Which resonator is best

[T.Jackson]

In theory lifetime have to be the same, but yes the power consumption would be higher @10MHz than 5MHz.

In theory it's quite the opposite actually. More power being consumed equates to higher thermal dissipation, heat is what kills components.

[mackrackit]

In theory it's quite the opposite actually. More power being consumed equates to higher thermal dissipation, heat is what kills components.

With PICs I think the max life is calculated on the max speed.

My first industrial application with a PIC (BS2 actually) was back in 2000. The control panel is out side in the ambient Temperatures of SW Arizona. 120 F in the shade in the summer. The machine runs 6 days a week for 10 to 12 hours a day. Still going strong.

The only time I ever had a hot PIC was...well I do not like to talk about it

[T.Jackson]

You'll become a guaranteed billionaire if you can come up with a way to control the flow of electrons without wasting them (given off in the form of heat) -- which is once again what kills components. Many argue that it's not possible I don't know enough about science to give an opinion. But then again it is said that if anyone ever does it then most of the theories will need to be rewritten.

[mackrackit]

You'll become a guaranteed billionaire if you can come up with a way to control the flow of electrons without wasting them (given off in the form of heat) -- which is once again what kills components. Many argue that it's not possible I don't know enough about science to give an opinion. But then again it is said that if anyone ever does it then most of the theories will need to be rewritten.

My point was that if a PIC will last whatever the advertised time frame is at max speed. Then we say double that by slowing it down. I know I will not be around that long. So if the only reason to slow it down is to get more life, then why bother.

[T.Jackson]

You're absolutely correct bud. I think mister_e needs to go back and hit the books on some relatively "simple" stuff.

[mister_e]

Feel better now ?

[T.Jackson]

Feel better now ?

It's hard to argue that one isn't it? I don't go out of my way looking to pick people up on their errors, but I just couldn't ignore your comment, because it goes against the very foundation on which electronics is taught. You will never have a true appreciate of electronics without it. Just tell yourself that is was a typo -- because I do indeed believe that you are crafted with this "appreciation" and just happened to have overlooked it this time. My reasoning for saying this is because you haven't argued it.

[paul borgmeier]

Dave, I have never seen a max life value from Microchip for a PIC - do you have a reference for this?

Trent, I have never seen reference to microchip PIC life reduction if run at the high end of datasheet-listed allowed speeds (or voltages for that matter). Can you provide reference to this?

Trent, Would Einstein not have been correct with his theory of relativity if he had been challenged and had not replied? (ref: TRENT - My reasoning for saying this is because you haven't argued it.)