Masiku ano, zida zambiri zamakono za NAND flash zimagwiritsa ntchito mtundu watsopano wa zomangamanga momwe mawonekedwe, owongolera, ndi ma memory chips amaphatikizidwa mugawo limodzi lofanana. Timatcha kamangidwe kameneka kukhala monolithic.
Mpaka posachedwapa, makadi onse okumbukira monga SD, Sony MemoryStick, MMC ndi ena amagwiritsa ntchito dongosolo losavuta la "classic" lomwe lili ndi zigawo zosiyana - chowongolera, bolodi ndi chikumbutso cha NAND mu phukusi la TSOP-48 kapena LGA-52. Zikatero, kuchira kunali kosavuta kwambiri - tidatsitsa memory chip, ndikuiwerenga mu PC-3000 Flash, ndipo tidakonzekera chimodzimodzi monga momwe zimakhalira ndi ma drive wamba a USB.
Komabe, bwanji ngati memori khadi kapena UFD chipangizo ali monolithic dongosolo? Momwe mungapezere chip memory cha NAND ndikuwerenga deta kuchokera pamenepo?
Pankhaniyi, kunena mophweka, tiyenera kupeza wapadera linanena bungwe laumisiri kukhudzana pansi pa chipangizo chathu monolithic pochotsa zokutira kwa izi.
Koma musanayambe kuchira kwa deta kuchokera ku chipangizo cha monolithic, tiyenera kukuchenjezani kuti njira yogulitsira chipangizo cha monolithic ndi yovuta ndipo imafuna luso labwino la soldering ndi zipangizo zapadera. Ngati simunayesepo kugulitsa chipangizo cha monolithic m'mbuyomu, tikukulimbikitsani kuti muyesere pazida zoperekedwa ndi data yosafunikira. Mwachitsanzo, mutha kugula zida zingapo kuti muyesere kukonzekera kwanu ndi kugulitsa.
Pansipa pali mndandanda wa zida zofunika:
- Ma microscope apamwamba kwambiri okhala ndi kukula kwa 2, 4 ndi 8 nthawi.
- USB soldering iron yokhala ndi nsonga yopyapyala kwambiri.
- Tepi yokhala mbali ziwiri.
- Kuthamanga kwamadzimadzi.
- Gel flux kwa otsogolera mpira.
- Soldering mfuti (mwachitsanzo, Lukay 702).
- Rosin.
- Zotolera mano zamatabwa.
- Mowa (75% isopropyl).
- Mawaya amkuwa 0,1 mm wandiweyani wokhala ndi kutchinjiriza kwa lacquer.
- Zodzikongoletsera sandpaper (1000, 2000 ndi 2500 - chiwerengero chapamwamba, chochepa kwambiri cha tirigu).
- Mpira umatsogolera 0,3 mm.
- Zikwangwani
- scalpel yakuthwa.
- Pulogalamu ya pinout.
- Adapter board ya PC-3000 Flash.
Pamene zipangizo zonse zakonzeka, mukhoza kuyamba ndondomekoyi.
Tiyeni titenge chipangizo chathu cha monolithic choyamba. Pankhaniyi, ndi microSD khadi yaing'ono. Tiyenera kukonza patebulo ndi tepi ya mbali ziwiri.
Pambuyo pake, tidzayamba kuchotsa wosanjikiza wapawiri kuchokera pansi. Izi zitenga nthawi - muyenera kukhala oleza mtima komanso osamala. Ngati inu kuwononga kulankhula wosanjikiza, deta sangathe anachira!
Tiyeni tiyambe ndi sandpaper yowongoka kwambiri, yokhala ndi grit yayikulu kwambiri - 1000 kapena 1200.
Mukachotsa zokutira zambiri, muyenera kusinthana ndi sandpaper yaying'ono - 2000.
Pomaliza, pamene mkuwa wosanjikiza wa ojambula akuwonekera, muyenera kusinthana ndi sandpaper yabwino kwambiri - 2500.
Ngati zonse zachitika molondola, mudzapeza zotsatirazi:
M'malo mwa sandpaper, mutha kugwiritsa ntchito burashi ya fiberglass iyi, yomwe imatsuka bwino zigawo zamagulu ndi pulasitiki, ndipo sizivulaza mkuwa:
Chotsatira ndikuyang'ana pinout pa tsamba. .
Kuti tipitirize kugwira ntchito, tifunika kugulitsa magulu atatu olumikizirana:
- Deta I/O: D0, D1, D2, D3, D4, D5, D6, D7;
- Othandizira olamulira: ALE, RE, R / B, CE, CLE, WE;
- Zikhomo zamphamvu: VCC, GND.
Choyamba muyenera kusankha gulu la chipangizo cha monolithic (kwa ife ndi microSD), ndiyeno sankhani pinout yogwirizana (kwa ife ndi mtundu wa 2).
Pambuyo pake, muyenera kukonza khadi ya microSD pa bolodi la adaputala kuti muwotchere mosavuta.
Ndibwino kusindikiza chithunzi cha pinout cha chipangizo chanu cha monolithic musanayambe kugulitsa. Ikhoza kuikidwa pafupi ndi izo kuti zikhale zosavuta kuzitchula ngati kuli kofunikira.
Ndife okonzeka kuyamba soldering! Onetsetsani kuti kompyuta yanu ili bwino.
Ikani flux yamadzimadzi pamapini a microSD ndi burashi yaying'ono.
Pogwiritsa ntchito chotokosera chonyowa, ikani mipira yonse pazikhomo zamkuwa zomwe zalembedwa pa szematic. Ndi bwino kugwiritsa ntchito mipira ndi awiri a 75% ya kukula kwa kulankhula. Kuthamanga kwamadzimadzi kudzatithandiza kukonza mipira pamwamba pa microSD.
Mukayika mipira yonse pazolumikizana, muyenera kugwiritsa ntchito chitsulo chosungunulira kuti musungunule solder. Samalani! Njira zonse zimachitika modekha! Kuti musungunuke kwa nthawi yochepa kwambiri, gwirani mipira ndi nsonga yachitsulo chosungunuka.
Mipira yonse ikasungunuka, muyenera kugwiritsa ntchito gel osakaniza kuti mutsogolere kwa olumikizana nawo.
Pogwiritsa ntchito chowumitsira chowumitsa, muyenera kutenthetsa zolumikizana ndi kutentha kwa +200 Β° C. Flux imathandizira kufalitsa kutentha pamagulu onse ndikusungunula mofanana. Pambuyo pakuwotcha, zolumikizana zonse ndi mipira itenga mawonekedwe a hemispherical.
Tsopano muyenera kuchotsa zizindikiro zonse za flux ndi mowa. Muyenera kupopera pa microSD ndikuyeretsa ndi burashi.
Kenako, konzani mawaya. Ayenera kukhala ofanana kutalika, pafupifupi masentimita 5-7. Mukhoza kuyeza kutalika kwa mawaya ndi pepala.
Pambuyo pake, muyenera kuchotsa varnish yotsekera ku mawaya ndi scalpel. Kuti muchite izi, ingowakwapulani mbali zonse ziwiri.
Gawo lomaliza la kukonza mawaya ndikuwotcha mu rosin kuti agulitsidwe bwino.
Ndipo tsopano ndife okonzeka kugulitsa mawaya ku adapter board. Tikukulimbikitsani kuti muyambe kugulitsa kuchokera kumbali ya bolodi, ndikugulitsa mawaya kuchokera kumbali ina kupita ku chipangizo cha monolithic pansi pa microscope.
Pomaliza, mawaya onse amagulitsidwa ndipo ndife okonzeka kugwiritsa ntchito maikulosikopu kuti tigulitse mawaya ku microSD. Iyi ndiyo ntchito yovuta kwambiri, yomwe imafuna kuleza mtima kwakukulu. Ngati mukumva kutopa, pumulani, idyani chinthu chokoma ndi kumwa khofi (shuga wamagazi amathetsa kugwedezana chanza). Kenako pitirizani kugulitsa.
Kwa anthu odzanja lamanja, timalimbikitsa kugwira chitsulo cha soldering m'dzanja lamanja, ndikugwira ma tweezers ndi waya kumanzere.
Chitsulo chogulitsira chiyenera kukhala choyera! Musaiwale kuyeretsa pamene mukugulitsa.
Mutatha kugulitsa zikhomo zonse, onetsetsani kuti palibe amene akukhudza pansi! Zolumikizana zonse ziyenera kukhala zolimba kwambiri!
Tsopano titha kulumikiza bolodi yathu ya adaputala ku PC-3000 Flash ndikuyamba ntchito yowerengera deta.
Kanema wa ndondomeko yonse:
Zindikirani. transl.: Nditangotsala pang'ono kumasulira nkhaniyi, ndinapeza kanema wotsatira, woyenera mutuwo:
Source: www.habr.com