When are we getting higher frequencies? :)

arro239 · ‎2013-08-25

Posted on August 25, 2013 at 21:51

Looks like 168MHz Cortex-M4 was announced two years ago. Have ST announced any faster controllers/discovery boards since?

Tesla DeLorean · ‎2013-08-25

Posted on August 25, 2013 at 22:17

They have a geometry shrink on the table.

http://www.st.com/web/catalog/mmc/FM141/SC1169/SS1577/LN1806

2MB of FLASH, and 180 MHz

But, honestly if you want speed there are routes that get you there, and the M3/M4 aren't it. You need something with fast, and native SDRAM, DDRx access, and caching architectures which the the Cortex-Mx parts don't address. The FPU only supports 32-bit floats, there's no MMU, and a restrictive memory map.

http://www.st.com/web/catalog/mmc/FM169/SC1156

For cheap and fast processors look at what's being used in phones and tablets, a lot of that business has migrated to China, and the parts have a very short life-cycle.

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postoffice33 · ‎2013-08-25

Posted on August 26, 2013 at 02:03

I hope this is going to happen soon

http://best5.it

Anyway I share that using

http://www.st.com/web/catalog/mmc/FM169/SC1156

should be ok.

Tesla DeLorean · ‎2013-08-25

Posted on August 26, 2013 at 02:47

Maybe it would be helpful to be specific about what you're doing, the kind of horse power you think you need, and what kind of frequency/bandwidth the processor/memory need to provide.

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Bill Lewis · ‎2013-08-26

Posted on August 26, 2013 at 20:43

Of course nothing there I'd ever be able to solder to a PCB.

emalund · ‎2013-08-27

Posted on August 27, 2013 at 14:20

Of course nothing there I'd ever be able to solder to a PCB.

yes, of course, if the package were such that you were ''ever be able to solder to a PCB'' you would get reflections of a magnitude that would kill the operation instantly.

''a wire is NOT a wire''

Erik

emalund · ‎2013-08-27

Posted on August 27, 2013 at 14:27

Of course nothing there I'd ever be able to solder to a PCB.

yes, of course, if the package were such that you were ''ever be able to solder to a PCB'' you would get reflections of a magnitude that would kill the operation instantly.

''a wire is NOT a wire''

Erik

Bill Lewis · ‎2013-08-27

Posted on August 27, 2013 at 17:44

The high frequencies involved are inside the chip. Running the current 168 MHz parts hand-soldered LQFPs is no problem.

emalund · ‎2013-08-27

Posted on August 27, 2013 at 22:16

<i>The high frequencies involved are inside the chip. Running the current 168 MHz parts hand-soldered LQFPs is no problem.</i>

re reflections etc who gives a hoot about the frequency, it is the associated rise and fall times <b>that do not change by using a lower frequency</b> that causes the reflections.

Erik