Niaj hnub no, ntau niaj hnub NAND flash nco cov cuab yeej siv ib hom tshiab ntawm architecture uas lub interface, maub los, thiab nco chips tau muab tso rau hauv ib txheej ntawm cov khoom sib xyaw. Peb hu cov qauv no monolithic.
Txog thaum tsis ntev los no, txhua daim npav nco xws li SD, Sony MemoryStick, MMC thiab lwm tus siv cov qauv "classical" yooj yim nrog cov khoom sib cais - tus tswj, lub rooj tsavxwm thiab NAND nco nti hauv pob TSOP-48 lossis LGA-52. Nyob rau hauv tas li ntawd, cov txheej txheem rov qab yog yooj yim heev - peb desoldered lub cim xeeb nti, nyeem nws nyob rau hauv PC-3000 Flash, thiab ua tib yam kev npaj raws li nyob rau hauv cov ntaub ntawv ntawm ib txwm USB flash drives.
Txawm li cas los xij, yuav ua li cas yog tias peb daim npav nco lossis UFD ntaus ntawv muaj cov qauv monolithic? Yuav ua li cas nkag mus thiab nyeem cov ntaub ntawv los ntawm NAND nco nti?
Nyob rau hauv cov ntaub ntawv no, yooj yim muab tso, peb yuav tsum nrhiav tau ib tug tshwj xeeb technologies tso zis tiv tauj rau hauv qab ntawm peb monolithic ntaus ntawv, tshem tawm nws txheej rau qhov no.
Tab sis ua ntej koj pib rov qab cov ntaub ntawv los ntawm cov khoom siv monolithic, peb yuav tsum ceeb toom koj tias cov txheej txheem ntawm kev siv cov khoom siv monolithic yog qhov nyuaj thiab yuav tsum muaj kev txawj ntse zoo thiab cov cuab yeej tshwj xeeb. Yog tias koj tsis tau sim soldering ib qho khoom siv monolithic ua ntej, peb xav kom koj xyaum ntawm cov khoom pub dawb nrog cov ntaub ntawv tsis tsim nyog. Piv txwv li, koj tuaj yeem yuav ob peb yam khoom siv los xyaum npaj thiab soldering.
Hauv qab no yog ib daim ntawv teev cov khoom siv yuav tsum tau:
- Qhov zoo tshaj plaws optical microscope nrog 2, 4 thiab 8 zaus magnification.
- USB soldering hlau nrog ib tug nyias nyias.
- Muab ob npaug rau daim kab xev.
- Ua kua active flux.
- Gel flux rau pob lead.
- Soldering phom (piv txwv li, Lukey 702).
- Rosin.
- Ntoo toothpicks.
- Cawv (75% isopropyl).
- Copper wires 0,1 hli tuab nrog cov kua roj vanish rwb thaiv tsev.
- Jeweller's sandpaper (1000, 2000 thiab 2500 - tus lej ntau dua, cov nplej me dua).
- Pob 0,3 hli.
- Twerzers
- Ntse scalpel.
- Pinout daim duab.
- Adapter board rau PC-3000 Flash.
Thaum tag nrho cov cuab yeej npaj txhij, cov txheej txheem tuaj yeem pib.
Ua ntej, cia peb coj peb cov khoom siv monolithic. Hauv qhov no nws yog daim npav microSD me me. Peb yuav tsum tau kho nws ntawm lub rooj nrog ob-sided daim kab xev.
Tom qab no, peb yuav pib tshem tawm cov txheej ntawm cov compound los ntawm hauv qab no. Qhov no yuav siv sij hawm me ntsis - koj yuav tsum ua siab ntev thiab ceev faj. Yog tias koj ua puas rau txheej tiv tauj, cov ntaub ntawv tsis tuaj yeem rov qab tau!
Cia peb pib nrog cov ntawv xuab zeb coarsest, nrog cov nplej loj tshaj plaws - 1000 lossis 1200.
Tom qab tshem tawm feem ntau ntawm cov txheej, koj yuav tsum tau hloov mus rau cov ntaub ntawv ntxhib tsawg - 2000.
Thaum kawg, thaum cov txheej tooj tooj ntawm cov neeg sib cuag tshwm sim, koj yuav tsum hloov mus rau cov ntawv xuab zeb zoo tshaj plaws - 2500.
Yog tias txhua yam ua tiav lawm, koj yuav tau txais qee yam zoo li no:
Hloov cov ntawv xuab zeb, koj tuaj yeem siv cov txhuam fiberglass hauv qab no, uas yog qhov zoo tshaj plaws ntxuav cov khaubncaws sab nraud povtseg thiab yas thiab tsis ua rau tooj liab:
Cov kauj ruam tom ntej yog mus nrhiav pinouts ntawm lub vev xaib .
Txhawm rau ua haujlwm txuas ntxiv, peb yuav tsum tau solder 3 pawg neeg sib cuag:
- Cov ntaub ntawv I/O: D0, D1, D2, D3, D4, D5, D6, D7;
- Tswj kev tiv tauj: ALE, RE, R / B, CE, CLE, WE;
- Lub zog pins: VCC, GND.
Ua ntej koj yuav tsum xaiv qeb ntawm cov khoom siv monolithic (hauv peb rooj plaub nws yog microSD), thiab tom qab ntawd xaiv cov pinout sib xws (rau peb nws yog hom 2).
Tom qab ntawd, koj yuav tsum tau ua kom ruaj ntseg daim npav microSD rau lub rooj tsav xwm adapter kom yooj yim soldering.
Nws yog ib lub tswv yim zoo los luam tawm daim duab pinout rau koj cov khoom siv monolithic ua ntej soldering. Koj tuaj yeem muab tso rau ib sab ntawm nws kom nws yooj yim dua rau xa mus yog tias tsim nyog.
Peb npaj txhij pib soldering! Xyuas kom koj lub rooj teeb pom kev zoo.
Siv cov kua flux rau cov microSD tiv tauj siv tus txhuam me me.
Siv tus pas txhuam hniav ntub, tso tag nrho cov pob ua rau ntawm cov tooj liab uas tau cim rau ntawm daim duab. Nws yog qhov zoo tshaj plaws los siv cov pob nrog lub cheeb ntawm 75% ntawm qhov sib cuag loj. Cov kua dej yuav pab peb kho cov pob ntawm qhov chaw ntawm microSD.
Tom qab tso tag nrho cov khoom ntawm cov neeg sib cuag, koj yuav tsum tau siv cov hlau soldering kom yaj lub solder. Ceev faj! Ua txhua yam txheej txheem maj mam! Yuav kom yaj, kov cov khoom nrog lub ntsis ntawm cov hlau soldering rau lub sijhawm luv luv.
Thaum tag nrho cov pob yog yaj, koj yuav tsum tau siv cov gel flux rau cov pob terminals rau cov neeg sib cuag.
Siv lub tshuab ziab plaub hau, koj yuav tsum tau cua sov cov neeg rau qhov kub ntawm +200 Β° C. Lub flux yuav pab faib qhov kub thiab txias ntawm txhua qhov kev sib cuag thiab yaj lawv sib npaug. Tom qab cua sov, tag nrho cov kev sib cuag thiab cov pob yuav coj ib tug hemispherical duab.
Tam sim no koj yuav tsum tshem tawm tag nrho cov kab ntawm flux siv cawv. Koj yuav tsum tau tshuaj tsuag nws ntawm microSD thiab ntxuav nws nrog txhuam.
Tom ntej no peb npaj cov xov hlau. Lawv yuav tsum yog tib qhov ntev, txog 5-7 cm. Koj tuaj yeem ntsuas qhov ntev ntawm cov xov hlau siv ib daim ntawv.
Tom qab ntawd, koj yuav tsum tshem tawm cov kua roj vanish los ntawm cov xov hlau nrog scalpel. Txhawm rau ua qhov no, tsuas yog maj mam txhuam lawv ntawm ob sab.
Cov theem kawg ntawm kev npaj cov xov hlau yog tinning lawv nyob rau hauv rosin kom lawv zoo dua soldered.
Thiab tam sim no peb npaj txhij los solder cov xov hlau rau lub rooj tsavxwm adapter. Peb pom zoo kom pib soldering ntawm lub rooj tsavxwm sab, thiab tom qab ntawd soldering cov xov hlau los ntawm sab nraud mus rau cov khoom siv monolithic nyob rau hauv lub tshuab tsom.
Thaum kawg, tag nrho cov xov hlau tau raug soldered thiab peb npaj siv lub tshuab tsom rau solder cov xov hlau rau microSD. Qhov no yog txoj haujlwm nyuaj tshaj plaws thiab yuav tsum tau ua siab ntev loj. Yog tias koj nkees nkees, so, noj tej yam qab zib thiab haus kas fes (cov piam thaj hauv ntshav yuav tshem tawm tes tshee). Tom qab ntawd, txuas ntxiv soldering.
Rau cov neeg sab xis, peb pom zoo kom tuav cov hlau soldering ntawm koj sab tes xis thiab tuav lub tweezers nrog cov hlau hauv koj sab laug.
Lub soldering hlau yuav tsum huv si! Tsis txhob hnov ββββqab ntxuav nws thaum soldering.
Thaum koj tau soldered tag nrho cov pins, xyuas kom meej tias tsis muaj leej twg kov hauv av! Txhua qhov kev sib cuag yuav tsum tau tuav nruj heev!
Tam sim no koj tuaj yeem txuas peb lub rooj tsav xwm adapter rau PC-3000 Flash thiab pib cov txheej txheem ntawm kev nyeem cov ntaub ntawv.
Video ntawm tag nrho cov txheej txheem:
Nco tseg transl.: Tsis ntev ua ntej txhais cov lus no kuv tuaj hla cov yeeb yaj kiab hauv qab no, cuam tshuam rau lub ntsiab lus:
Tau qhov twg los: www.hab.com