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Which is better choice - Microcontroller with on-chip flash or external flash

Discussion in 'General Electronics' started by Ganesh Okade, Jan 3, 2004.

  1. Ganesh Okade

    Ganesh Okade Guest

    Dear Experts,
    I was wondering which is a better choice - choosing a
    microcontroller with on-chip flash or interfacing external flash to a
    microcontroller without flash. Please comment w.r.t the following:
    a) Which option turns out more expensive for a given flash size (say
    256K)
    b) Is the accessing of on-chip flash faster than accessing externally
    interfaced flash? If yes, why? Is not the on-chip flash also
    interfaced to the same data and address lines as would an external
    flash chip be interfaced?

    Thanks in advance.

    Ganesh
     
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