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About EEPROM programer.................!! — Parallax Forums

About EEPROM programer.................!!

RITESH KAKKARRITESH KAKKAR Posts: 254
edited 2011-07-05 09:54 in General Discussion
HI,

I have learned that EEPROM are very much used, after EPROM due to UV rays need in this chip but how to write program using an EEPROM programer as i have found there are many.......??

How to get UV rays to remove/erase prgram from chip?



Thanks
«1

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2011-06-25 10:33
    EEPROMs are not erasable using UV. EEPROM stands for Electrically Erasable Programmable Read Only Memory

    I recommend using the Wikipedia for questions of this sort. It is available in many languages. Start with this article and follow the links given as you read it.
  • Duane DegnDuane Degn Posts: 10,588
    edited 2011-06-25 15:40
    Ritesh,

    I know you like to do your project without microcontrollers but I'm wondering if you'd be interested in learning to use the Propeller.

    I personlly think the Propeller is a great microcontroller. I have a QuickStart board I need to give to someone who hasn't used the Propeller before.

    If you send me a "Private Message", with your address in India, I'll mail you a QuickStart board.

    Duane
  • John A. ZoidbergJohn A. Zoidberg Posts: 514
    edited 2011-06-25 20:37
    UV programmable/erasable PROMS are pretty rare nowadays.

    I believe there are many EEPROMs and its own cheap programmer for sale there.
  • RITESH KAKKARRITESH KAKKAR Posts: 254
    edited 2011-06-26 08:05
    EEPROMs are not erasable using UV. EEPROM stands for Electrically Erasable Programmable Read Only Memory

    Yeah, i know EEROM ned electricity, i was talking this for EROM how to get UV rays??
  • Mike CookMike Cook Posts: 829
    edited 2011-06-26 08:11
    http://en.wikipedia.org/wiki/Eprom

    http://en.wikipedia.org/wiki/UV_light
  • Mike GreenMike Green Posts: 23,101
    edited 2011-06-26 08:14
    You buy a UV light. There used to be UV eraser devices that had a fluorescent tube (or several) inside a black box just the right size to hold some EPROMs at the right distance from the tube(s) to erase in about an hour or several hours depending on how much you spent. You could also leave the EPROMs outside in direct sunlight for a few days.
  • PliersPliers Posts: 280
    edited 2011-06-26 08:16
    To get UV light into your device....
    First remove the sticker covering the window.
    Next put it out side and let the sun shine on it for 1 hour.
    Or buy a UV light and shine it onto the window, 20 minutes.
  • RITESH KAKKARRITESH KAKKAR Posts: 254
    edited 2011-06-26 08:33
    OK, now i got it in my mind....!! thanks

    But, is there more application of EEPROM now, what is max. size of of memory content??
  • ctwardellctwardell Posts: 1,716
    edited 2011-06-26 09:05
    http://www.google.com/

    C.W.
  • Mike GreenMike Green Posts: 23,101
    edited 2011-06-26 09:17
    The Wikipedia is your friend. All of your questions can be answered there.
  • RITESH KAKKARRITESH KAKKAR Posts: 254
    edited 2011-06-26 09:59
    I am asking this because if i will buy a universal EEROM programmer, it must have future us also......!! Paralax also sell this Programmers??
  • Mike GreenMike Green Posts: 23,101
    edited 2011-06-26 10:10
    Parallax does not sell a universal EEPROM programmer. You'll have to look through the on-line catalogs of distributors like DigiKey, Jameco, Mouser, etc. You don't have to buy from them, but they carry a wide range of items and their on-line catalogs include links to datasheets and prices that are typical.
  • Duane DegnDuane Degn Posts: 10,588
    edited 2011-06-26 10:26
    Could one use a Propeller as an EEPROM programmer?

    I know it can write to I2C EEPROMs. Are there other kinds? Never mind, I went to our friend Wikipedia and found that there are lots of different EEPROM with lots of different communication protocols. I'd think the Propeller would be able to handle all the protocols. It might not be as easy as a dedicated programmer but I'd think it would work.

    What do people keep saying about only having a hammer? The Prop is my hammer and everything looks like propeller nails.

    Duane
  • Mike GreenMike Green Posts: 23,101
    edited 2011-06-26 10:40
    Yes, one could use a Propeller as part of an EEPROM programmer. You'd need some buffers because some EPROMs and EEPROMs require 5V signals and you'd need an adjustable regulator or other power switch because many EPROMs and EEPROMs require one or more pins to be set to voltages like 12V or 9V during programming. I'm sure you can find designs for universal programmers on the internet using some kind of PIC for a controller. You could use a variation of the design and substitute a Propeller for the controller. That would allow you to have a nice detailed display of what's happening and to control things with a PS/2 keyboard and typed in commands.
  • kwinnkwinn Posts: 8,697
    edited 2011-06-26 10:44
    I am pretty sure Duane is right about the Prop being able to handle all the eeproms out there. It certainly had no problems with the eeproms I use to replace eproms ranging from 2708 to 27010.
  • RITESH KAKKARRITESH KAKKAR Posts: 254
    edited 2011-06-26 21:12
    Could one use a Propeller as an EEPROM programmer?

    Hi,

    What is this propeller, i found that it is a fan in Google...
    & can you tell me more about I2c..??
  • Duane DegnDuane Degn Posts: 10,588
    edited 2011-06-26 21:17
    Propeller is the name of the microcontroller made by Parallax. It is the microcontroller on the QuickStart board I plan to send to you.

    Please make sure I have your address formatted correctly. I sent you a Private Message about this.

    Duane
  • kwinnkwinn Posts: 8,697
    edited 2011-06-26 22:24
    Propeller is also the greatest thing for interfacing to and upgrading older electronics.
  • RITESH KAKKARRITESH KAKKAR Posts: 254
    edited 2011-06-27 03:53
    can you tell me more about I2C..??
    i can't understand it in Google ..!!
  • John A. ZoidbergJohn A. Zoidberg Posts: 514
    edited 2011-06-27 06:25
    I typed I2C in Google Search bar.

    I found a lot of results!

    Okay, here's a simple one. Please fill in the blanks:

    I2C stands for I____ I________ Circuit. It is developed by P_____ Incorporated. It is a mode of c_______ for between two p________, such as ROM, RAM, ADC, and et cetera. Only ___ wires are needed for an I2C connection.

    Here is the simple tutorial explaining about the rudiments of I2C.
  • RITESH KAKKARRITESH KAKKAR Posts: 254
    edited 2011-06-29 08:31
    Hi again,

    I have read that tutorial, according to I2C they required 4 wires for power supply, SCL & SDA.....is that used in USB also or other application of it??
  • Mike GreenMike Green Posts: 23,101
    edited 2011-06-29 10:38
    I2C has nothing to do with USB. It's like comparing Apples with Rocks. They're both digital protocols. They both have power supply connections. That's about it.
  • Duane DegnDuane Degn Posts: 10,588
    edited 2011-06-29 11:43
    The book Understanding Signals with the PropScope has a section about synchronous serial communication. It in chapter 5 (page 14). You can download the book here.
  • RITESH KAKKARRITESH KAKKAR Posts: 254
    edited 2011-06-30 08:21
    Hi again,

    I have seen that USB oscilloscope it was very cool, especially for me because i was learning transistor biasing, for this it is very important......
    pls tell cost of that and what is the max. freq. of that??


    Thanks
  • Duane DegnDuane Degn Posts: 10,588
    edited 2011-06-30 09:26
    PropScope with text
    PropScope by itself
    Older USB Scope

    Make sure and look at the specs. of the different oscilloscopes. The PropScope costs more but can analyze higher frequency signals.
  • RITESH KAKKARRITESH KAKKAR Posts: 254
    edited 2011-06-30 20:48
    The cost of these are very much expensive, i was thinking to by this, they cost is same as of Real oscilloscope.....!!
  • Mike GreenMike Green Posts: 23,101
    edited 2011-06-30 21:01
    Yes. Most of the cost in the PropScope and in most equivalent real oscilloscopes is in the input circuitry including the probes and the high speed analog to digital converter. If you want a good quality oscilloscope, you'll find that it's not cheap.
  • RITESH KAKKARRITESH KAKKAR Posts: 254
    edited 2011-06-30 21:18
    Yeah, That's why i can't learn biasing and oscillators properly .....working in stimulator shows error and are not real....!!
  • kwinnkwinn Posts: 8,697
    edited 2011-07-01 20:25
    kenvinlee89 wrote: »
    Im new in here, Hope to enjoy this forum

    Welcome to the forum.You will find lots of friendly knowledgeable folks to help you out here.
  • Duane DegnDuane Degn Posts: 10,588
    edited 2011-07-01 20:47
    RITESH KAKKAR wrote: »
    The cost of these are very much expensive, i was thinking to by this, they cost is same as of Real oscilloscope.....!!

    Ritesh,

    Take a look at this thread about using the Propeller as a digital oscilloscope.

    I haven't tried the program myself but it looks pretty good.

    Duane
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