ATmega8 - Internal RC Oscillator

[pomprocker]

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.

[superchiku]

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

[Steel_monkey]

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.

[Admin]

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