Read EEPROM Data Without a Microcontroller

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  • เผยแพร่เมื่อ 28 ก.ย. 2024
  • Note: This video has been moved to my new personal, non-gaming channel.
    / @mkafarowski
    In this project I constructed a circuit that would allow me to read the data from an EEPROM without using an Arduino or similar microcontroller. The EEPROM is a 256 byte Atmel 93C56 I desoldered from something years ago. Clock pulses are provided by a standard 555 timer chip. I input data to the chip using the pushbutton in the middle of the board and am able to watch as the chip writes out the data stored in the specified memory address.
    This is obviously not a practical method to extract or program data onto a chip, but moreso just proof that you don't need a KHz or MHz clock speed or a microcontroller to interface with these chips.
    Here is the the schematic:
    imgur.com/u1Rokec
    Some notes - I'm not too great at drawing these yet so sorry it's a bit busy looking! The 5M resistor is actually a few 1Ms in series.... I'm still working on some more elegant 555 designs.

ความคิดเห็น • 11

  • @bronga645
    @bronga645 2 ปีที่แล้ว +1

    Let the light show your the way.
    Nice demo friend

  • @seyedmarashi
    @seyedmarashi 6 ปีที่แล้ว +2

    very well project, think for 24CXX series! possible without SPI for that EEPROMS?

  • @dragos7puri
    @dragos7puri 8 ปีที่แล้ว +2

    Very nice demo. Not much practical applicability, but great proof of concept. Communication is on SPI, right?

    • @InfinityArcane
      @InfinityArcane  8 ปีที่แล้ว

      Yeah, you definitely wouldn't want to be punching in numbers and reading/writing a byte at a time! The communication protocol is indeed SPI.

    • @jayprakashroy6648
      @jayprakashroy6648 7 ปีที่แล้ว

      How to read apron hcs300 coada hopping ic factri coadcoax

    • @Filipx87page
      @Filipx87page ปีที่แล้ว

      @@InfinityArcane But you need to pay close attention to chip select active in high, it is more usual in SPI in low and if you pay less attention you can catch it. 😀

  • @pefeckclovis9036
    @pefeckclovis9036 ปีที่แล้ว

    Nice idea. How can other addresses be read and used ?

  • @prashantmadan2106
    @prashantmadan2106 7 ปีที่แล้ว +3

    Hey, please make a video on 24cxx family eeprom too .

    • @nicoletaanghel6147
      @nicoletaanghel6147 6 ปีที่แล้ว

      I second that - even thou I don't think it would differ wildly.

  • @خالدباشميل-ب9و
    @خالدباشميل-ب9و 2 ปีที่แล้ว

    I don't find schematic can you give me

  • @DJSOP
    @DJSOP ปีที่แล้ว

    Hello sir, I am using pcb 5.0 Willem Eeprom Programmer and do not have a model for a chip but have socket, is it possible to make it and pay someone to add that chip to be supported? Atmel AT27C512R