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Why 72Mhz? #98

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Gregwar opened this issue Nov 5, 2014 · 3 comments
Closed

Why 72Mhz? #98

Gregwar opened this issue Nov 5, 2014 · 3 comments

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@Gregwar
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Gregwar commented Nov 5, 2014

Hello,
I'm wondering why so many STM32 based boards are running at 72Mhz
The PLL could technically go higher (or lower).. so why 72Mhz?

What will happen if I run my Maple Mini @128mhz for instance?
@mbolivar
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mbolivar commented Nov 5, 2014

AFAIK, the docs say it's not safe to run them any faster. A bunch of
STM32F4s run faster, though -- up to 168 MHz.

On Wed, Nov 5, 2014 at 6:01 PM, Grégoire Passault [email protected]
wrote:

Hello,
I'm wondering why so many STM32 based boards are running at 72Mhz
The PLL could technically go higher (or lower).. so why 72Mhz?

What will happen if I run my Maple Mini @128mhz for instance?

—
Reply to this email directly or view it on GitHub
#98.

@Gregwar
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Gregwar commented Nov 7, 2014

Ok
Thanks for this information

@bnewbold
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FWIW, some folks have tried overclocking chips to see what happens, even if it risks damaging hardware:

http://forums.leaflabs.com/topic.php?id=31
https://www.youtube.com/watch?v=TpMTaAvACcs

(this issue should probably be closed now)

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@mbolivar @bnewbold @Gregwar