SPI Interface yog dab tsi? SPI ua haujlwm li cas?

SPI Interface yog dab tsi? SPI ua haujlwm li cas?

SPI stands rau Serial Peripheral interface thiab, raws li lub npe qhia, serial peripheral interface. Motorola yog thawj zaug txhais ntawm nws MC68HCXX-series processors.SPI yog lub tsheb loj ceev, puv duplex, synchronous kev sib txuas lus tsheb npav, thiab tsuas yog tuav plaub kab ntawm lub nti tus pin, txuag tus pin ntawm lub nti, thaum txuag chaw rau PCB layout, muab kev yooj yim, feem ntau yog siv hauv EEPROM, FLASH, moos real-time, AD converter, thiab nruab nrab ntawm cov teeb liab processor thiab digital teeb liab decoder.

SPI muaj ob hom tswv thiab qhev. Ib qho kev sib txuas lus SPI yuav tsum suav nrog ib qho (thiab tsuas yog ib qho) tus tswv cuab yeej thiab ib lossis ntau cov khoom siv qhev. Cov cuab yeej tseem ceeb (Master) muab lub moos, cov cuab yeej qhev (Slave), thiab SPI interface, uas txhua tus pib los ntawm lub ntsiab ntaus ntawv. Thaum muaj ntau tus qhev pab kiag li lawm, lawv tau tswj hwm los ntawm cov cim nti.SPI yog ib qho puv-duplex, thiab SPI tsis txhais qhov kev txwv ceev, thiab kev siv dav dav tuaj yeem ncav cuag lossis ntau tshaj 10 Mbps.

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

SDI (Data Entry), SDO (Cov ntaub ntawv tso zis), SCK (Tsev), CS (Xaiv)

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

MOSI:Primary Device Output/input pin ntawm lub cuab yeej. Tus pin xa cov ntaub ntawv hauv hom tseem ceeb thiab tau txais cov ntaub ntawv los ntawm hom.

SCLK:Serial moos teeb liab, tsim los ntawm cov cuab yeej tseem ceeb.

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

Nyob rau hauv xyoo tas los no, kev sib xyaw ntawm SPI (Serial Peripheral Interface) thev naus laus zis thiab OLED (Organic Light-Emitting Diode) cov lus tau dhau los ua qhov tseem ceeb hauv kev lag luam thev naus laus zis. SPI, paub txog nws cov kev ua haujlwm siab, kev siv hluav taws xob tsawg, thiab kev tsim kho vajtse yooj yim, muab cov teeb liab ruaj khov rau OLED cov lus qhia. Lub caij no, OLED cov ntxaij vab tshaus, nrog rau lawv tus kheej-emissive zog, siab sib piv piv, dav saib lub kaum ntse ntse, thiab ultra-thin designs, yog nce hloov ib txwm LCD cov ntxaij vab tshaus, dhau los ua cov kev xaiv zaub daws teeb meem rau smartphones, wearables, thiab IoT li.