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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

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  • morning dazheng,

    ive been working for too long but making progress.

    thanks for your guru advise.i now have another bug found but with the MCU talking but have talking between them wrong.

    I am new to 874C35 and want to play with it. So I need to build a programmer. Please advice me which programmer should I build considering most supported device including 874C31, which also supports WINMCU200, heard it is very handy than ic-prog. Found this MCU programmer based on JIT programmer and seems handy to me because it supports both LRP and HCAP. Does anybody used this programmer ? Does it supports winmcu800? If so how to configure ?

    i know you are busy but your experiece is needed for my helping .

    yawn yawn.

    zuisti

  • Hi zuisti mate,

    the 874C35 looks good.i have the datashits and i like facilities. the Programmer is not so easy to find and i saw 874C31 also but is diferent(?)

    I look more for you.

    can you give me profesional advise now please on motor drivers.

    you were lookin at the efkar motor driver circit i think and i want to see schematic essentials exigent,

    please assistance please

    qotd

    Remember! You are unique, just like everybody else.

    great huh?!?!

  • "Does anybody used this programmer ?"

    Yes, somebody does.

    "Does it supports winmcu800?"

    Just like it says on the tin.

    "If so how to configure ?"

    Fill in the options under the configuration menu.

  • "i have the datashits ..."

    Ugh! Depending on their orientation "at exit", the ones hurt worse than the zeros, don't they?

    "diferent(?)"

    Right, you're wrong.

    "please assistance please"

    I hope you cure those datashits soon. You're really stinkin' up the joint. No assistance however. You do your own wiping.

  • dazheng,

    the efkar motor driver circuit is simple but has lots of pins to connect up for the steppering.I had tried a stepper motor controller n driver with L5297 + LR623 and result is perfect.but sometimes it doesnot start and sometimes goes backwards(?) you will use this circuit in the purposed CNC machine.

    see home.att.net/.../MD4.html

    i think we could make it beter.yes(?)

  • "backwards(?)"

    Yes, good one. A silver star for you.

    "i think we could make it beter.yes(?)"

    "beter"? No.

    "better"? Yes, but no.

    In any case, no you couldn't make it better.
    Even the best CNC machines sometimes don't start.
    That's just the way they are.
    CNC motion includes going backwards.

    Don't worry.

    No improvement needed.

  • Hi ziusti,

    do we we get the 2543b? i think the nmck-45892zr is better(bcoz bigger voltege).

    And my proposition is an additional soft-start circuit with an R-LC and an SiAg-diode ...

    does you somone have an idea of how to do a control of an induction single phase motor , i ve done one project in my life but it was for three phase, it was depending on the fase angle i think been a long time ive done it, do ou think i can use this priciple with a single phase motor that is monitor the phase via an opto coupler fed to a mcu and the mcu drive an optocouple to drive a triac by pwm?, my pump is is rated 0.5hp my problem is that i have installed a pump for my bathroom and the maximum pressure for my shower heater is 3 bars and my pump is working at 4 bars, the main problem i fear is that the pipes in my shower get damaged quickly and secondly the frequent start of the automatic pump will damage the stator of my motor.

    if she goes backward the water is suck up shower; LOL

    thanks in advance

  • "do
    we
    we
    get
    the
    2543b?
    i think
    the
    nmck-45892zr
    is
    better(bcoz
    bigger
    voltege).

    And
    my
    proposition
    is
    an
    additional
    soft-start
    circuit
    with
    an
    R-LC
    and
    an
    SiAg-diode
    ...

    does
    you
    somone
    have
    an
    idea
    of
    how
    to
    do
    a control
    of
    an
    induction
    single
    phase
    motor
    , i
    ve
    done
    one
    project
    in
    my
    life
    but
    it
    was
    for
    three
    phase,
    it
    was
    depending
    on
    the
    fase
    angle
    i think
    been
    a long
    time
    ive
    done
    it,
    do
    ou
    think
    i can
    use
    this
    priciple
    with
    a single
    phase
    motor
    that
    is
    monitor
    the
    phase
    via
    an
    opto
    coupler
    fed
    to
    a mcu
    and
    the
    mcu
    drive
    an
    optocouple
    to
    drive
    a triac
    by
    pwm?,
    my
    pump
    is
    is
    rated
    0.5hp
    my
    problem
    is
    that
    i have
    installed
    a pump
    for
    my
    bathroom
    and
    the
    maximum
    pressure
    for
    my
    shower
    heater
    is
    3 bars
    and
    my
    pump
    is
    working
    at
    4 bars,
    the
    main
    problem
    i fear
    is
    that
    the
    pipes
    in
    my
    shower
    get
    damaged
    quickly
    and
    secondly
    the
    frequent
    start
    of
    the
    automatic
    pump
    will
    damage
    the
    stator
    of
    my
    motor.

    if
    she
    goes
    backward
    the
    water
    is
    suck
    up
    shower;
    LOL"

  • "result is perfect. but sometimes it does not start"

    This is clearly some new meaning of "perfect" of which we were previously unaware!

    That's kind of "perfect in an imperfect sort of way", then?!

    I'll tell the QA guys to stop being so negative - everything is "perfect", even if it doesn't work properly!

  • result is perfect. but sometimes it does not start
    Maybe they mean "complete" when saying perfect. This would explain why it does not start: It started some time ago and has ended now?

  • "Maybe they mean 'complete'"

    As in, "complete nonsense" - like the rest of the thread...?

  • I'm dying to see the "machine" these two are trying to conjure up. Apparently it has something to do with an MP3 Player, a bathroom shower, and a CNC machine that is ok if it runs backwards.

    This thread has to be a long-winded hoax...there just isn't any way two people can be this stupid!

    R

  • That is what we hope, even if they are quite amusing.

  • "... a bathroom shower ..."

    Plugged up by the very bushy sister that wears only
    tee-shirts who is such a bad cook that she gives her
    brother the datashits.

  • Hi dazheng,

    ??? why the trollops keep trying to hyjack our project thread ???

    i think we must use the secret code to hide detail or they will copy our ideas.

    Ive gone back to the playa and want better snd.

    I have a pair of unused 5.1 speakers. I was using them with my pc. I want now to use them with my 'television'.
    The problem to solve is: The speakers have two stereo inputs.
    One for low frequencies, one for middle rage frequencies and one for hight frequencies.

    I want to design an active filter that will be able to split the stereo signal from my 'tv' to this three sections of frequencies.

    Many years have passed since I was designing filters and I would like your help. i think we need mcu to do it better with lot more code for better sound. If there is a schematics out there it would be great.

    plz.U hv to design active filter according to the frequency response of ur speakers.
    Then u will get excellent performance from ur filter.
    I hv one small swollen key filter design software but unable to upload here.

    i know it is need for quick. but i know you are good strong profesional guru that helps again.

    Thanks mate

    zuisti