RX / TX duo

[mbw123]

Sorry about the late post, and thanks for the help guys! Now I am thinking about the possibility of using the PIC16F628A instead of the 16f84. Will I be able to use the same code and schematics (I think that the PIC16F628A has an internal oscillator; will that mean I can eliminate the external oscillator?)? Thanks for the help!!

-Mike

[mister_e]

you can use the same schematic and probably the same code. But look at the the 16F628 Specs... it have an internal USART. More reliable than a software solution and produce a tighter code. HSERIN, HSEROUT that's it.

About skipping the external OSC... it could work good or not. Usually for serial comm i prefer to use a crystal for a better stability upon the temperature variation. The internal OSC is still a RC circuit... But try it before at slow baudrate and it could work great.