PCA9554D, 118 I / O Kwagura 8 I²C, SMBus 400 kHz 16-SO

Ibisobanuro

PCA9554 na PCA9554A nibikoresho 16-pin ya CMOS itanga bits 8 za Rusange Intego rusange igereranya Iyinjiza / Ibisohoka (GPIO) kwaguka kubikorwa bya I2C-bus / SMBus kandi byakozwe kugirango bitezimbere umuryango wa NXP Semiconductor umuryango wa I2C-bus I / O.Iterambere ririmo ubushobozi bwo gutwara hejuru, 5 VI / O kwihanganira, kugabanuka kugabanutse, kugiti cya I / O kugiti cye, inshuro 400 kHz yisaha, hamwe nububiko buke.Abaguzi ba I / O batanga igisubizo cyoroshye mugihe hakenewe I / O hakenewe amashanyarazi ya ACPI, sensor, gusunika buto, LED, abafana, nibindi.PCA9554 / PCA9554A igizwe na biti 8 bitondekanya Iboneza (Guhitamo cyangwa Ibisohoka);8-biti byinjira byinjira byinjira, 8-biti byinjira byinjira byinjira hamwe na 8-biti ya Polarity Inversion (ikora HIGH cyangwa ibikorwa BIKORWA BIKORWA).Sisitemu shobuja arashobora gukora I / Os nkibisubizo cyangwa ibisohoka mukwandika ibice bya I / O.Ibyatanzwe kuri buri cyinjijwe cyangwa ibisohoka bibikwa mubisobanuro byinjira byinjira cyangwa ibyasohotse byinjira.Ubuharike bwigitabo cyasomwe burashobora guhindurwa hamwe nigitabo cya Polarity Inversion.Ibitabo byose birashobora gusomwa na sisitemu umuyobozi.Nubwo pin-to-pin na I2C-bisi ya adresse ijyanye nurukurikirane rwa PCF8574, impinduka za software zirakenewe kubera ibizamurwa kandi byaganiriweho muri Note ya AN469.PCA9554 / PCA9554Isohora-imiyoboro ihagarika isohoka irakorwa mugihe leta iyinjiza yose itandukanye niyandikwa ryinjira ryinjira ryinjira kandi ikoreshwa mukwereka umuyobozi wa sisitemu ko leta yinjiza yahindutse.Imbaraga-on-reet ishyiraho rejisitiri kubiciro byabigenewe kandi itangiza imashini ya leta.Amapine atatu yibikoresho (A0, A1, A2) ahindura adresse I2C-bisi ihamye kandi yemerera ibikoresho bigera ku munani gusangira kimwe I2C-bus / SMBus.PCA9554A isa na PCA9554 usibye ko aderesi ya I2C-bisi ihagaze itandukanye yemerera abagera kuri cumi na batandatu muri ibyo bikoresho (umunani muri buri) kuri I2C-bus / SMBus imwe.