{"id":1662,"date":"2021-11-18T18:35:30","date_gmt":"2021-11-18T17:35:30","guid":{"rendered":"https:\/\/www.onetimenexttime.sk\/arduino\/?post_type=product&#038;p=1662"},"modified":"2021-11-18T18:41:31","modified_gmt":"2021-11-18T17:41:31","slug":"4-channels-logic-level-converter-bi-directional-shifter-module-3-3v-5v","status":"publish","type":"product","link":"https:\/\/www.onetimenexttime.sk\/arduino\/index.php\/produkt\/4-channels-logic-level-converter-bi-directional-shifter-module-3-3v-5v\/","title":{"rendered":"4 Channels Logic Level Converter Bi-Directional Shifter Module 3.3V-5V"},"content":{"rendered":"<h2>4-kan\u00e1lov\u00fd konvertor logickej \u00farovne Modul obojsmern\u00e9ho radenia 3,3V-5V<\/h2>\n<p>4-cestn\u00fd 3,3V \/ 5V obojsmern\u00fd modul na konverziu \u00farovne<\/p>\n<p>S\u00fa\u010das\u0165ou v\u00fdvojovej dosky a vybavenia MCU je 3,3V pr\u00e1ca, ale aj v\u00fdvojov\u00e1 doska mikrokontrol\u00e9ra a vybavenie, senzory at\u010f. je 5,0V nap\u00e1janie, tak\u017ee ke\u010f dvaja potrebuj\u00fa komunikova\u0165, doch\u00e1dza k nezrovnalostiam pracovn\u00e9ho nap\u00e4tia, tak\u017ee \u017ee pou\u017e\u00edvate\u013eom Up nepohodln\u00e9. Tento produkt je navrhnut\u00fd tak, aby vyrie\u0161il tento probl\u00e9m a vyrie\u0161il tento probl\u00e9m. Tento modul poskytuje mo\u017enos\u0165 premostenia v 3,3V a 5,0V r\u00f4znych zariadeniach.<\/p>\n<p><strong>Aplik\u00e1cia produktu:<\/strong><\/p>\n<p>Komunik\u00e1cia 1,5V jedno\u010dipov\u00e9ho mikropo\u010d\u00edta\u010da a s\u00e9riov\u00e9ho portu.<\/p>\n<p>2,3,3 V s\u00e9riov\u00fd port na stiahnutie a 5V s\u00e9riov\u00e1 komunik\u00e1cia mikrokontrol\u00e9ra.<\/p>\n<p>S\u00e9riov\u00e1 komunik\u00e1cia 3,5V MCU a 3,3V aplika\u010dn\u00e9ho modulu.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Vlastnosti produktu:<\/strong><\/p>\n<p>-dod\u00e1va sa s nap\u00e4t\u00edm 3,3 V, s indik\u00e1torom nap\u00e1jania Pr\u00edkon s ochranou proti sp\u00e4tn\u00e9mu chodu a nem\u00f4\u017ee poskytn\u00fa\u0165 viac ako 150 mA pr\u00fadu.<\/p>\n<p>-aby sa dosiahla priama s\u00e9riov\u00e1 komunik\u00e1cia na \u00farovni 5V a 3,3V.<\/p>\n<p>-maxim\u00e1lna stabiln\u00e1 komunika\u010dn\u00e1 prenosov\u00e1 r\u00fdchlos\u0165 28800bps.<\/p>\n<p>-m\u00f4\u017ee dosiahnu\u0165 UART, IIC, 1-wire, SPI a \u010fal\u0161ie zbernicov\u00e9 sign\u00e1ly na \u00farovni 3V-5V obojsmernej konverzie.<\/p>\n<p><strong>kompatibilita:<\/strong><\/p>\n<p>(1) Syst\u00e9mov\u00fd nap\u00e1jac\u00ed zdroj AVCC 5V (2) Syst\u00e9m ASCL 5V SCL<\/p>\n<p>(3) ASDA pripojen\u00fd 5V syst\u00e9m SDA (4) AGND potom 5V syst\u00e9m GND<\/p>\n<p>(5) BVCC, potom 3V syst\u00e9mov\u00e9 nap\u00e1janie (6) BSCL, potom 3V syst\u00e9mov\u00e9 SCL<\/p>\n<p>(7) BSDA pripojen\u00fd 3V syst\u00e9m SDA (8) BGND potom 3V syst\u00e9m GND<\/p>\n<p><strong>Pozn\u00e1mka:<\/strong><\/p>\n<p>-ak je vysokotlakov\u00e1 oblas\u0165 a oblas\u0165 n\u00edzkeho nap\u00e4tia energie bola celkom tento modul G sta\u010d\u00ed vzia\u0165 uzemnenie.<\/p>\n<p>-konverzn\u00fd modul je ekvivalentn\u00fd priamej l\u00ednii, ka\u017ed\u00fd port zodpoved\u00e1 jednej ku jednej, ale nap\u00e4tie nie je rovnak\u00e9 ako na oboch stran\u00e1ch,<\/p>\n<p>T\u00fdm sa realizuje komunik\u00e1cia medzi r\u00f4znymi \u00farov\u0148ami.<\/p>\n<p>-modul nem\u00f4\u017ee by\u0165 pou\u017eit\u00fd ako regul\u00e1tor alebo funkcia transform\u00e1tora m\u00f4\u017ee by\u0165 pou\u017eit\u00e1 iba pre IO port<\/p>\n<p>\u00darove\u0148 medzi komunik\u00e1ciou mal\u00e9ho pr\u00fadu.<\/p>\n<p>-modul pin-pin \u017eiadne zv\u00e1ranie, ale tam s\u00fa zodpovedaj\u00face.<\/p>\n<p>&nbsp;<\/p>\n<div class=\"elementor-element elementor-element-657ef004 elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"657ef004\" data-element_type=\"widget\" data-widget_type=\"theme-post-title.default\">\n<div class=\"elementor-widget-container\">\n<h1 class=\"elementor-heading-title elementor-size-default\"><span><span class=\"goog-text-highlight\">Ako funguje obojsmern\u00fd konvertor logickej \u00farovne?\u00a0<\/span>Logick\u00fd prep\u00edna\u010d \u00farovne<\/span><\/h1>\n<\/div>\n<\/div>\n<div class=\"elementor-element elementor-element-3d56f577 elementor-widget elementor-widget-post-info\" data-id=\"3d56f577\" data-element_type=\"widget\" data-widget_type=\"post-info.default\">\n<div class=\"elementor-widget-container\">\n<p>V tomto n\u00e1vode sa pok\u00fasme porozumie\u0165 potrebe prevodn\u00edka logick\u00fdch \u00farovn\u00ed, r\u00f4znym sp\u00f4sobom pos\u00favania logick\u00fdch \u00farovn\u00ed a nakoniec tomu, ako funguje obojsmern\u00fd prevodn\u00edk logick\u00fdch \u00farovn\u00ed. Toto je ve\u013emi d\u00f4le\u017eit\u00e9, ak chcete pripoji\u0165 5V zariadenia ako Arduino k 3,3V zariadeniam ako ESP8266 alebo Nokia 5110 LCD.<\/p>\n<h2><span>\u010co je logick\u00e1 \u00farove\u0148?<\/span><\/h2>\n<p><span>Logick\u00e1 \u00farove\u0148 sign\u00e1lu je nap\u00e4tie alebo stav, v ktorom m\u00f4\u017ee existova\u0165.\u00a0Vo svete digit\u00e1lnej elektroniky m\u00f4\u017eu ma\u0165 vstupy a v\u00fdstupy iba dve nap\u00e4\u0165ov\u00e9 \u00farovne alebo stavy, ktor\u00e9 sa zvy\u010dajne ozna\u010duj\u00fa ako logick\u00e1 1 a logick\u00e1 0, alebo ZAPNUT\u00c9 a VYPNUT\u00c9 alebo PRAVDA a NEPRAVDA alebo VYSOK\u00c1 a N\u00cdZKA.<\/span><\/p>\n<p><span>V z\u00e1vislosti od typu Logic Family sa nap\u00e4tia pre tieto logick\u00e9 \u00farovne l\u00ed\u0161ia.\u00a0Ak si urob\u00edme v\u00fdlet po pam\u00e4\u0165ovej l\u00ednii, potom si m\u00f4\u017eeme spomen\u00fa\u0165 na niektor\u00e9 logick\u00e9 rodiny ako:<\/span><\/p>\n<ul>\n<li><em><span>RTL (odpor \u2013 tranzistorov\u00e1 logika)<\/span><\/em><\/li>\n<li><em><span>ECL (Emitter \u2013 Coupled Logic)<\/span><\/em><\/li>\n<li><em><span>DTL (di\u00f3da \u2013 tranzistorov\u00e1 logika)<\/span><\/em><\/li>\n<li><em><span>TTL (tranzistor \u2013 tranzistorov\u00e1 logika)<\/span><\/em><\/li>\n<li><em><span>PMOS (logika MOS typu P)<\/span><\/em><\/li>\n<li><em><span>NMOS (logika MOS typu N)<\/span><\/em><\/li>\n<li><em><span>CMOS (doplnkov\u00e1 logika MOS)<\/span><\/em><\/li>\n<\/ul>\n<p><span>Ka\u017ed\u00e1 logick\u00e1 skupina je definovan\u00e1 svojimi vlastn\u00fdmi logick\u00fdmi \u00farov\u0148ami nap\u00e4tia zodpovedaj\u00facimi logick\u00fdm vysok\u00fdm a logick\u00fdm n\u00edzkym a ich prahom pre vstup aj v\u00fdstup.\u00a0Zamerajme sa na dve d\u00f4le\u017eit\u00e9 logick\u00e9 rodiny v hist\u00f3rii polovodi\u010dov: TTL a CMOS.<\/span><\/p>\n<p><span>Nasleduj\u00face obr\u00e1zky zobrazuj\u00fa prahov\u00e9 hodnoty vstupn\u00e9ho a v\u00fdstupn\u00e9ho nap\u00e4tia pre logick\u00e9 rodiny 5V TTL, 5V CMOS a 3,3V TTL.<\/span><\/p>\n<\/div>\n<\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-31218 entered lazyloaded alignleft\" src=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Families-Voltage-Thresholds.jpg\" sizes=\"(max-width: 800px) 100vw, 800px\" srcset=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Families-Voltage-Thresholds.jpg 800w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Families-Voltage-Thresholds-300x206.jpg 300w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Families-Voltage-Thresholds-768x526.jpg 768w\" alt=\"Logika-rodiny-nap\u00e4tie-prahov\u00e9 hodnoty\" width=\"800\" height=\"548\" data-lazy-srcset=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Families-Voltage-Thresholds.jpg 800w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Families-Voltage-Thresholds-300x206.jpg 300w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Families-Voltage-Thresholds-768x526.jpg 768w\" data-lazy-sizes=\"(max-width: 800px) 100vw, 800px\" data-lazy-src=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Families-Voltage-Thresholds.jpg\" data-ll-status=\"loaded\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><span>Na obr\u00e1zku vy\u0161\u0161ie s\u00fa niektor\u00e9 symboly ako V\u00a0<\/span><sub><span>IL<\/span><\/sub><span>\u00a0, V\u00a0<\/span><sub><span>IH<\/span><\/sub><span>\u00a0, V\u00a0<\/span><sub><span>OL<\/span><\/sub><span>\u00a0at\u010f. Nasleduj\u00faca tabu\u013eka uv\u00e1dza v\u00fdznam t\u00fdchto symbolov.<\/span><\/p>\n<div class=\"su-table su-table-alternate\">\n<table>\n<tbody>\n<tr>\n<td width=\"47\"><span>V\u00a0<\/span><sub><span>IL<\/span><\/sub><\/td>\n<td width=\"151\"><span>N\u00edzke vstupn\u00e9 nap\u00e4tie<\/span><\/td>\n<td width=\"403\"><span>Maxim\u00e1lne nap\u00e4tie zo zeme, ktor\u00e9 sa pova\u017euje za logick\u00fd N\u00cdZKY vstup.<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"47\"><span>V\u00a0<\/span><sub><span>IX<\/span><\/sub><\/td>\n<td width=\"151\"><span>Vstupn\u00e9 nap\u00e4tie vysok\u00e9<\/span><\/td>\n<td width=\"403\"><span>Minim\u00e1lne nap\u00e4tie od V\u00a0<\/span><sub><span>CC,<\/span><\/sub><span>\u00a0ktor\u00e9 sa pova\u017euje za logick\u00fd HIGH vstup.<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"47\"><span>V\u00a0<\/span><sub><span>OL<\/span><\/sub><\/td>\n<td width=\"151\"><span>N\u00edzke v\u00fdstupn\u00e9 nap\u00e4tie<\/span><\/td>\n<td width=\"403\"><span>Maxim\u00e1lne nap\u00e4tie zo zeme, ktor\u00e9 sa pova\u017euje za logick\u00fd LOW v\u00fdstup.<\/span><\/td>\n<\/tr>\n<tr>\n<td width=\"47\"><span>V\u00a0<\/span><sub><span>OH<\/span><\/sub><\/td>\n<td width=\"151\"><span>Vysok\u00e9 v\u00fdstupn\u00e9 nap\u00e4tie<\/span><\/td>\n<td width=\"403\"><span>Minim\u00e1lne nap\u00e4tie od V\u00a0<\/span><sub><span>CC,<\/span><\/sub><span>\u00a0ktor\u00e9 sa pova\u017euje za logick\u00fd HIGH v\u00fdstup.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2><span id=\"Why_Do_We_Need_to_Shift_Logic_Levels\" class=\"ez-toc-section\"><\/span><span>Pre\u010do potrebujeme posun\u00fa\u0165 logick\u00e9 \u00farovne?<\/span><\/h2>\n<p><span>Pre porovnanie si vyberme 5V TTL, 5V CMOS a 3,3V CMOS logick\u00e9 rodiny (ke\u010f\u017ee CMOS sa stal dominantnou technol\u00f3giou v modern\u00fdch VLSI a TTL je popul\u00e1rny v skor\u0161\u00edch \u201e74\u201c s\u00e9ri\u00e1ch IC).<\/span><\/p>\n<p><span>\u010co ak chceme prepoji\u0165 5V zariadenie s 3,3V zariaden\u00edm alebo naopak?\u00a0Ak sa pozorne pozriete na vy\u0161\u0161ie uveden\u00fd obr\u00e1zok s prahov\u00fdmi nap\u00e4tiami, potom m\u00f4\u017eete probl\u00e9m pochopi\u0165.<\/span><\/p>\n<p><span>Napr\u00edklad, ak chcete pripoji\u0165 3,3 V CMOS zariadenie s 5 V TTL zariaden\u00edm, potom by nemal by\u0165 \u017eiadny probl\u00e9m, preto\u017ee logick\u00fd HIGH v\u00fdstup 3,3 V CMOS zariadenia je medzi 2,4 V a 3,3 V a logick\u00fd HIGH vstup 5 V TTL zariadenia je medzi 2V a 5V.<\/span><\/p>\n<p><span>Ale \u010do ak chcete pripoji\u0165 opa\u010dn\u00fdm sp\u00f4sobom, tj 5V TTL zariadenie s 3,3V CMOS zariaden\u00edm?\u00a0Potom m\u00e1me probl\u00e9m.\u00a0Logick\u00fd HIGH vstup 3,3V zariadenia CMOS je medzi 2V a 3,3V, zatia\u013e \u010do logick\u00fd HIGH v\u00fdstup 5V TTL zariadenia je medzi 2,4V a 5V, \u010do je podstatne viac, ako dok\u00e1\u017ee zvl\u00e1dnu\u0165 3,3V zariadenie.<\/span><\/p>\n<p><span>V\u00e4\u010d\u0161ina 3,3 V zariaden\u00ed dok\u00e1\u017ee tolerova\u0165 a\u017e 3,6 V a \u010doko\u013evek viac ako to sma\u017e\u00ed IC.\u00a0Tak\u017ee pri prip\u00e1jan\u00ed integrovan\u00fdch obvodov alebo zariaden\u00ed s r\u00f4znymi logick\u00fdmi \u00farov\u0148ami mus\u00edte by\u0165 mimoriadne opatrn\u00ed.<\/span><\/p>\n<p><span>Existuj\u00fa dva sp\u00f4soby, ako m\u00f4\u017eete tento probl\u00e9m vyrie\u0161i\u0165.\u00a0Jedn\u00fdm z nich je hrub\u00fd sp\u00f4sob pou\u017eitia obvodu rozde\u013eova\u010da nap\u00e4tia a druh\u00fdm sp\u00f4sobom (tie\u017e lep\u0161\u00edm sp\u00f4sobom) je pou\u017eitie prevodn\u00edka logickej \u00farovne alebo posunu logickej \u00farovne.<\/span><\/p>\n<h2><span id=\"Simple_Voltage_Divider\" class=\"ez-toc-section\"><\/span><span>Jednoduch\u00fd rozde\u013eova\u010d nap\u00e4tia<\/span><\/h2>\n<p><span>Ke\u010f\u017ee nie je probl\u00e9m spoji\u0165 3,3V zariadenie s 5V zariaden\u00edm, m\u00f4\u017eete pou\u017ei\u0165 obvod deli\u010da nap\u00e4tia, ke\u010f chcete pripoji\u0165 5V zariadenie s 3,3V zariaden\u00edm.<\/span><\/p>\n<p><span>Urobil som \u0161peci\u00e1lny tutori\u00e1l o z\u00e1kladoch deli\u010da nap\u00e4tia.\u00a0Ak chcete z\u00edska\u0165 podrobnej\u0161ie inform\u00e1cie, pozrite si\u00a0pr\u00edru\u010dku \u201e\u00a0<\/span><a href=\"https:\/\/www.electronicshub.org\/voltage-divider-circuit\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong><span>OBVOD DELI\u010cA NAP\u00c4TIA<\/span><\/strong><\/a><span>\u00a0\u201c.<\/span><\/p>\n<p><span>Obvod deli\u010da nap\u00e4tia jednoducho konvertuje vysok\u00e9 vstupn\u00e9 nap\u00e4tie (povedzme 5 V) na n\u00edzke v\u00fdstupn\u00e9 nap\u00e4tie (napr\u00edklad 3,3 V) pomocou iba dvoch odporov.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4559 entered lazyloaded alignleft\" src=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2014\/12\/Voltage-Divider-Formula-1.png\" sizes=\"(max-width: 481px) 100vw, 481px\" srcset=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2014\/12\/Voltage-Divider-Formula-1.png 481w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2014\/12\/Voltage-Divider-Formula-1-295x300.png 295w\" alt=\"Voltage Divider Circuit\" width=\"481\" height=\"488\" data-lazy-srcset=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2014\/12\/Voltage-Divider-Formula-1.png 481w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2014\/12\/Voltage-Divider-Formula-1-295x300.png 295w\" data-lazy-sizes=\"(max-width: 481px) 100vw, 481px\" data-lazy-src=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2014\/12\/Voltage-Divider-Formula-1.png\" data-ll-status=\"loaded\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><span>Zo\u00a0<\/span><a href=\"https:\/\/www.electronicshub.org\/basic-electrical-circuits-componentstypes\/\" target=\"_blank\" rel=\"noopener\"><span>z\u00e1kladnej<\/span><\/a><span>\u00a0te\u00f3rie\u00a0<a href=\"https:\/\/www.electronicshub.org\/basic-electrical-circuits-componentstypes\/\" target=\"_blank\" rel=\"noopener\">obvodov<\/a>\u00a0m\u00f4\u017eeme odvodi\u0165 rovnicu pre V\u00a0<\/span><sub><span>OUT<\/span><\/sub><span>\u00a0ako:<\/span><\/p>\n<p><span>V\u00a0<\/span><sub><span>OUT<\/span><\/sub><span>\u00a0= (V\u00a0<\/span><sub><span>IN<\/span><\/sub><span>\u00a0* R\u00a0<\/span><sub><span>2<\/span><\/sub><span>\u00a0) \/ (R\u00a0<\/span><sub><span>1<\/span><\/sub><span>\u00a0+ R\u00a0<\/span><sub><span>2<\/span><\/sub><span>\u00a0)<\/span><\/p>\n<p><span>Vo vy\u0161\u0161ie uvedenom okruhu, predpokladajme, \u017ee V-\u00a0<\/span><sub><span>IN<\/span><\/sub><span>\u00a05V a V\u00a0<\/span><sub><span>OUT<\/span><\/sub><span>\u00a0je 3.3V.\u00a0Ak zvol\u00edme R\u00a0<\/span><sub><span>1<\/span><\/sub><span>\u00a0ako 1 k\u03a9, potom pomocou vy\u0161\u0161ie uvedenej rovnice dostaneme R\u00a0<\/span><sub><span>2<\/span><\/sub><span>\u00a0ako 1 914 \u03a9.\u00a0Rezistor s najbli\u017e\u0161ou hodnotou k tomuto v\u00fdsledku je 2,2 k\u03a9.<\/span><\/p>\n<p><span>Ak pou\u017eijeme vy\u0161\u0161ie uveden\u00fa rovnicu s V\u00a0<\/span><sub><span>IN<\/span><\/sub><span>\u00a0ako 5V, R\u00a0<\/span><sub><span>1<\/span><\/sub><span>\u00a0ako 1 k\u03a9 a R\u00a0<\/span><sub><span>2<\/span><\/sub><span>\u00a0ako 2,2 k\u03a9, potom dostaneme V\u00a0<\/span><sub><span>OUT<\/span><\/sub><span>\u00a0ako 3,4 V, \u010do je prijate\u013en\u00e1 hodnota pre 3,3 V logick\u00e9 zariadenia.<\/span><\/p>\n<p><span>Deli\u010d nap\u00e4tia v\u0161ak nie je ide\u00e1lnym rie\u0161en\u00edm na konverziu logickej \u00farovne.\u00a0T\u00fato met\u00f3du pou\u017eite len pre pomal\u00e9 sign\u00e1ly a pre sp\u00ednacie vstupy.\u00a0Nie je to spo\u013eahliv\u00e1 met\u00f3da na pou\u017eitie vo vysokor\u00fdchlostn\u00fdch sign\u00e1loch ako I\u00a0<\/span><sup><span>2<\/span><\/sup><span>\u00a0C alebo SPI.<\/span><\/p>\n<h2><span id=\"Bidirectional_Logic_Level_Converter\" class=\"ez-toc-section\"><\/span><span>Obojsmern\u00fd konvertor logickej \u00farovne<\/span><\/h2>\n<p><span>V priebehu rokov sme videli ve\u013ea 3,3V zariaden\u00ed ako Raspberry Pi, ESP8266, ESP32, Nokia 5110 LCD, HC-05 Bluetooth modul, BMP180 barometrick\u00fd tlakov\u00fd senzor at\u010f.<\/span><\/p>\n<p><span>Ak chcete pripoji\u0165 3.3VI\u00a0<\/span><sup><span>2<\/span><\/sup><span>\u00a0C alebo SPI Sensor k 5V zariadeniu ako Arduino s podporou obojsmernej komunik\u00e1cie, rie\u0161en\u00edm je pou\u017ei\u0165 extern\u00fd Level Shifter alebo Logic Level Converter.<\/span><\/p>\n<p><span>Tu prezentovan\u00fd konvertor logickej \u00farovne podporuje obojsmern\u00e9 radenie \u00farovne pomocou jedn\u00e9ho MOSFET na zbernicov\u00fa linku a tie\u017e chr\u00e1ni stranu n\u00edzkeho nap\u00e4tia pred \u0161pi\u010dkami na strane vysok\u00e9ho nap\u00e4tia.<\/span><\/p>\n<p><span>Zv\u00e1\u017ete nasleduj\u00faci obvod pozost\u00e1vaj\u00faci z N-kan\u00e1lov\u00e9ho MOSFETu s internou vyp\u00fa\u0161\u0165acou \u2013 substr\u00e1tovou di\u00f3dou (je d\u00f4le\u017eit\u00e9 ju ma\u0165).\u00a0Rozde\u013eme obvod na dve \u010dasti \u013eav\u00fa stranu alebo stranu n\u00edzkeho nap\u00e4tia a prav\u00fa stranu alebo stranu vysok\u00e9ho nap\u00e4tia.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-31217 entered lazyloaded\" src=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Bidirectional-Logic-Level-Conveter-Schematic.jpg\" sizes=\"(max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Bidirectional-Logic-Level-Conveter-Schematic.jpg 700w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Bidirectional-Logic-Level-Conveter-Schematic-300x204.jpg 300w\" alt=\"Bidirectional-Logic-Level-Converter-Schematic\" width=\"700\" height=\"475\" data-lazy-srcset=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Bidirectional-Logic-Level-Conveter-Schematic.jpg 700w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Bidirectional-Logic-Level-Conveter-Schematic-300x204.jpg 300w\" data-lazy-sizes=\"(max-width: 700px) 100vw, 700px\" data-lazy-src=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Bidirectional-Logic-Level-Conveter-Schematic.jpg\" data-ll-status=\"loaded\" \/><\/p>\n<p><span>Ka\u017ed\u00e1 strana m\u00e1 in\u00e9 nap\u00e1jacie nap\u00e4tie a tie\u017e r\u00f4zne logick\u00e9 \u00farovne.\u00a0Zbernica na strane n\u00edzkeho nap\u00e4tia je vytiahnut\u00e1 VYSOKO na 3,3V a aj nap\u00e1janie zariadenia na tejto strane je 3,3V.<\/span><\/p>\n<p><span>Prav\u00e1 zbernica je vytiahnut\u00e1 VYSOKO na 5V a nap\u00e1jacie nap\u00e4tie zariadenia je 5V.\u00a0Br\u00e1na MOSFETu mus\u00ed by\u0165 pripojen\u00e1 k n\u00edzkonap\u00e4\u0165ov\u00e9mu zdroju, tj v tomto pr\u00edpade 3,3V.\u00a0Zdroj a odtok MOSFET s\u00fa pripojen\u00e9 k n\u00edzkonap\u00e4\u0165ovej zbernici a vysokonap\u00e4\u0165ovej zbernici.<\/span><\/p>\n<p><span>Tento jednoduch\u00fd obvod p\u00f4sob\u00ed ako obojsmern\u00fd logick\u00fd pos\u00fava\u010d \u00farovne.<\/span><\/p>\n<h2><span id=\"How_Bidirectional_Logic_Level_Converter_Works\" class=\"ez-toc-section\"><\/span><span>Ako funguje prevodn\u00edk \u00farovne obojsmernej logiky?<\/span><\/h2>\n<p><span>Pozrime sa teraz, ako vy\u0161\u0161ie uveden\u00e9 nastavenie funguje ako obojsmern\u00fd konvertor logickej \u00farovne.\u00a0Aby som pr\u00e1cu jasne pochopil, dovo\u013ete mi rozdeli\u0165 oper\u00e1ciu do troch stavov.<\/span><\/p>\n<h3><span id=\"Standby_State\" class=\"ez-toc-section\"><\/span><span>Pohotovostn\u00fd stav<\/span><\/h3>\n<p><span>V prvom stave ani zariadenie, tj zariadenie na n\u00edzkonap\u00e4\u0165ovej strane ani zariadenie na vysokonap\u00e4\u0165ovej strane nes\u0165ahuje zbernicu na n\u00edzku \u00farove\u0148.\u00a0V tomto pr\u00edpade je n\u00edzkonap\u00e4\u0165ov\u00e1 zbernica \u0165ahan\u00e1 z vysok\u00e9ho na n\u00edzke nap\u00e4tie<\/span><\/p>\n<p><span>Ke\u010f\u017ee br\u00e1na aj zdroj MOSFETu s\u00fa pripojen\u00e9 k 3,3 V, V\u00a0<\/span><sub><span>GS<\/span><\/sub><span>\u00a0je 0 V, \u010do je pod prahov\u00fdm nap\u00e4t\u00edm MOSFETu.\u00a0V\u00fdsledkom je, \u017ee MOSFET nie je vodiv\u00fd a to umo\u017e\u0148uje vysokonap\u00e4\u0165ov\u00fa zbernicu vytiahnu\u0165 vysoko na 5V.<\/span><\/p>\n<p><span>Tak\u017ee v tomto stave s\u00fa obe strany zbernice na logickej VYSOKEJ, ale na r\u00f4znych \u00farovniach nap\u00e4tia.<\/span><\/p>\n<h3><span id=\"33V_Device_Pulls_Down_the_Bus\" class=\"ez-toc-section\"><\/span><span>3,3V zariadenie s\u0165ahuje zbernicu<\/span><\/h3>\n<p><span>Druh\u00fd stav je, ke\u010f 3,3V zariadenie stiahne zbernicu nadol na logick\u00fa LOW \u00farove\u0148.\u00a0Br\u00e1na MOSFETu je st\u00e1le na 3,3 V, ale zdroj sa zn\u00ed\u017ei.\u00a0V\u00fdsledkom je, \u017ee V\u00a0<\/span><sub><span>GS sa<\/span><\/sub><span>\u00a0stane 3,3 V, \u010do je v\u00e4\u010d\u0161ie ako prahov\u00e9 nap\u00e4tie MOSFET a to umo\u017e\u0148uje MOSFET vies\u0165.<\/span><\/p>\n<p><span>Preto\u017ee MOSFET je teraz vodiv\u00fd, vysokonap\u00e4\u0165ov\u00e1 zbernica je stiahnut\u00e1 3,3 V zariaden\u00edm na logick\u00fa hodnotu LOW.\u00a0Preto s\u00fa obe strany zbernice na logickej N\u00cdZKE s rovnakou \u00farov\u0148ou nap\u00e4tia.<\/span><\/p>\n<h3><span id=\"5V_Device_Pulls_Down_the_Bus\" class=\"ez-toc-section\"><\/span><span>5V zariadenie stiahne zbernicu<\/span><\/h3>\n<p><span>V tre\u0165om stave 5V zariadenie stiahne vysokonap\u00e4\u0165ov\u00fa bo\u010dn\u00fa zbernicu na logick\u00fa N\u00cdZKU \u00farove\u0148.\u00a0Prostredn\u00edctvom di\u00f3dy Drain \u2013 Substrate sa n\u00edzkonap\u00e4\u0165ov\u00e1 strana s\u0165ahuje nadol, k\u00fdm V\u00a0<\/span><sub><span>GS<\/span><\/sub><span>\u00a0nedosiahne prahov\u00e9 nap\u00e4tie.<\/span><\/p>\n<p><span>MOSFET teraz za\u010dne vies\u0165, \u010do bude \u010falej \u0165aha\u0165 n\u00edzkonap\u00e4\u0165ov\u00fa bo\u010dn\u00fa zbernicu na logick\u00fa \u00farove\u0148 N\u00cdZKEHO nap\u00e4tia pomocou 5V zariadenia.\u00a0Aj v tomto pr\u00edpade s\u00fa obe strany zbernice na logickej \u00farovni LOW pri rovnakom nap\u00e4t\u00ed.<\/span><\/p>\n<p><span>Ak teda skombinujeme tieto tri stavy, m\u00f4\u017eeme dospie\u0165 k z\u00e1veru, \u017ee logick\u00e9 \u00farovne s\u00fa posunut\u00e9 v oboch smeroch.<\/span><\/p>\n<p><span>Phillips publikoval kr\u00e1snu aplika\u010dn\u00fa pozn\u00e1mku na t\u00fato t\u00e9mu s n\u00e1zvom \u201eObojsmern\u00fd prep\u00edna\u010d \u00farovne pre I\u00b2C-bus a in\u00e9 syst\u00e9my\u201c.\u00a0Ak chcete z\u00edska\u0165 \u010fal\u0161ie inform\u00e1cie, vyh\u013eadajte v\u00fdraz \u201eAN97055\u201c.<\/span><\/p>\n<h2><span id=\"Logic_Level_Converter_Modules\" class=\"ez-toc-section\"><\/span><span>Moduly prevodn\u00edka logickej \u00farovne<\/span><\/h2>\n<p><span>Mnoho v\u00fdrobcov modulov kombinuje 4 tak\u00e9to obvody radenia \u00farovne zalo\u017een\u00e9 na MOSFET, aby vyvinuli 4-zbernicov\u00e9 alebo 4-kan\u00e1lov\u00e9 moduly logick\u00e9ho prevodn\u00edka \u00farovne.<\/span><\/p>\n<p><span>Sch\u00e9ma jedn\u00e9ho tak\u00e9hoto modulu je zn\u00e1zornen\u00e1 na nasleduj\u00facom obr\u00e1zku.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-31221 entered lazyloaded\" src=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Shifter-Module-Schematic.jpg\" sizes=\"(max-width: 1000px) 100vw, 1000px\" srcset=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Shifter-Module-Schematic.jpg 1000w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Shifter-Module-Schematic-300x47.jpg 300w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Shifter-Module-Schematic-768x121.jpg 768w\" alt=\"Logic-Level-Shifter-Module-Schematic\" width=\"1000\" height=\"157\" data-lazy-srcset=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Shifter-Module-Schematic.jpg 1000w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Shifter-Module-Schematic-300x47.jpg 300w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Shifter-Module-Schematic-768x121.jpg 768w\" data-lazy-sizes=\"(max-width: 1000px) 100vw, 1000px\" data-lazy-src=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Shifter-Module-Schematic.jpg\" data-ll-status=\"loaded\" \/><\/p>\n<figure id=\"attachment_31221\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-31221\"><figcaption id=\"caption-attachment-31221\" class=\"wp-caption-text\"><span>Sch\u00e9ma 4-kan\u00e1lov\u00e9ho konvertora logickej \u00farovne<\/span><\/figcaption><\/figure>\n<p><span>Ak sa pozriete na obr\u00e1zok typick\u00e9ho 4-kan\u00e1lov\u00e9ho modulu Level Shifter Module, pozost\u00e1va z 12 kol\u00edkov v dvoch radoch.\u00a0Horn\u00fd rad pozost\u00e1va z vysokonap\u00e4\u0165ov\u00fdch nap\u00e1jac\u00edch a uzem\u0148ovac\u00edch kol\u00edkov (HV a GND) a 4 vysokonap\u00e4\u0165ov\u00fdch kan\u00e1lov (HV1, HV2, HV3 a HV4).<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-31220 entered lazyloaded\" src=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Converter-Module-1.jpg\" sizes=\"(max-width: 500px) 100vw, 500px\" srcset=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Converter-Module-1.jpg 500w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Converter-Module-1-300x300.jpg 300w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Converter-Module-1-150x150.jpg 150w\" alt=\"Logic-Level-Converter-Modul\" width=\"500\" height=\"500\" data-lazy-srcset=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Converter-Module-1.jpg 500w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Converter-Module-1-300x300.jpg 300w, https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Converter-Module-1-150x150.jpg 150w\" data-lazy-sizes=\"(max-width: 500px) 100vw, 500px\" data-lazy-src=\"https:\/\/www.electronicshub.org\/wp-content\/uploads\/2021\/01\/Logic-Level-Converter-Module-1.jpg\" data-ll-status=\"loaded\" \/><\/p>\n<p><span><span class=\"\">Spodn\u00fd rad pozost\u00e1va z n\u00edzkonap\u00e4\u0165ov\u00e9ho zdroja a uzemnenia (LV a GND) a 4 n\u00edzkonap\u00e4\u0165ov\u00fdch kan\u00e1lov (LV1, LV2, LV3 a LV4).\u00a0<\/span>Skombinoval som dva tak\u00e9to moduly, aby som vytvoril 8-kan\u00e1lov\u00fd konvertor logickej \u00farovne.<\/span><\/p>\n<h2><span id=\"Conclusion\" class=\"ez-toc-section\"><\/span><span>Z\u00e1ver<\/span><\/h2>\n<p><span>V tomto n\u00e1vode ste sa dozvedeli o logick\u00fdch \u00farovniach, potrebe konverzie logickej \u00farovne, jednoduchom prevode \u00farovne nap\u00e4tia zalo\u017eenom na deli\u010di nap\u00e4tia a ve\u013emi u\u017eito\u010dnom obojsmernom prevodn\u00edku logickej \u00farovne so sch\u00e9mou a modulom.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>4-kan\u00e1lov\u00fd konvertor logickej \u00farovne Modul obojsmern\u00e9ho radenia 3,3V-5V 4-cestn\u00fd 3,3V \/ 5V obojsmern\u00fd modul na konverziu \u00farovne S\u00fa\u010das\u0165ou v\u00fdvojovej dosky&hellip;<\/p>\n","protected":false},"featured_media":1663,"template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"product_cat":[16,80,30],"product_tag":[],"class_list":{"0":"post-1662","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ard","7":"product_cat-i2c","8":"product_cat-programovanie","10":"first","11":"instock","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>4 Channels Logic Level Converter Bi-Directional Shifter Module 3.3V-5V - Arduino e-shop<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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