Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: pomprocker on April 14, 2008, 11:57:05 AM

Title: ATmega8 - Internal RC Oscillator
Post by: pomprocker on April 14, 2008, 11:57:05 AM

Can the ATmega8 do 8MHz on its own?
 ???
Or only with an external crystal?

I've done my reading of the datasheet but, I guess I can be dense at times.

Title: Re: ATmega8 - Internal RC Oscillator
Post by: superchiku on April 14, 2008, 12:18:35 PM

yes it has internal 8mhz rc oscillator , but i reccomend a crystal as it is more reliable in varying temperatures

Title: Re: ATmega8 - Internal RC Oscillator
Post by: Steel_monkey on April 14, 2008, 12:45:11 PM

Use crystal if dealing with UART or precise timing. Or if additional (>8 MHz) computational power is required. In other situations RC is the best choice.

Title: Re: ATmega8 - Internal RC Oscillator
Post by: Admin on April 20, 2008, 03:35:14 PM

Its all in the tutorials:
http://www.societyofrobots.com/microcontroller_uart_50_robot.shtml