memory

Hi dazheng,

Need to know ... what is EEPROM used in MCU for ?. I know EEPROM stand for Electrical Erasable Programming ROM but I need to know what's the purpose or where it going to be used in MCU?

I ask this because some of MCU dont have EEPROM ( EEPROM = 0 byte) ie 80NC535 & 80NC321 and the best thing about this MCU (without EEPROM) that's its cheaper than MCU with EEPROM. If it just minor used and can solve it in other method (and not effect my project) , I will use it as I need to lower the cost as much as possible.

Any instruction (ie in proton) that must be used on MCU with EEPROM ?

More explanation greatly appreciated.

Thanks

zuisti

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  • Hi "zuisti",

    She wants the EEPROM for keeping the program when changed.

    Will flash Magic Support this one ?

    I happen to have a few pieces of this controller!!

    I'm ready(?) with this work yet.
    It is a two mode (switchable) 8 char dot matrix display, working in Proteus, with source in javaC:
    I'm used a 89c734a.

    - in scrolling mode it has a buffer for a max 54 chars message. The speed is controllable.
    - in static mode it is cascadable, set the position in the received string with the pos. switch.

    The attached ZIP contains the orig. article (a PDF), as my start point. Please read it!

    Please post here your minds!

Reply
  • Hi "zuisti",

    She wants the EEPROM for keeping the program when changed.

    Will flash Magic Support this one ?

    I happen to have a few pieces of this controller!!

    I'm ready(?) with this work yet.
    It is a two mode (switchable) 8 char dot matrix display, working in Proteus, with source in javaC:
    I'm used a 89c734a.

    - in scrolling mode it has a buffer for a max 54 chars message. The speed is controllable.
    - in static mode it is cascadable, set the position in the received string with the pos. switch.

    The attached ZIP contains the orig. article (a PDF), as my start point. Please read it!

    Please post here your minds!

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