Ntawm peb feem ntau siv tib neeg-khoos phis tawj sib tham sib interfaces, ntxiv rau cov raj digital, LEDs, thiab LCD1602 peb tau hais ua ntej, kuj tseem muaj hom LCD npo uas siv ntau dua. Kuv ntseeg tias txhua tus phooj ywg uas tau ntsib nrog ib leeg-chip microcomputers paub tias nws yog 12864 LCD. Raws li lub npe implies, 12864 txhais tau hais tias nws tuaj yeem tso saib 128 cov ntsiab lus nyob rau hauv kab rov tav thiab 64 cov ntsiab lus nyob rau hauv txoj kab ntsug. Peb nquag siv 12864 LCD modules muaj cov tsev qiv ntawv font thiab cov tsis muaj font qiv. Kuj tseem muaj ntau hom kev tswj chips, xws li KS0108, T6963, ST7920, thiab lwm yam. Ntawm no peb siv 12864 LCD npo nrog ST7920 ua lub ntsiab tswj nti kom kawm paub tsav nws. (Lub vijtsam LCD siv Jinpeng's OCMJ4X8C).
LCD piav qhia ntawm lcd12864:
Cia' thawj zaug nkag siab txog nws txoj kev sib txuas. Hauv qab no yog daim duab qhia kev sib txuas ntawm circuit:
Raws li tuaj yeem pom los ntawm daim duab saum toj no, ntxiv rau 8-ntsis cov ntaub ntawv sib luag ntawm PO chaw nres nkoj, muaj ob peb kab xws li RS, RW, thiab E rau kev sib txuas ntawm LCD module thiab microcontroller. Ntawm lawv, R / S yog cov lus txib thiab cov ntaub ntawv sau npe xaiv tswj kab (chip xaiv hauv hom serial), R / W yog nyeem thiab sau kab tswj (cov ntaub ntawv kab hauv hom serial), thiab E yog cov kab ua haujlwm (serial hom ) Cov kab hauv qab no).
Los ntawm cov kab tswj hwm thiab cov ntaub ntawv kab, ua ke nrog nws lub sijhawm ua haujlwm, peb tuaj yeem sau tus neeg tsav tsheb sib xws. Saib ntawm daim duab sau sij hawm nyob rau hauv parallel hom:
