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How do you select the right processor?

Ghamble

Hi All,

 

I've always been interested in trying to find a solid answer to the question "how do you choose the right processor for your application?" and it recently occured to me that element-14 and the e-fourteeners are well placed to try to provide an answer.

 

I'd like to to hear from people how they go about choosing a processor, whats the methodology you use.

 

Is it a question of familiarity with a supplier or a particular suite of development tools?

 

Do you start with a more powerful processor for prototyping and then downsize later?

 

Supported I/O is going to be a contributor, do you go for just what you need, or build in some future proofing?

 

I would like to be able to get to a state were a wiki doc could be put together with a set of general guidelines, but for now I'm just curious to hear from others to see how people tackle this problem.

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  • Hi Ghamble,

     

    I don't believe in choosing the 'right' component, but the solution should be a near optimum. I for once, are very pleased with the range of products of Microchip and stick with those devices as my knowlegde base is ten times more valuable than let's say the price of processor X from company Y.  So far, Microchip did not dissapoint me and i love their support and easy parts acces. Sometimes i get sampels for free, also demo boards and lot's of products are available at Farnell. Maybe more important is the wide spread knowlegde database on PICmicro around the globe and people who are willing to share their knowlegde. This is not possible in an corporate invironment, because of competition aspects.

     

    Best regards,

     

    Enrico Migchels

    Power Supply Design Engineer

    Heliox B.V.

    Best - The Netherlands

    www.heliox.nl

  • in reply to enrico.migchels

    Hi everybody!

     

    I agree that there is no absolute rule for choosing a processor.

    I'm mostly in the prototype business, which means that the cost is not a primary concern, but at the end

    of the day, a prototype is supposed to become a product...

    Choosing the final device can yield several good candidates with close characteristics.

    I have created a utility that summarizes the differences between chips. It works only for TI MCUs,

    but if it can help somebody, here it is: click here.

     

    Pascal

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  • in reply to enrico.migchels

    Hi everybody!

     

    I agree that there is no absolute rule for choosing a processor.

    I'm mostly in the prototype business, which means that the cost is not a primary concern, but at the end

    of the day, a prototype is supposed to become a product...

    Choosing the final device can yield several good candidates with close characteristics.

    I have created a utility that summarizes the differences between chips. It works only for TI MCUs,

    but if it can help somebody, here it is: click here.

     

    Pascal

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