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89C51 interfacing with RS485 directly

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Paresh Prajapati

I want to connect SP485 ic with 89C51 microcontroller Rx and Tx pin. How I do this?

485 ic has 8 pins, RO, RE, DE, DI, GND, A, B, VCC. How I connect it? Please Give me idea. Thank u all.
 
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