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

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PCA9554 thiab PCA9554A yog 16-pin CMOS li uas muab 8 khoom ntawm General Purpose parallel Input/Output (GPIO) expansion rau I2C-bus/SMBus applications thiab tau tsim los txhim kho NXP Semiconductors tsev neeg ntawm I2C-bus I/O expanders.Cov kev txhim kho muaj xws li muaj peev xwm tsav tau siab dua, 5 VI / O kam rau ua, txo cov khoom siv tam sim no, tus kheej I / O teeb tsa, 400 kHz moos zaus, thiab ntim me me.I/O expanders muab cov kev daws teeb meem yooj yim thaum xav tau ntxiv I/O rau ACPI fais fab hloov, sensors, laub khawm, LEDs, kiv cua, thiab lwm yam.PCA9554/PCA9554A muaj 8-ntsis Configuration register (Input lossis Output xaiv);8-ntsis Input Port register, 8-ntsis Output Port register thiab 8-ntsis Polarity Inversion register (active HIGH lossis active LOW operation).Tus tswv system tuaj yeem ua rau I / Os ua cov khoom nkag lossis cov khoom tawm los ntawm kev sau ntawv rau I / O cov khoom teeb tsa.Cov ntaub ntawv rau txhua qhov kev tawm tswv yim lossis cov khoom tso tawm yog khaws cia rau hauv qhov sib thooj Input Port lossis Output Port register.Lub polarity ntawm cov ntawv nyeem tuaj yeem hloov pauv nrog Polarity Inversion register.Tag nrho cov ntawv sau npe tuaj yeem nyeem los ntawm tus tswv system.Txawm hais tias tus pin-to-pin thiab I2C-tsheb npav chaw nyob sib haum nrog PCF8574 series, software hloov pauv yuav tsum tau ua los ntawm kev txhim kho thiab tau tham hauv Daim Ntawv Ceeb Toom AN469.PCA9554/PCA9554A qhib-drain interrupt output yog qhib thaum twg lub input lub xeev txawv los ntawm nws coj mus rau lub Input Port register state thiab yog siv los qhia rau lub system tswv hais tias ib tug input lub xeev tau hloov.Lub hwj chim-on pib dua teeb tsa cov ntawv sau npe rau lawv qhov tseem ceeb thiab pib ua lub xeev lub tshuab ntaus ntawv.Peb tus pins kho vajtse (A0, A1, A2) sib txawv ntawm qhov chaw nyob ruaj khov I2C-tsheb npav thiab tso cai rau yim yam khoom siv los qhia tib I2C-bus / SMBus.PCA9554A zoo ib yam rau PCA9554 tshwj tsis yog tias qhov chaw nyob ruaj khov I2C-tsheb npav sib txawv tso cai rau kaum rau ntawm cov khoom siv no (yim ntawm txhua tus) ntawm tib I2C-bus / SMBus.