Sobanukirwa itandukaniro riri hagati yamanota atandukanye ya SSD Chips ya NAND Flash SLC, MLC, TLC, QLC

Izina ryuzuye rya NAND Flash ni Flash Memory, ni iyibikoresho byo kwibuka bidahindagurika (Igikoresho cyo kwibuka kidahinduka).Ishingiye ku gishushanyo mbonera cya transistor ireremba, kandi amafaranga yishyirwa mu irembo rireremba.Kubera ko irembo rireremba ryitaruye amashanyarazi, bityo Electron igera kumuryango irafatwa na nyuma ya voltage ikuweho.Ninimpamvu ya flash idahungabana.Amakuru abitswe muri ibyo bikoresho kandi ntazabura nubwo amashanyarazi yazimye.
Ukurikije nanotehnologiya itandukanye, NAND Flash yiboneye kuva muri SLC ijya muri MLC, hanyuma ikajya muri TLC, ikagenda yerekeza kuri QLC.NAND Flash ikoreshwa cyane muri eMMC / eMCP, U disiki, SSD, imodoka, interineti yibintu nizindi nzego bitewe nubushobozi bwayo bwihuse no kwandika byihuse.

SLC (Izina ryuzuye ryicyongereza (Akagari kamwe kamwe - SLC) nububiko bumwe
Ikiranga tekinoroji ya SLC nuko firime ya oxyde iri hagati y irembo rireremba ninkomoko yoroheje.Iyo wanditse amakuru, amafaranga yabitswe arashobora gukurwaho ukoresheje voltage kumashanyarazi yumuryango ureremba hanyuma ukanyura mumasoko., ni ukuvuga, impinduka ebyiri gusa za voltage ya 0 na 1 zishobora kubika amakuru 1 yamakuru, ni ukuvuga 1 bit / selile, irangwa numuvuduko wihuse, ubuzima burebure nibikorwa bikomeye.Ikibi nuko ubushobozi buri hasi kandi ikiguzi ni kinini.

MLC (Icyongereza cyuzuye Izina Multi-Urwego Akagari - MLC) ni ububiko bwinshi
Intel (Intel) yabanje guteza imbere MLC muri Nzeri 1997. Igikorwa cyayo ni ukubika ibice bibiri byamakuru mu Irembo Rireremba (igice aho amafaranga abikwa muri flash memory selile), hanyuma ugakoresha amafaranga yubushobozi butandukanye (Urwego ), Gusoma no kwandika neza ukoresheje voltage igenzura mububiko.
Nukuvuga, 2bit / selile, buri selile yibitseho amakuru ya 2bit, bisaba kugenzura imbaraga za voltage igoye, hariho impinduka enye za 00, 01, 10, 11, umuvuduko murirusange, ubuzima ni impuzandengo, igiciro ni impuzandengo, hafi Inshuro 3000-10000 zo gusiba no kwandika ubuzima.MLC ikora ikoresheje umubare munini wa voltage urwego, buri selile ibika bits ebyiri zamakuru, kandi ubwinshi bwamakuru ni nini cyane, kandi irashobora kubika indangagaciro zirenga 4 icyarimwe.Kubwibyo, ubwubatsi bwa MLC burashobora kugira ubwinshi bwububiko.

TLC (Icyongereza cyuzuye Izina Trinari-Urwego Akagari) nububiko bwibyiciro bitatu
TLC ni 3bit kuri selile.Buri gice cyakagari kibika amakuru 3bit, gishobora kubika 1/2 amakuru arenze MLC.Hariho ubwoko 8 bwa voltage ihinduka kuva 000 kugeza 001, ni ukuvuga 3bit / selile.Hariho kandi abakora Flash yitwa 8LC.Igihe gikenewe cyo kubona igihe kirekire, bityo umuvuduko wo kwimura uratinda.
Ibyiza bya TLC nuko igiciro gihenze, igiciro cyumusaruro kuri megabyte nicyo gito, kandi igiciro kikaba gihenze, ariko ubuzima ni bugufi, gusa 1000-3000 gusiba no kwandika ubuzima, ariko ibice bya TLC byageragejwe cyane SSD irashobora gukoreshwa bisanzwe mumyaka irenga 5.

QLC (Icyongereza cyuzuye izina Quadruple-Urwego Akagari) ibice bine byo kubika
QLC irashobora kandi kwitwa 4bit MLC, igikoresho cyo kubika ibice bine, ni ukuvuga 4bits / selile.Hano hari impinduka 16 muri voltage, ariko ubushobozi burashobora kwiyongeraho 33%, ni ukuvuga, imikorere yo kwandika no gusiba ubuzima bizagabanuka cyane ugereranije na TLC.Mu kizamini cyihariye cyo gukora, Magnesium yakoze ubushakashatsi.Kubijyanye no gusoma byihuta, byombi SATA irashobora kugera kuri 540MB / S.Q. IOPS, igihombo hafi kimwe cya kabiri.

PS. biba bibi, kandi ubuzima bwa serivisi buba bugufi, buriwese afite ibyiza n'ibibi.

(NAND Flash soma kandi wandike ubuzima nibisobanuro gusa)
Ntabwo bigoye kubona ko imikorere yubwoko bune bwa flash ya NAND itandukanye.Igiciro kuri buri gice cyubushobozi bwa SLC kirenze icy'ubundi bwoko bwa NAND flash yibuka, ariko igihe cyo kubika amakuru ni kirekire kandi umuvuduko wo gusoma urihuta;QLC ifite ubushobozi bunini nigiciro gito, ariko bitewe nubwizerwe buke no kuramba Ibitagenda neza nibindi bitagenda neza biracyakenewe gutezwa imbere.

Urebye ibiciro byumusaruro, soma kandi wandike umuvuduko nubuzima bwa serivisi, urutonde rwibyiciro bine ni:
SLC> MLC> TLC> QLC;
Ibisubizo nyamukuru byubu ni MLC na TLC.SLC igamije cyane cyane mubikorwa bya gisirikari nibigo, hamwe no kwandika byihuse, igipimo gito, hamwe nigihe kirekire.MLC igamije cyane cyane ibyiciro byabaguzi, ubushobozi bwayo bukubye inshuro 2 kurenza SLC, bidahenze, bikwiranye na USB flash drives, terefone igendanwa, kamera ya digitale nandi makarita yo kwibuka, kandi ikoreshwa cyane muri SSD yo murwego rwabaguzi muri iki gihe .

NAND flash yibuka irashobora kugabanywamo ibyiciro bibiri: imiterere ya 2D nuburyo bwa 3D ukurikije imiterere itandukanye.Transistors yo kureremba ikoreshwa cyane cyane kuri 2D FLASH, mugihe flash ya 3D ikoresha cyane cyane CT transistors hamwe n irembo rireremba.Ni igice cya kabiri, CT ni insulator, byombi bitandukanye muri kamere nihame.Itandukaniro ni:

2D imiterere NAND Flash
Imiterere ya 2D ya selile yibuka itunganijwe gusa mu ndege ya XY ya chip, bityo rero inzira yonyine yo kugera ku bucucike buri muri wafer imwe ukoresheje tekinoroji ya 2D flash ni ukugabanya inzira.
Ikibi ni uko amakosa muri NAND flash ari menshi kuri node nto;mubyongeyeho, hariho imipaka kuri ntoya ntoya ishobora gukoreshwa, kandi ubwinshi bwububiko ntabwo buri hejuru.

Imiterere ya 3D NAND Flash
Kugirango bongere ubwinshi bwububiko, ababikora bakoze tekinoroji ya 3D NAND cyangwa V-NAND (vertical NAND), ishyira selile yibuka muri Z-indege kuri wafer imwe.

Muri flash ya 3D NAND, selile yibuka ihujwe nkumugozi uhagaritse aho kuba imirongo itambitse muri 2D NAND, kandi kubaka muri ubu buryo bifasha kugera ku bucucike buke kuri kariya gace kamwe.Ibicuruzwa bya mbere bya 3D Flash byari bifite ibice 24.