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  1. #1
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    dsp vs microcontroller

    What are the main advantages of DSP over a 32-bit microcontroller, whic also has a hardware multiplier and divider?
    Can a microcontroller not do the same job as DSP?

    •   Alt2nd October 2007, 08:06

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    dsp microcontroller

    exactly... I think, Microcontrollers don't have hardware accelerator to do the operations which DSP does. DSPs have Multiply & Accumalte unit (MAC). But microcontrollers don't have this Unit. So the difference between these two is how fast a piece of program is executed by the processor.
    And one more thing is Microcontrollers are used to do a particular task. for EX. these will be used in the application like washing machine, etc.. these microcontrollers are used in the small embedded systems.

    Now a days, we have some processors which can do the work of DSP with the same or faster than & efficiently. these are ARM processors.



    •   Alt3rd October 2007, 09:30

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  3. #3
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    microcontroller vs dsp

    Actually NEC micros have got HW accelerator and multiplier and more stuff on chip.
    And NEC 32 bit micros are actually more efficient then ARM.
    ARM is Von Newman architecture, where NEC is Harward and it takes only one clk cycle to fetch intruction from prog memory. It is also more efficient in terms of power consumption and MIPS.
    People are not aware of all these things, because ARM is extremely popular these days.



    •   Alt3rd October 2007, 09:35

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    arm vs dsp

    The dsPIC30's and low voltage dsPIC33's are also in that category of DSP engines, and aka microcontrollers.



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    dsp and microcontroller

    what kind of archtecture NEC micros are based on ?



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    arm microcontroller dsp

    Quote Originally Posted by drbizzarow
    what kind of archtecture NEC micros are based on ?
    Harward



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