Hello: Can I use my ARM CORTEX MO board to contert 5V to serial? will it be reliable? anyone already experienced it? can we interface them directly to a microcontroller without other components?
thanks
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The particular Cortex-M0 microcontroller was not mentioned - so you'll have to check its datasheet for details of what logic levels it uses!
NB: there are also 3.3V versions of the MAX232 available...
Converting 5V to serial is like converting 10 meters of rope into 100dBA.
But if you mean if it is possible to convert 5V logic-level serial data into RS232-level serial data, the answer is yes. You can use a MAX232 or similar to convert between the logic levels used by a 5V microcontroller and the logic levels used by the serial port of a PC.
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