pic16f819 interface with computer serial port

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d@nny

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is pic16f819 able to directly connect with pc serial port or i need the ic as max232?
 

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In general the serial port standard in the PC side needs higher voltages (positive & negative) to work so you need some king of interface between the pc and mcu

Alex
 

alexan_e said:
In general the serial port standard in the PC side needs higher voltages (positive & negative) to work so you need some king of interface between the pc and mcu

Alex
Click to expand...

Not only does the PC need higher voltages ranges, both negative and positive, as Alex pointed out.

Remember, the PIC itself will be subjected to these extraordinarily HIGH POSITIVE and NEGATIVE Voltages from the PC's RS-232 Port.

d@nny said:
is pic16f819 able to directly connect with pc serial port or i need the ic as max232?
Click to expand...

Therefore, directly connecting a PIC to a PC's RS-232 Port could have disastrous results for the PIC, both in exceeding pin voltage and current levels.

In short, doing so could easily result in a damage/dead PIC.
 
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