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Author Topic: When your PIC Micro-controller just is not fast enough  (Read 1361 times)
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Lestat
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« on: December 14, 2012, 02:18:21 14:18 »

DCD have a 1.4 GHz PIC compatible micro-controller, I know we obviously have processors that can run at multiple GHz but I have never seen the need for the micro-controller to be able to run at quite that speed.

I can't see a need in any of the projects I am working on or looking at working on for a micro-controller to run at this speed, 32 MHz is more than enough for than enough for what I do. I am just curious if there is anything that you would have a use or a need for one of these? As currently I can't think of a use.

I have attached links to the website and the data sheet:

http://www.dcd.pl/ipcore/82/drpic166x/#info
http://ww1.microchip.com/downloads/en/DeviceDoc/41419A.pdf

Cheers

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Old_but_Alive
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« Reply #1 on: December 14, 2012, 03:22:48 15:22 »

very good, but is it nanoWatt  Cheesy
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Lestat
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« Reply #2 on: December 15, 2012, 02:56:42 14:56 »

I don't believe so but with the extra speed I am sure you can accept the extra power demands in some situations
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motox
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« Reply #3 on: December 15, 2012, 04:37:45 16:37 »

I didnít read the data sheet, but I guess itís a FPGA emulating a microcontroller. There is nothing new about it.
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Old_but_Alive
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« Reply #4 on: December 15, 2012, 05:30:53 17:30 »

its just  IP software, not a physical device.

I didn't want to criticize the original poster.

Its interesting, but not a real chip
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alexxx
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« Reply #5 on: December 15, 2012, 08:07:38 20:07 »

Quote from: Lestat
we obviously have processors that can run at multiple GHz but I have never seen the need for the micro-controller to be able to run at quite that speed.

Did you take a look at new generation ARM processors? Cortex-M4 for instance, delivers up to 200MHz frequency. I wouldn't have a problem laying my hands on a toy like that...!

http://www.arm.com/products/processors/cortex-m/cortex-m4-processor.php
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Gallymimu
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« Reply #6 on: December 16, 2012, 04:27:01 16:27 »

Have you ever run a pic core emulated in an FPGA?  Typically it is WAY slow with moderately fast FPGAs.
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flo0319
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« Reply #7 on: December 17, 2012, 08:31:31 20:31 »

@Lestat I think this DCD PIC core is about power consumption and not about speed, they can reach a X2 or X4 power consumption/ frequency.

For applications that require very high speed, you need to choose the right processor (maybe this type of app. needs floating point arithmetic, multiply with adds instruction, in generally DSP functionality )

 Also, I thing never can be enough speed for MCUs.
 
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