Boto e Ekelitsoeng ea PORT Expander MCP23S17
Bukana ea Mosebelisi
PORT Expander TM
Mekhoa eohle ea nts'etsopele ea Mikroelektronika e na le palo e kholo ea li-peripheral modules tse atolosang mefuta e mengata ea lisebelisoa tsa microcontroller le ho etsa hore mokhoa oa tlhahlobo ea lenaneo o be bonolo. Ntle le li-module tsena, hoa khoneha ho sebelisa li-module tse ling tse ngata tse hokahaneng le sistimi ea nts'etsopele ka lihokelo tsa port tsa I/O. Tse ling tsa li-module tsena tse eketsehileng li ka sebetsa e le lisebelisoa tse ikemetseng ntle le ho hokahanngoa le microcontroller.
PORT Expander eketsehileng Board
Boto ea tlatsetso ea PORT Expander e fana ka katoloso e bonolo ea boema-kepe ba I / O ho sebelisa sebopeho se tloaelehileng sa serial joalo ka SPI. Khokahano le sistimi ea nts'etsopele e thehiloe ka ho hokahanya lihokelo tsa banna ba 2 × 5 botong e eketsehileng ho koung e loketseng ho sistimi ea nts'etsopele. Ho ipapisitsoe le sistimi ea nts'etsopele e sebelisoang, hoa hlokahala ho khetha e 'ngoe ea lihokelo tse tharo tse fanoeng botong e eketsehileng. Bakeng sa litsamaiso tsa ntlafatso tsa dsPIC, sehokelo sa CN1 (dsPIC) se hoketsoe boema-kepeng ba PORTF. Bakeng sa litsamaiso tsa ntlafatso tsa AVR-8051, sehokelo sa CN2 (AVR-8051) se hokahane le boema-kepe ba PORTB. Sistimi ea ntlafatso ea PIC e sebelisa boema-kepe ba PORTC ho theha khokahano le sehokelo sa CN3 (PIC) botong e eketsehileng. Boto ea PORT Expander e fana ka likou tse peli tse eketsehileng PORTA le PORTB bakeng sa sistimi ea ntlafatso eo e hokahaneng le eona.
Boto e eketsehileng ea PORT Expander e sebelisa SPI serial interface ho buisana le microcontroller e fanoeng tsamaisong ea ntlafatso eo e hokahaneng le eona. Likou tse ling li amohela / li romella data ka mokhoa o ts'oanang, ho bolelang hore hoa hlokahala ho e fetolela ho sebopeho sa serial. Potoloho ea MCP23S17, e fanoeng ka boto e eketsehileng, e sebelisoa ho fetolela data e amohetsoeng ho tsoa ho lithapo tse ling tse 16 le ho e fetisetsa ho microcontroller ka lithapo tse peli. Advantage ea tšokoloho e joalo e hlakile. Ho e-na le mela e 16, boto e eketsehileng e hokahane le microcontroller ka mela e mene feela e tsejoang e le melapo ea ho amohela / ho fetisa le mela e 'meli ea taolo.
Mosebetsi oa lithapo tse fanoeng ho lihokelo tsa CN1, CN2 le CN3 li tjena:
MOSI- Sephetho sa Master, Kenyeletso ea Makhoba (sephetho sa microcontroller, kenyeletso ea MCP23S17)
MISO - Kenyelletso e Ntle, Sephetho sa Makhoba (microcontroller onput, MCP23S17 sephetho)
TS'ELISO - Serial Clock (letšoao la oache ea microcontroller)
CS - Khetho ea Chip (ho nolofalletsa phetisetso ea data)
INTA– Thibela phini
INTB– Thibela phini
Phetiso ea data ka MOSI le MISO mela e etsoa ka nako e le 'ngoe ka mahlakore ka bobeli. Mohala oa MOSI o sebelisetsoa ho fetisetsa data ho tloha ho microcontroller ho ea ho expander ea port, athe mohala oa MISO o sebelisetsoa ho fetisetsa data ho tloha ho port expander ho ea ho microcontroller. Microcontroller e qala ho fetisoa ha data ha phini ea CS e khannoa tlaase (0) ka ho romela letšoao la oache (SCK).
Li-Jumpers J2, J1 le J0 li sebelisoa ho fumana aterese ea hardware ea port expander. Ha li behiloe sebakeng se tšoailoeng 1, aterese ke 1 le ho fapana ha li behiloe sebakeng se tšoailoeng 0, aterese ke 0. Li-Jumpers J2, J1 le J0 li behiloe sebakeng se tšoailoeng 0 (logic 0) ka ho sa feleng.
Setšoantšo sa 2: PORT Expander boto e eketsehileng
Setšoantšo sa 3: PORT Expander boto e eketsehileng e amanang le tsamaiso ea ntlafatso E jarollotsoe ho tloha ho Arrow.com.
MicroElektronika
E jarollotsoe ho tsoa Arrow.com.
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Litokomane / Lisebelisoa
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MicroE PORT Expander Board MCP23S17 [pdf] Bukana ea Mosebelisi PORT Expander, Boto e Eketsehileng, MCP23S17, PORT Expander Board, Boto e Ekelitsoeng ea PORT MCP23S17 |
