is there a way to output system clock (16MHz) out? i know i can do CTC but that would only give 8Mhz at most.
Connect the Xtal2 output to a low current load buffer chip?
From the 328 datasheet:
Clock Output Buffer
The device can output the system clock on the CLKO pin. To enable the output, the CKOUT
Fuse has to be programmed. This mode is suitable when the chip clock is used to drive other circuits
on the system. The clock also will be output during reset, and the normal operation of I/O
pin will be overridden when the fuse is programmed. Any clock source, including the internal RC
Oscillator, can be selected when the clock is output on CLKO. If the System Clock Prescaler is
used, it is the divided system clock that is output.
I think this equates to AVR pin 14 = Arduino pin# 8.
Lefty
i did saw that documentation. So i guess i need to change fuse settings in boards.txt file and re-burn arduino bootloder. i'll see how it goes.