HOLTEK HT8 MCU LVD LVR Ntchito

HT8 MCU LVD/LVR Maupangiri Ogwiritsa Ntchito

D/N: AN0467EN

Mawu Oyamba

Mitundu ya Holtek 8-bit MCU imapereka ntchito ziwiri zothandiza kwambiri komanso zothandiza, LVD (Low Vol.tage Detection) ndi LVR (Low Voltagndi Bwezerani). Ngati magetsi a MCU voltage (VDD) imakhala yachilendo kapena yosakhazikika, ntchitozi zidzalola kuti MCU ipereke chenjezo kapena kukonzanso mwamsanga kuti athandizidwe kuti apitirize kugwira ntchito moyenera.
Ma LVD ndi LVR onse amagwiritsidwa ntchito kuyang'anira kuchuluka kwa magetsi a MCUtagndi (VDD). Pamene wapezeka mphamvu magetsi mtengo ndi wotsika kuposa anasankha otsika voltage mtengo, ntchito ya LVD ipanga chizindikiro chosokoneza pomwe mbendera zonse za LVDO ndi zosokoneza zimayikidwa. Ntchito ya LVR ndi yosiyana chifukwa imakakamiza MCU kukonzanso. Cholemba ichi chidzatenga HT66F0185 ngati example MCU kuti ifotokoze mwatsatanetsatane ntchito za LVD ndi LVR za Holtek Flash MCUs.

Kufotokozera Kwantchito

LVD - Low Voltage Kuzindikira

Ma Holtek MCU ambiri ali ndi ntchito ya LVD, yomwe imagwiritsidwa ntchito kuyang'anira VDD voltage. Pamene VDD voltage ali ndi mtengo wotsika kuposa LVD configured voltage ndipo imakhazikika kwa nthawi yopitilira nthawi ya tLVD, ndiye kuti chizindikiro chosokoneza chidzapangidwa. Apa mbendera ya LVDO ndi mbendera yosokoneza ya LVD idzakhazikitsidwa. Madivelopa amatha kuzindikira chizindikirocho kuti adziwe ngati makinawo ali otsika kwambiritage. MCU imatha kuchitanso ntchito zofananira kuti dongosolo lizigwira ntchito moyenera komanso kukhazikitsa chitetezo chotsitsa mphamvu ndi ntchito zina zofananira.
Ntchito ya LVD imayendetsedwa pogwiritsa ntchito kaundula kamodzi kotchedwa LVDC. Chithunzi cha HT66F0185ample, ma bits atatu mu kaundulayu, VLVD2~VLVD0, amagwiritsidwa ntchito kusankha chimodzi mwa zisanu ndi zitatu zokhazikika.tages m'munsimu ndi otsika voltage chikhalidwe chidzatsimikiziridwa. LVDO pang'ono ndi LVD yotulutsa mbendera yozungulira. Pamene mtengo wa VDD uli waukulu kuposa VLVD, chizindikiro cha LVDO chidzachotsedwa ku 0. Pamene mtengo wa VDD uli wotsika kuposa VLVD, chizindikiro cha LVDO ndi kusokoneza pempho la LVF mbendera lidzakhazikitsidwa. Nthawi zambiri, chizindikiro cha LVF chosokoneza chofunsira chimakhala mkati mwazosokoneza zamitundu yambiri ndipo chimayenera kuyeretsedwa ndi pulogalamuyo. Zambiri zamakaundula a ntchito za LVD ndizofanana ndi zomwe zikuwonetsedwa pachithunzi 1, komabe ndibwino kuti muloze ku database ya MCU kuti mumve zambiri chifukwa pakhoza kukhala kuchotserapo.

Ntchito ya HT8 MCU LVD imakhazikitsidwa pogwiritsa ntchito zosankha kapena mapulogalamu. Zotsatirazi zikufotokozera kasinthidwe ka mapulogalamu a HT66F0185 MCU.

Chithunzi 1
LVR - Low Voltagndi Bwezerani

Ma HT8 MCU ali ndi mphamvu yotsikatage yambitsaninso dera kuti muwunikire VDD voltage. Pamene VDD voltagMtengo wa e ndi wotsika kuposa mtengo wa VLVR wosankhidwa ndikukhazikika kwa nthawi yopitilira nthawi ya TLVR, ndiye kuti MCU ipereka mphamvu yotsika.tage bwererani ndipo pulogalamuyo idzalowa m'malo okonzanso. Mtengo wa VDD ukabwerera pamtengo wapamwamba kuposa VLVR, MCU ibwerera kuntchito yanthawi zonse. Apa pulogalamuyo iyambiranso kuchokera ku adilesi 00h, pomwe mbendera ya LVRF idzakhazikitsidwanso ndipo iyenera kuchotsedwa ku 0 ndi pulogalamu yofunsira.
Chithunzi cha HT66F0185ample, LVR imapereka ma voliyumu anayi osasankhidwatagzili mu kaundula wa LVRC. Pamene mtengo kasinthidwe kaundula si mmodzi wa anayi voltage amawerengera, MCU ipanga kukonzanso ndipo kaundula adzabwerera ku mtengo wa POR. Ntchito ya LVR itha kugwiritsidwanso ntchito ndi MCU kupanga kukonzanso mapulogalamu.

Chithunzi 2
Zindikirani: Nthawi yokonzanso ikhoza kukhala yosiyana m'ma MCU osiyanasiyana, chifukwa chake ndikofunikira kutchulanso deta yeniyeni The Mining Opareting Vol.tages ikhoza kukhala yosiyana pamayendedwe osiyanasiyana. Ogwiritsa ntchito amatha kukonza VLVR molingana ndi mphamvu yocheperakotage wa ma frequency osankhidwa kuti dongosolo lizigwira ntchito bwino.

Main Features

tLVDS (Nthawi Yokhazikika ya LVDO)
Chogulitsacho chimatha kuletsa ntchito ya LVD kuti isunge mphamvu ndikuyiyambitsanso ikafunika kugwiritsidwa ntchito. Popeza ntchito ya LVD imafuna nthawi yokhazikika yofikira ku 150μs kuti ikhale yolemala kuti ikhale yokhazikika, ndikofunikira kuyika nthawi yochedwa kuti ntchito ya LVD ikhazikike musanagwiritse ntchito LVD kuti mudziwe molondola ngati MCU ili ndi mphamvu yochepa.tagndi state.

Chithunzi 3
tLVD (Minimum Low Voltage Width to Interrupt)
Pambuyo pozindikira kutsika kwa voltage chizindikiro, LVD imathanso kugwiritsa ntchito kusokoneza kwa LVD kuti izindikire kuyambitsa kwake komanso kuvotera LVDO bit. Izi zipangitsa kuti pulogalamuyo ikhale yabwino. Kusokoneza kwa LVD kumachitika pamene mtengo wa VDD uli wotsika kuposa LVD kuzindikira voltage ndipo imasungidwa kwa nthawi yoposa nthawi ya tLVD. Pakhoza kukhala phokoso pamagetsi, makamaka pakuyesa kwa EMC mu mapulogalamu a AC, chifukwa chake pamakhala mwayi wolakwika wa LVD. Komabe, nthawi ya tLVD ikuyenera kusefa phokosoli, ndikupangitsa kuti LVD iwoneke mokhazikika.

TLVR (Minimum Low Voltage Width to Reset)
Pamene mtengo wa VDD ndi wotsika kuposa LVR voltage ndikukhazikika kwa nthawi yopitilira nthawi ya TLVR, MCU ipereka mphamvu yotsikatagndi reset. Kukhala ndi nthawi ya tLVR iyi kumapangitsa kuti phokoso lamagetsi lisefedwe, kupangitsa kuti LVR izindikire kukhala yokhazikika.

Mfundo Zoyendetsera Ntchito

Kusiyana pakati pa ntchito za LVD ndi LVR ndikuti ntchito ya LVD imangoyambitsa chizindikiro chochenjeza chomwe chimadziwitsa MCU pasadakhale voliyumu.tagndi kusakhazikika kapena kusakhazikika. Chifukwa chake MCU ikhoza kuchitapo kanthu kapena kugwiritsa ntchito njira zodzitetezera. LVR ndi yosiyana chifukwa imapanga kukonzanso kwa MCU. Apa MCU nthawi yomweyo imayambiranso ndipo imalumphira ku pulogalamu yoyambira. Chifukwa chake, mukamagwiritsa ntchito zonse ziwiri pamodzi, LVR voltage nthawi zambiri imasinthidwa kuti ikhale ndi mphamvu yocheperakotage kuposa LVD voltage. Mtengo wa VDD ukagwa, ntchito ya LVD idzayambika poyamba kuti MCU igwiritse ntchito njira zina zotetezera ntchito ya LVR isanayambe, yomwe iyenera kusunga kukhazikika kwa mankhwala.
Chithunzi cha HT66F0185ampndi, pafupipafupi dongosolo ndi 8MHz ndi voltagmtundu wa e uli pakati pa 2.2V ndi 5.5V. Ngati LVR ikonzanso voltage idakonzedwa kuti ikhale 2.1V, ndiye zikuwoneka ngati kuti ntchito ya LVR siyikuphatikiza mphamvu yocheperako.tage. Komabe 2.2V yochepa MCU yogwira ntchito voltage sichimatanthawuza pomwe HIRC kapena crystal oscillators amasiya kuyendayenda, chifukwa chake LVR voltage yopangidwa ndi 2.1V voltage sichingakhudze ntchito yachibadwa ya MCU.
Kwa ma frequency a 16MHz ndi 20MHz, voltage ndi 4.5V ~ 5.5V ndi LVR reset voltage idakonzedwa kuti ikhale 3.8V, ndiye zikuwoneka ngati kuti ntchito ya LVR siyimakhudza kuchuluka kwa magwiridwe antchito a MCU.tage kwa 16MHz ndi 20MHz. Komabe, 4.5V yochepa MCU yogwira ntchito voltage sichimatanthawuza pomwe kristalo oscillator imasiya kuyendayenda, chifukwa chaketagE osiyanasiyana 3.8V ~ 4.5V ndi galasi oscillator adzapitiriza ntchito. Apa palibe chodetsa nkhawa ndi magwiridwe antchito achilendo.
Ngati makina pafupipafupi ndi 16MHz kapena 20MHz ndipo ngati LVR yakhazikitsidwa pamtengo wa 3.8V ndiye pamene VDD vol.tage imagwera pansi pa 3.8V, ntchito ya LVR idzatsegulidwa ndikukhazikitsanso MCU. Mtengo woyamba wa LVRC ndi 2.1V pakukonzanso kwa LVR, apa zigawo ziwiri zotsatirazi zidzachitika:

• VDD ikagwa pansi pa 3.8V, koma osati pansi pa malo otsika a crystal oscillation, MCU idzayenda mozungulira LVR ikayambiranso. Pulogalamuyo idzakonza zolembera za LVRC. Kaundula wa LVRC akakonzedwa, MCU idzakhazikitsanso LVR ikadikirira nthawi ya TLVR, ndikubwereza.
• Ngati mtengo wa VDD ukugwera pansi pa 3.8V, voltage ili kale pansi pa kristalo oscillator poyambira, choncho MCU sidzatha kuyambitsa oscillation pambuyo pa kubwezeretsa LVR. Madoko onse a I/O adzasinthidwa kukhala malo olowetsamo mphamvu ikayatsidwanso. MCU sidzapereka malangizo aliwonse ndipo sidzachitapo kanthu pa dera.

Malingaliro a Ntchito

Nthawi yogwiritsira ntchito LVD
Ntchito ya LVD imagwiritsidwa ntchito kwambiri poyang'ana momwe batire ilili muzinthu zoyendetsedwa ndi batire. Batire ikapezeka kuti ikutha mphamvu, MCU imatha kupangitsa wogwiritsa ntchito kuti asinthe batire kuti agwire bwino ntchito. Pazinthu zomwe zimagwiritsidwa ntchito ndi AC, ntchito ya LVD imagwiritsidwa ntchito kuzindikira VDD voltage, yomwe ingagwiritsidwe ntchito kudziwa ngati magetsi a AC achotsedwa. Za example, kwa denga lamp, poyang'anira LVDO pang'ono kuchokera kumunsi kupita kumtunda kenako kutsika kachiwiri, zikhoza kutsimikiziridwa ngati kusinthaku kukugwiritsidwa ntchito kusintha denga l.amp kusintha mulingo wowunikira kapena kutentha kwamtundu.

Nthawi yogwiritsira ntchito LVR
Ntchito ya LVR imagwiritsidwa ntchito nthawi zambiri pamapulogalamu oyendetsedwa ndi batire ndikuyatsidwa batire ikasinthidwa. Nthawi zambiri, zinthu zotere ndizinthu zamagetsi zotsika pomwe zopangirazo zimakhala ndi mphamvu zokwanira zosungira mphamvu zosungira VDD vol.tage. Kawirikawiri voltage sitsika ku 0V mumasekondi opitilira 10. Komabe popeza iyi ndi njira yochepetsera mphamvu pang'onopang'ono, pali kuthekera kwakukulu kuti VDD voltage akhoza kutsika pamtengo wotsika kuposa LVR voltage, zomwe zidzapangitse MCU kupanga kukonzanso kwa LVR. Batire yatsopano ikayikidwa, VDD voltage adzakhala apamwamba kuposa LVR voltage, ndipo dongosolo lidzabwerera ndikupitiriza ndi ntchito yachibadwa.

Kugwiritsa ntchito LVR ndi LVD mu IDLE / SLEEP Mode
Dongosolo likalowa mu IDLE / SLEEP mode, LVR siyothandiza, kotero LVR sichitha kukonzanso dongosolo, ngakhale silingawononge mphamvu. MCU ikalowa munjira yogona, ntchito ya LVD idzazimitsidwa yokha. M'matchulidwe ena pali njira ziwiri zogonera, SLEEP0 ndi SLEEP1. Chithunzi cha HT66F0185ample, musanalowe mu SLEEP0 Mode, ntchito ya LVD iyenera kuyimitsidwa mwa kuchotsa LVDEN bit mu regista ya LVDC ku 0. Ntchito ya LVD idzagwira ntchito polowa mu SLEEP1 Mode. Onani zidziwitso zatsatanetsatane za MCU.
Padzakhala kugwiritsira ntchito mphamvu pang'ono pamene ntchito ya LVD yayatsidwa. Chifukwa chake, muzogwiritsa ntchito batri zomwe zimafunikira kuchepetsa kugwiritsa ntchito mphamvu, ndikofunikira kuganizira momwe ntchito ya LVD imagwirira ntchito pomwe dongosolo likulowa munjira iliyonse yopulumutsa mphamvu, mwina SLEEP kapena IDLE Modes.

Zolemba Zina 

• Ngati zonse za LVR ndi LVD zimagwira ntchito ndipo ndizofunikira kuti voltage zoikamo ziyenera kufanana, ndiye zindikirani kuti LVD voltage iyenera kukhazikitsidwa ku mtengo wapamwamba kuposa LVR voltage.
• Chithunzi cha LVDtagKukhazikitsa kwa e kumasiyana ndi zofunikira zosiyanasiyana zamalonda. Ngati ikhazikitsidwa ngati 2.2V ya example, ndiye LVD voltage ya ntchito iliyonse idzasiyana ndi pafupifupi 2.2V ± 5%. Zolemba zaumwini ziyenera kufufuzidwa mosamala pasadakhale.
• Nthawi ya parameter TLVR ya VLVR idzasiyana chifukwa cha njira zosiyanasiyana. Kuti mumve zambiri zamagawo a DC/AC onetsani tsatanetsatane.
• Pambuyo pa LVR, pamene VDD voltage> 0.9V, mfundo za Memory Data sizisintha. Pamene VDD voltage ndipamwamba kuposa LVR kachiwiri, dongosolo lidzayambiranso ntchito popanda kufunikira kusunga magawo a RAM. Komabe ngati VDD ili yotsika kuposa 0.9V, makinawo sangasunge zikhalidwe za Memory Memory komanso pomwe VDD vol.tage ndi yokweranso kuposa LVR voltage, Power On Reset idzachitidwa pa dongosolo.
• Ntchito ya LVR ndi voltagKusankhidwa kwa ma MCU ena kumayendetsedwa kuchokera pazosintha mu HT-IDE3000. Akasankhidwa, sangasinthidwe pogwiritsa ntchito mapulogalamu.

Mapeto

Cholemba ichi chayambitsa ntchito za LVD ndi LVR zoperekedwa mu Holtek 8-bit Flash MCUs. Mukagwiritsidwa ntchito moyenera, ntchito za LVD ndi LVR zitha kuchepetsa magwiridwe antchito achilendo a MCU pomwe magetsitage ndi yosakhazikika, motero imapangitsa kuti zinthu zizikhazikika. Kuonjezera apo, zolemba zina ndi njira zogwiritsira ntchito LVD ndi LVR zafotokozedwa mwachidule kuti athandize ogwiritsa ntchito LVD ndi LVR mosavuta.

Mabaibulo ndi Zambiri Zosintha

Chodzikanira

Zidziwitso zonse, zizindikiro, ma logo, zithunzi, makanema, zomvera, maulalo ndi zinthu zina zomwe zikuwonekera pa izi. webmalo ('Chidziwitso') ndi ongogwiritsa ntchito okha ndipo angasinthidwe nthawi ina iliyonse popanda chenjezo komanso mwakufuna kwa Holtek Semiconductor Inc. ndi makampani ogwirizana nawo (pambuyo pake 'Holtek', 'kampani', 'ife', ' ife' kapena 'athu'). Pamene Holtek amayesetsa kuonetsetsa kuti Mauthengawa ndi olondola pa izi webTsambali, palibe chitsimikizo chodziwika kapena choperekedwa ndi Holtek kuti Chidziwitsocho chikhale cholondola. Holtek sadzakhala ndi mlandu pa zolakwika zilizonse kapena kutayikira.
Holtek sadzakhala ndi mlandu pazowonongeka zilizonse (kuphatikiza koma osati kokha ku kachilombo ka kompyuta, zovuta zamakina kapena kutayika kwa data) zilizonse zomwe zingachitike pogwiritsa ntchito kapena kugwiritsa ntchito izi. webtsamba ndi gulu lililonse. Pakhoza kukhala maulalo m'derali, zomwe zimakupatsani mwayi wochezera webmasamba amakampani ena. Izi webmalo sakulamulidwa ndi Holtek. Holtek sadzakhala ndi udindo uliwonse kapena chitsimikizo pa Chidziwitso chilichonse chomwe chikuwonetsedwa pamasamba otere. Ma hyperlink ndi ena webmasamba ali pachiwopsezo chanu.

Kuchepetsa Udindo
Mulimonse momwe zingakhalire, kampani sifunika kutenga udindo pakutayika kapena kuwonongeka kulikonse komwe munthu amabwera webtsamba mwachindunji kapena mwanjira ina ndipo amagwiritsa ntchito zomwe zili, zambiri kapena ntchito pa webmalo.
Lamulo Lolamulira
Chodzikanirachi chikutsatiridwa ndi malamulo a Republic of China komanso pansi pa ulamuliro wa Khothi la Republic of China.
Kusintha kwa Chodzikanira
Holtek ali ndi ufulu wosintha Chodzikanira nthawi iliyonse kapena popanda chidziwitso, zosintha zonse zimagwira ntchito mukangotumiza ku webmalo.

Zolemba / Zothandizira

Malangizo a HOLTEK HT8 MCU LVD LVR [pdf] Malangizo HT8, MCU LVD LVR Maupangiri Ogwiritsa Ntchito, Malangizo Ogwiritsira Ntchito, HT8, MCU LVD LVR

Maumboni

• Buku Logwiritsa Ntchito