SPI Interface Yog Dab Tsi? SPI Ua Haujlwm Li Cas?

SPI Interface Yog Dab Tsi? SPI Ua Haujlwm Li Cas?

SPI sawv cev rau Serial Peripheral interface thiab, raws li lub npe qhia, yog ib qho serial peripheral interface. Motorola tau txhais thawj zaug ntawm nws cov MC68HCXX-series processors.SPI yog lub tsheb npav sib txuas lus ceev ceev, puv-duplex, sib dhos ua ke, thiab tsuas yog siv plaub kab ntawm tus pin chip, txuag tus pin ntawm tus chip, thaum txuag qhov chaw rau PCB layout, muab kev yooj yim, feem ntau siv hauv EEPROM, FLASH, lub moos tiag tiag, AD converter, thiab ntawm lub processor teeb liab digital thiab lub decoder teeb liab digital.

Lub SPI muaj ob hom master thiab slave. Ib lub SPI kev sib txuas lus yuav tsum muaj ib (thiab tsuas yog ib qho) master device thiab ib lossis ntau dua slave devices. Lub main device (Master) muab lub moos, slave device (Slave), thiab SPI interface, uas txhua yam pib los ntawm lub main device. Thaum muaj ntau lub slave devices, lawv raug tswj los ntawm cov chip signals.SPI yog ib qho full-duplex, thiab SPI tsis txhais qhov txwv ceev, thiab kev siv dav dav feem ntau tuaj yeem ncav cuag lossis tshaj 10 Mbps.

Feem ntau, SPI interface siv plaub kab teeb liab rau kev sib txuas lus:

SDI (Nkag Cov Ntaub Ntawv), SDO (Tso Tawm Cov Ntaub Ntawv), SCK (Moos), CS (Xaiv)

MISO:Tus pin nkag/tawm ntawm lub cuab yeej tseem ceeb. Tus pin xa cov ntaub ntawv hauv hom thiab tau txais cov ntaub ntawv hauv hom tseem ceeb.

MOSI:Tus pin tso zis/nkag ntawm lub cuab yeej tseem ceeb. Tus pin xa cov ntaub ntawv hauv hom tseem ceeb thiab tau txais cov ntaub ntawv los ntawm hom.

SCLK:Lub teeb liab moos serial, tsim los ntawm cov khoom siv tseem ceeb.

CS / SS:Xaiv cov teeb liab los ntawm cov khoom siv, tswj los ntawm cov khoom siv tseem ceeb. Nws ua haujlwm ua "chip selection pin", uas xaiv cov cuab yeej qhev tshwj xeeb, tso cai rau cov cuab yeej tseem ceeb sib txuas lus nrog cov cuab yeej qhev tshwj xeeb thiab zam kev tsis sib haum xeeb ntawm cov kab ntaub ntawv.

Nyob rau xyoo tas los no, kev sib xyaw ua ke ntawm SPI (Serial Peripheral Interface) thev naus laus zis thiab OLED (Organic Light-Emitting Diode) cov zaub tau dhau los ua qhov chaw tseem ceeb hauv kev lag luam thev naus laus zis. SPI, paub txog nws qhov kev ua haujlwm siab, kev siv hluav taws xob tsawg, thiab kev tsim kho vajtse yooj yim, muab kev xa xov tooj ruaj khov rau OLED cov zaub. Lub caij no, OLED cov ntxaij vab tshaus, nrog lawv cov khoom siv tus kheej, qhov sib piv siab, lub kaum sab xis dav, thiab cov qauv tsim ultra-thin, tab tom hloov cov ntxaij vab tshaus LCD ib txwm muaj, dhau los ua qhov kev daws teeb meem zoo tshaj plaws rau cov xov tooj ntse, cov khoom hnav tau, thiab cov khoom siv IoT.