View Full Version : What are the downsides of a higher frequency PIC ?
AndrewC
- 6th February 2006, 20:34
Another newbie question: what is the flip side of say a 20MHz vs the standard (?) 4MHz ? Is the power consumption higher ? I guess you need PBP to make timing easier ?
Thanks, Andrew
picnaut
- 9th February 2006, 15:25
Hi,
Yeah, power consumption is going to be higher, but that's only a problem if you're application is battery powered. There may be some EMC issues too, but I doubt it. 20MHz is still a pretty low frequency.
Generally speaking though, if you don't need the speed, you may as well stick with a 4MHz crystal.
Cheers.
AndrewC
- 10th February 2006, 01:04
Hi,
Yeah, power consumption is going to be higher, but that's only a problem if you're application is battery powered. There may be some EMC issues too, but I doubt it. 20MHz is still a pretty low frequency.
Generally speaking though, if you don't need the speed, you may as well stick with a 4MHz crystal.
Cheers.
Yup, battery powered so I want to conserve power. Thanks, Andrew
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