Internal RC

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Hi
Until now I have used the software clock signal (3.68MHz). Now I want to change it to the internal RC oscillator (eg. 8MHz). When I programme my device with AVR Studio I select under the "Fuses" tab the "Int. RC Osc. 8MHz;Start-up time: 6CK+64ms" from the list which available at the CKSEL. Then I click to the Program and the Verify button. It seems to be work, and there is an OK! caption under.
My question is that, now the device works with 8Mhz, or I have to do something else as well???

I have an atmel32 with STK500 board and JTAG ICE mkII.
Probably It is a very newbie questions, sorry for that
thanks for your help

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Quote:

My question is that, now the device works with 8Mhz, or I have to do something else as well???

Nope that should do it - if you have a flashing LED it should be flashing about twice the speed it was at 3.6 now.