Display Driver IC yog dab tsi?
DDIC ua tus txhais lus ntawm koj lub microcontroller lossis processor thiab LCD vaj huam sib luag. Nws tau txais cov duab cov ntaub ntawv, tsav lub rooj vag kab rau kab scanning, siv cov voltages meej rau pixels, thiab tswj lub sijhawm tshiab. Yog tsis muaj DDIC tsim nyog, txawm tias lub vaj huam sib luag zoo tshaj plaws yuav tsis pom qhov raug.
Plaub hom LCD zaub interfaces
SPI interface
SPI (Serial Peripheral Interface) yog qhov yooj yim thiab ua tau zoo, feem ntau tsuas yog siv 4 xov hlau: SCK ( moos), MOSI (cov ntaub ntawv tawm), CS (chip xaiv), thiab DC (cov ntaub ntawv / lus txib). Nws txhawb kev nrawm mus txog 80MHz theoretically, nrog rau kev siv tau zoo ntawm 20-40MHz. Zoo meej rau cov ntxaij vab tshaus 2.8 nti thiab me dua, zoo li 240x320 daws teeb meem.
RGB interface
RGB yog qhov sib txuam sib luag tiag tiag uas txhua lub voj voog moos xa tag nrho pixel (feem ntau RGB565 lossis RGB666). Nws yuav tsum tau nyob ib ncig ntawm 20 tus pins nrog rau cov teeb liab sync. Bandwidth txhawb 800x480 ntawm 60fps yooj yim. Tsis muaj GRAM sab hauv ntawm ntau lub vaj huam sib luag txhais tau hais tias tus tswv tsev yuav tsum tsis tu ncua kwj cov ntaub ntawv. Feem ntau hauv HMIs thiab nruab nrab - cov ntsiav tshuaj.
MIPI DSI
MIPI DSI siv siab-kev sib txawv ntawm txoj kab sib txawv (1-4 txoj kab), mus txog ntau-gigabit ceev. Txhawb Video Hom (nruam streaming) thiab Command Hom (sau rau hauv GRAM). Zoo heev rau high-resolution mobile zaub nrog tsawg EMI. Kev debugging yuav tsum tau ceev faj pib ua ntu zus uas txawv ntawm lub vaj huam sib luag.
LVDS
Low-Voltage Differential Signaling offers strong noise immunity and supports long cables (>1 m). Kev teeb tsa ib leeg lossis dual channel tuav Full HD thiab dhau mus. Siv dav hauv kev lag luam tag nrho -hauv-ib lub PC, saib xyuas kev kho mob, thiab cov khoom siv tsheb.
Nrov tsav ICs nyob rau hauv nthuav dav
ST7789: Ntau heev rau cov haujlwm embedded. Txhawb 240x240/240x320, SPI mus txog 80MHz, ua -hauv GRAM, RGB565/666. Cov ntaub ntawv zoo heev thiab kev txhawb nqa hauv tsev qiv ntawv.
ILI9341: Classic predecessor rau ST7789 nrog cov specs zoo sib xws tab sis cov lus txib sib txawv. Ntau qhov qhib - piv txwv muaj.
HX8399-C: High-end MIPI daws rau 1080x1920 daws teeb meem, siv hauv ntau lub xov tooj Android. Xws li cov yam ntxwv siab heev xws li CABC hloov kho lub teeb rov qab.
Xaus
Mastering zaub interfaces qhib qhov kawg muaj peev xwm rau koj cov phiaj xwm kho vajtse. Pib yooj yim nrog SPI thiab ST7789 kom yeej nrawm, tom qab ntawd nce raws li qhov xav tau loj hlob. Nco ntsoov xa mus rau cov ntaub ntawv tshwj xeeb thiab kuaj kom meej.
