be included in
In claim of the invention.
Claims (10)
1. the predictor method of data access efficiency, which is characterized in that the predictor method of the data access efficiency is applied in a meter
In calculation machine system, the computer system includes a host and a flash memory device, and the flash memory device is including a controller and extremely
A few flash memory module, the memory modules include plurality of blocks, and there are at least one in the block not to store data
Idle block, the predictor method step include:
Enabling the host transmission one includes that the write efficiency inquiry of a data volume to be written is instructed to the flash memory device；And
Estimating for a write efficiency is executed after enabling the controller of the flash memory device receive the inquiry instruction of said write efficiency
The step of program, the estimator of said write efficiency includes:
Judge whether the data space of the idle block is large enough to hold the data volume to be written, if judging the free area
When the data space of block is large enough to hold the data volume to be written, transmission one include the reply message of a best write efficiency extremely
The host, conversely, if executing one when judging that the data space of the idle block not enough accommodates the data volume to be written
Garbage reclamation program；
Executing the garbage reclamation program step includes:
An at least block is selected from the block for store data as being intended to execute the block of a garbage reclamation program；
Judge the valid data amount in the block selected；
It calculates the valid data amount in the block selected and accounts for the data volume to be written and valid data amount aggregation
One weight proportion, and the best write efficiency is subtracted into the write efficiency that the weight proportion is estimated in the hope of one；
Transmission one includes the reply message of the write efficiency estimated to the host；And
For garbage reclamation program described in the onblock executing selected with by the block selected it is all it is described effectively
All data of the data-moving into other blocks and in the block selected of erasing are so that the block selected becomes
The new idle block.
2. the predictor method of data access efficiency according to claim 1, which is characterized in that the controller picks out institute
Stating and being intended to execute the block of the garbage reclamation program is a block with the minimum valid data amount.
3. the predictor method of data access efficiency according to claim 1, which is characterized in that further include the following steps:
After enabling the host receive the reply message of the best write efficiency or the reply message of the write efficiency estimated
It sequentially writes data into the idle block of the flash memory device.
4. the predictor method of data access efficiency according to claim 1, which is characterized in that further include the following steps:
Judge whether after enabling the controller execute the garbage reclamation program from the host receive next time described in write
Enter efficiency inquiry instruction；And
Enable the controller via the host receive next time said write efficiency inquiry instruction after once again execute described in
The estimator of write efficiency.
5. the predictor method of data access efficiency according to claim 1, which is characterized in that each block includes multiple
Several pages, the displacement that the controller records each page read number of retries and record an average displacement and read
The aggregation that number of retries is read in the displacement that number of retries is all pages is read in number of retries, the average displacement
Except in the total quantity of the page.
6. the predictor method of data access efficiency according to claim 5, which is characterized in that the controller is set with more
A door section that reading times are retried about the average displacement, each door section respectively corresponds a reading estimated
Efficiency.
7. the predictor method of data access efficiency according to claim 6, which is characterized in that the predictor method further includes
The following steps:
The host is enabled to transmit reading efficiency inquiry instruction to the flash memory device；And
Estimating for a reading efficiency is executed after enabling the controller of the flash memory device receive the reading efficiency inquiry instruction
The step of program, the estimator of the reading efficiency includes:
The door section where number of retries is read in the average displacement is judged to inquire corresponding described estimate
Reading efficiency；And
Transmission one includes the reply message of the reading efficiency estimated to the host.
8. the predictor method of data access efficiency according to claim 7, which is characterized in that further include the following steps:
Judge whether to receive next time from the host after enabling the controller execute the estimator of the reading efficiency
The reading efficiency inquiry instruction；And
The controller is enabled to execute the reading efficiency once again after receiving reading efficiency inquiry instruction next time
Estimator.
9. the predictor method of data access efficiency, which is characterized in that the predictor method of the data access efficiency is applied in a meter
In calculation machine system, the computer system includes a host and a flash memory device, and the flash memory device is including a controller and extremely
A few flash memory module, the memory modules include plurality of blocks, and the block includes a plurality of pages, the predictor method step
Suddenly include:
The displacement for enabling the controller record each page reads number of retries and records the one flat of the flash memory device
Number of retries is read in equal displacement, is read wherein the displacement that number of retries is all pages is read in the average displacement
Take the aggregation of number of retries except in the total quantity of the page；
The controller is enabled to read the opposite multiple door sections of setting of number of retries according in the displacement, wherein each door
Bank section respectively corresponds a reading efficiency estimated；
The host is enabled to transmit reading efficiency inquiry instruction to the flash memory device；And
Estimating for a reading efficiency is executed after enabling the controller of the flash memory device receive the inquiry instruction of said write efficiency
The step of program, the estimator of the reading efficiency includes:
The door section where number of retries is read in the average displacement is judged to inquire corresponding described estimate
Reading efficiency；And
Transmission one includes the reply message of the reading efficiency estimated to the host.
10. the predictor method of data access efficiency according to claim 9, which is characterized in that further include the following steps:
Judge whether to receive next time from the host after enabling the controller execute the estimator of the reading efficiency
The reading efficiency inquiry instruction；And
The controller is enabled to execute the reading efficiency once again after receiving reading efficiency inquiry instruction next time
Estimator.
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| TWI716234B (en) * | 2019-12-24 | 2021-01-11 | 睿寬智能科技有限公司 | Static loss averaging method |
| CN117435517A (en) * | 2023-12-19 | 2024-01-23 | 合肥康芯威存储技术有限公司 | Memory device and data processing method thereof |
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| TWI716234B (en) * | 2019-12-24 | 2021-01-11 | 睿寬智能科技有限公司 | Static loss averaging method |
| CN117435517A (en) * | 2023-12-19 | 2024-01-23 | 合肥康芯威存储技术有限公司 | Memory device and data processing method thereof |
| CN117435517B (en) * | 2023-12-19 | 2024-04-05 | 合肥康芯威存储技术有限公司 | Memory device and data processing method thereof |
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