1, 3. nco ntsoov tsis txhob siv 5V (lub module nrog PCB tau txais 3V voltage regulator IC, thiab muaj peev xwm input 5V) backlight voltage yog mus txog 3.2V, thiab 20R tuaj yeem txuas hauv series hauv qab 3.3V fais fab mov -50R tam sim no limiting resistor.
2. Qhov TFT no tau tshaj 8/16-ntsis cov ntaub ntawv interface. Txoj kev hloov pauv yog pom tau los ntawm R1 thiab R2 ntawm cable. Lub 0 ohm resistor luv R1 rau 16-ntsis hom, luv R2 rau 8-ntsis hom, thiab sab sauv 8 ntsis (ie DB8-DB15) yog siv nyob rau hauv {{ 13}}ntsis hom. Pib txij lub Peb Hlis 17, 2010, qhov khoom xa tuaj yog 16-ntsis interface. Yog tias koj xav tau ib qho 8-ntsis interface, thov ceeb toom rau tus tswv ua ntej xa khoom, txwv tsis pub koj yuav tsum hloov koj tus kheej.
3. Cov ntaub ntawv chaw nres nkoj theem: Txoj kev xav, cov ntaub ntawv chaw nres nkoj yuav tsum tsis pub tshaj 3.3V. Yog tias koj yuav tsum siv 5V microcontroller IO los txuas rau cov ntaub ntawv tsheb npav, vim tias muaj qhov hluav taws xob clamp hauv tft, nws tuaj yeem siv tau, tab sis nws ib txwm tsis xwm yeem. . Cov kev sim thiab cov qauv xeem tuaj yeem ua tiav. Thaum ua cov khoom lag luam hauv cov khoom lag luam, txhawm rau txhim kho cov khoom ruaj khov, nws yog qhov zoo tshaj plaws los siv lub tshuab hluav taws xob qis ib leeg-chip microcomputer lossis ntxiv qib hloov IC. (AVR's IO tso zis muaj qhov muaj peev xwm ua tau zoo, thiab cov ntaub ntawv TFT sab hauv lub tsheb npav lub peev xwm clamping ntawm AVR raug txwv. Thaum siv AVR tsav tsheb, thov siv 3.3V los siv lub microcontroller. Yog tias koj yuav tsum siv lub zog 5V. muab AVR, thov ntxiv ib theem hloov IC)
(I0 ntawm AVR muaj qhov muaj peev xwm ua tau zoo tshaj plaws, thiab lub peev xwm sab hauv qhov hluav taws xob clamping ntawm TFT cov ntaub ntawv tsheb npav raug txwv. Thaum siv tus tsav tsheb AVR, thov siv 3.3V los txhawb lub microcontroller. Koj yuav tsum siv 5V fais fab mov AVR, thov ntxiv cov qib Conversion IC)
