Hi, I´m very new working with microcontrolers and I´m having a big problem. Only I want a Assembler code to transmite by RS232. I want use Internal RC oscilator ( 4Mhz), Asynchronous mode and URDE bit to know if transmit buffer is ready for new data. It would be very useful for me to get a very simple example in assembler code to do it.
Thank you very much and I apologize for my English.

 

See if the information here helps you out.

You will need to expand the "AVR ARCHITECTURE" section.

hgmjr

 

Hi hgmjr.Manny thanks for the answer, it was very useful. I could solve the problem using a 3.68 MHZ Xtal. Thank you.