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Posted: **Mon Jan 18, 2010 4:48 am**

After discovering documentation i came to the conclusion that UART(CON1 and CON2 on mini2440 board) working levels are +-3.3V. Is it right?

Posted: **Mon Jan 18, 2010 2:59 pm**

The uart's coming from the S3C2440 are 3.3v
The physicalserial port header on the mini24440 goes thru a level shifter (max232) which is +-12v.

Posted: **Tue Jan 19, 2010 2:26 am**

I know that physical port header works through level converter. I want to connect BT-device which works with +-3.3V TTL directly to UART, you confirm my conclusion, thanks a lot.

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UART 3.3V or 5.0V?

UART 3.3V or 5.0V?

Re: UART 3.3V or 5.0V?

Re: UART 3.3V or 5.0V?