PORT Expander Board Zowonjezera MCP23S17
Manual wosuta
PORT Expander TM
Machitidwe onse a chitukuko cha Mikroelektronika ali ndi ma modules ambiri ozungulira omwe akuwonjezera kuchuluka kwa mapulogalamu a microcontroller ndikupanga njira yoyesera pulogalamu mosavuta. Kuphatikiza pa ma module awa, ndizothekanso kugwiritsa ntchito ma module ochulukirapo olumikizidwa ndi dongosolo lachitukuko kudzera pa zolumikizira madoko a I/O. Ena mwa ma module owonjezerawa amatha kugwira ntchito ngati zida zoyimirira zokha popanda kulumikizidwa ndi microcontroller.
Bungwe Lowonjezera la PORT Expander
Bungwe lowonjezera la PORT Expander limapereka kufalikira kwa doko la I / O kosavuta pogwiritsa ntchito mawonekedwe amtundu wamtundu monga SPI. Kulumikizana ndi dongosolo lachitukuko kumakhazikitsidwa mwa kugwirizanitsa 2 × 5 zolumikizira zachimuna pa bolodi yowonjezera ku doko loyenera pa dongosolo lachitukuko. Malingana ndi dongosolo lachitukuko lomwe likugwiritsidwa ntchito, m'pofunika kusankha chimodzi mwa zolumikizira zitatu zomwe zimaperekedwa pa bolodi yowonjezera. Pamakina otukula a dsPIC, cholumikizira cha CN1 (dsPIC) chimalumikizidwa ndi doko la PORTF. Kwa machitidwe a chitukuko cha AVR-8051, cholumikizira cha CN2 (AVR-8051) chimalumikizidwa ndi doko la PORTB. Machitidwe a chitukuko cha PIC amagwiritsa ntchito doko la PORTC kuti akhazikitse mgwirizano ndi cholumikizira cha CN3 (PIC) pa bolodi yowonjezera. Bungwe la PORT Expander limapereka madoko awiri owonjezera a PORTA ndi PORTB pamakina otukuka omwe amalumikizidwa.
Bungwe lowonjezera la PORT Expander limagwiritsa ntchito mawonekedwe amtundu wa SPI kuti alankhule ndi microcontroller yoperekedwa pa dongosolo lachitukuko lomwe limalumikizidwa. Madoko owonjezera amalandira / kutumiza deta mumtundu wofananira, zomwe zikutanthauza kuti ndikofunikira kuti musinthe kukhala mawonekedwe a serial. Dera la MCP23S17, loperekedwa pa bolodi lowonjezera, limagwiritsidwa ntchito kutembenuza zomwe zalandilidwa kuchokera ku mapini 16 owonjezera ndikuzipereka kwa microcontroller kudzera pazikhomo ziwiri. Advantage za kutembenuka koteroko ndi zoonekeratu. M'malo mwa mizere ya 16, bolodi yowonjezera imagwirizanitsidwa ndi microcontroller kudzera mizere inayi yokha yomwe imadziwika kuti mizere yolandila / kutumiza ndi mizere iwiri yolamulira.
Ntchito ya zikhomo zoperekedwa pa zolumikizira CN1, CN2 ndi CN3 ndi motere:
MOSI- Kutulutsa Kwanzeru, Kulowetsa Akapolo (kutulutsa kwa microcontroller, kulowetsa kwa MCP23S17)
MISO - Kulowetsa Kwaukadaulo, Kutulutsa Akapolo (kutulutsa kwa microcontroller, kutulutsa kwa MCP23S17)
SCK - Serial Clock (chizindikiro cha wotchi ya microcontroller)
CS - Chip Sankhani (kutumiza kwa data kuyatsa)
INTA- Dulani pini
Mtengo wa INTB- Dulani pini
Kutumiza kwa data kudzera pa mizere ya MOSI ndi MISO kumachitika nthawi imodzi mbali zonse ziwiri. Mzere wa MOSI umagwiritsidwa ntchito kutumiza deta kuchokera ku microcontroller kupita ku port expander, pamene mzere wa MISO umagwiritsidwa ntchito kusamutsa deta kuchokera ku port expander kupita ku microcontroller. The microcontroller imayamba kutumiza deta pamene pini ya CS imayendetsedwa pansi (0) potumiza chizindikiro cha wotchi (SCK).
Jumpers J2, J1 ndi J0 amagwiritsidwa ntchito kudziwa adilesi ya hardware ya port expander. Akayikidwa pamalo olembedwa 1, adilesi ndi 1 ndipo mosiyana akayikidwa pamalo olembedwa 0, adilesi ndi 0. Jumpers J2, J1 ndi J0 amayikidwa pamalo olembedwa 0 (logic 0) mwachisawawa.
Chithunzi 2: PORT Expander bolodi yowonjezera
Chithunzi 3: PORT Expander bolodi yowonjezera yolumikizidwa ku dongosolo lachitukuko Lotsitsidwa kuchokera ku Arrow.com.
Chithunzi cha MicroElektronika
Dawunilodi kuchokera Arrow.com.
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