Microcontroller speed comparison

I know a direct comparison is hard to achieve, but does anybody know of a site that gives at least an idea of how the speed one microcontroller compares with another? AVR, H8 C166 etc.


Reply to
Ken Barlow
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For a first order approximation:

  1. Find out how many clock cycles are required per instruction cycle.
  2. How many instruction cycles are required for a "typical" non-branching instruction.
  3. What clock speeds are available for the processor.

That's a very rough gauge. Might also want to look into interrupt latency, stack depth, register layout, addressing modes, ...

Rich Webb   Norfolk, VA
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Rich Webb

Perhaps you will find something at the Embedded Microprocessor Benchmark Consortium:

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Reply to
Ralf Kern

Realize this is a "pro" microchip comparison, but go to the

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website and look up application note AN520.

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I for one would not recommend this site. Last time I looked they catered only for the latest MS Internet Explorer. When I asked them why they only supported Windows customers that are using MSIE, they said that they need the advanced features of MSIE. Such a Windows centric outfit cannot provide a balanced view on embedded systems in my opinion.

Regards Anton Erasmus

Reply to
Anton Erasmus

Hi, i saw comparison table for any processors&program for estimation on '

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' (reference not button, right )


Reply to

if your just looking for raw out fast and cheap, you cant go wrong with Scenix/Ubicom's SX chip. 75 MIPS, although the instruction set is PIC+.


Reply to

Hi Ken,

for high end architectures there is an Embedded Benchmarking Consortium

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Unfortunately all vendors post scores for thei high end embedded architectures and Atmel is not a member there at all. However, it is an interesting site!

From my past experience (worked a lot with Infineon C166 / several

8-bit and 16-bit architectures, the three you listed have a clear favorite, the C166 architecture with the new one clock core, called V2 from Infineon or Super10 from ST. This is the same core! An alternative could be to switch to ARM, e.g. the Philips devices LPC210x offer performance higher than the architectures listed at very similar, may be lower price (starting 10k I know a direct comparison is hard to achieve, but does anybody know
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