If you use an external oscillator, and divide-by-8 internally, can you apply up to 160MHz on PB6? For example, can I use my 50MHz oscillator to clock my 328p @ 6250KHz? Note: when I say oscillator I don't mean resonator or crystal
asked Dec 20, 2015 at 12:41
1 Answer 1
No! 20 MHz max (Please see 8.8 External Clock, pp. 34). The 50MHz clock could be divided by 8 with a counter or the 150MHz clock by 16 with a faster counter.
Cheers!
answered Dec 20, 2015 at 13:46
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So divide-by-8 doesn't apply to external oscillators?Alexander M– Alexander M2015年12月20日 13:47:24 +00:00Commented Dec 20, 2015 at 13:47
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Exactly. The external clock is max 20 MHz and then it may be divided internally.Mikael Patel– Mikael Patel2015年12月20日 13:48:31 +00:00Commented Dec 20, 2015 at 13:48