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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

Parents
  • Hi dazheng,

    sorry for disturbing your delopment but i need more help v fat plz.

    I also have have a small buzzer that emits many different sounds and, also, 3 error codes:

    1) Bip Bip Bip at 440Hz
    2) Biiip Biiip Biip at 700Hz
    3) Biiiip Biiip Biiiip at 1150Hz
    4) Biiiip Bip Biiip Biiiip at 1295Hz

    I want to decode these 4 error codes.
    I can't touch nothing (the buzzer, the amp, the sound) than I must use a small little mic to capture the sound/code.

    Besides, the buzzer is situated in a crowded place with many people that speaks, screams, cries etc.

    Is it possible to do?

    Thanks a lot and sorry, another time.

    zuisti

Reply
  • Hi dazheng,

    sorry for disturbing your delopment but i need more help v fat plz.

    I also have have a small buzzer that emits many different sounds and, also, 3 error codes:

    1) Bip Bip Bip at 440Hz
    2) Biiip Biiip Biip at 700Hz
    3) Biiiip Biiip Biiiip at 1150Hz
    4) Biiiip Bip Biiip Biiiip at 1295Hz

    I want to decode these 4 error codes.
    I can't touch nothing (the buzzer, the amp, the sound) than I must use a small little mic to capture the sound/code.

    Besides, the buzzer is situated in a crowded place with many people that speaks, screams, cries etc.

    Is it possible to do?

    Thanks a lot and sorry, another time.

    zuisti

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