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what is arm

Discussion in 'AVR' started by jidan, Feb 2, 2014.

  1. jidan

    jidan Member

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    what is arm I have searched on internet but still confused IS it microcontroller or microprocessor
     
  2. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

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  3. Ian Rogers

    Ian Rogers Super Moderator Most Helpful Member

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    Isn't ARM the core.... essentially a microprocessor... Compaines that make embedded microcontrollers use different ARM cores... Ie.. ARM9, Cortex etc...

    I think its like Ti taking on the 8051 core and implementing oodles of preripherals..

    Kind of a hybrid, so to speak.
     
  4. dave

    Dave New Member

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  5. JimB

    JimB Super Moderator Most Helpful Member

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    Maybe this clarifies things a bit:
    http://en.wikipedia.org/wiki/ARM_Holdings

    JimB
     
  6. jidan

    jidan Member

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    that means it may be controller or processor depend upon design
     
  7. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

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    hi,
    I have always considered that a Processor is as defined in a CPU, ie: the Central Processor Unit.
    A Z80 is an example of a Processor [CPU]
    All the Peripherals, ROM, RAM etc, being connected externally to the CPU [ Processor]

    A micro controller or PIC in addition to its own internal CPU has the Memory block and the Peripherals in the same package.
    A 18F2550 is an example of a micro-controller.

    E
     
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  8. Ian Rogers

    Ian Rogers Super Moderator Most Helpful Member

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    As Eric said.... All MCU's have a CPU inside.... ARM can be a standalone processor or can be contained within a MCU.

    Nxp LPC2148
    So the answer to your question is ARM is a microprocessor...
     
  9. NorthGuy

    NorthGuy Well-Known Member

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  10. KeepItSimpleStupid

    KeepItSimpleStupid Well-Known Member Most Helpful Member

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  11. Little Ghostman

    Little Ghostman Well-Known Member Most Helpful Member

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    Great Question, I use very old HP ipaq's that have ARM processors, I also use energy micro 32bit ARM microprocessor's. So I think of it as a processor core, often used with a mix of different things to turn it into a microprocessor.
    Whatever it is, they sure are amazing to use! I have a energy micro 35DK dev board with a ARM32 bit processor.
    Some of the demo's that came with it are gobsmacking!! it has a inbuilt energy meter so in real time while running or debugging a program you get a live readout of how much current your using, it goes down into the nA region.
    Is realy cool to see some the stuff it can do, ticking along drawing less than 1mA and running at 1% of cpu.
     
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  12. jidan

    jidan Member

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    there are many version of ARM processor but all implement on ARM architecture

    what is SHARC processor in embedded system

    how does SHARC processor different from ARM processor
     

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