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

Tlhaloso

PCA9554 le PCA9554A ke lisebelisoa tsa CMOS tse 16 tse fanang ka li-bits tse 8 tsa General Purpose parallel Input/Output (GPIO) katoloso bakeng sa lits'ebetso tsa I2C-bus/SMBus 'me li ile tsa ntlafatsoa ho ntlafatsa lelapa la NXP Semiconductors la I2C-bus I/O expander.Lintlafatso li kenyelletsa bokhoni bo phahameng ba ho khanna, mamello ea 5 VI / O, phepelo e tlase ea hajoale, tlhophiso ea I / O ea motho ka mong, maqhubu a oache ea 400 kHz, le liphutheloana tse nyane.Li-expander tsa I / O li fana ka tharollo e bonolo ha ho hlokahala I / O e eketsehileng bakeng sa li-switches tsa matla tsa ACPI, li-sensor, li-buttons, li-LED, li-fan, joalo-joalo.PCA9554/PCA9554A e na le rejisetara ea 8-bit Configuration (Khetho ea Kenyelletso kapa Sephetho);Rejisetara ea Boema-kepe ba 8-bit, Rejisetara ea Boema-kepe ba 8-bit le Rejisetara ea 8-bit Polarity Inversion (ts'ebetso e sebetsang e PHAHAMENG kapa e sebetsang e TLASE).Monghali oa sistimi a ka thusa li-I/Os joalo ka li-input kapa liphetho ka ho ngolla li-I/O configuration bits.Lintlha tsa tlhahiso kapa tlhahiso e 'ngoe le e 'ngoe e bolokoa ka har'a Rejisetara e tsamaellanang le Boema-kepe ba Tlhahiso.Polarity ea rejisetara e baloang e ka fetoloa ka rejistara ea Polarity Inversion.Lirekoto tsohle li ka baloa ke mookameli oa sistimi.Leha aterese ea pin-to-pin le I2C-bus e tsamaisana le letoto la PCF8574, liphetoho tsa software lia hlokahala ka lebaka la lintlafatso mme li tšohloa ho Application Note AN469.PCA9554/PCA9554A e sitisang phalliso ea metsi a bulehileng e kentsoe tšebetsong ha boemo bofe kapa bofe ba ho kenya bo fapana le boemo ba eona ba ngoliso ea Input Port mme e sebelisetsoa ho bontša mong'a sistimi hore boemo ba ho kenya bo fetohile.Matla a ho reset e beha lirekoto ho boleng ba tsona ba kamehla mme e qala mochini oa boemo ba sesebelisoa.Lithako tse tharo tsa hardware (A0, A1, A2) li fetola aterese e tsitsitseng ea I2C-bese 'me li lumella lisebelisoa tse fihlang ho tse robeli ho arolelana I2C-bus/SMBus e tšoanang.PCA9554A e ts'oana le PCA9554 ntle le hore aterese e tsitsitseng ea I2C-bese e fapane e lumella lisebelisoa tse fihlang ho tse leshome le metso e tšeletseng (tse robeli ho e 'ngoe le e 'ngoe) ho I2C-bus/SMBus e tšoanang.