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We are currently working on a project on the above title...
We require which pin of pic16f77 supports max232(rs232)... at which pin RTC ds17885 can be connected...
Plz specify the sites where we can get more technical detail on SPI...
thanx
You can use any I/O pins for RS232 or SPI, as long as you use software routines to generate the interface. But the 16F877 has hardware USART and SPI interfaces, these use specific pins and are clearly explained in the datasheet. I would also advise reading the mid-range reference manual, this gives more details.
For RS232 you can consult my tutorials, where I show how to do both software and hardware RS232.
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