Programming EEPROMs from Scratch

You're interested in digital electronics and are looking for a way to program EEPROMs,
i. e. electrically erasable programmable read only memory?
Let's build one for AT28C64 EEPROMs in about 20 minutes!
In case you don't have 'hexdump' available on your machine search for 'hexdump for Windows'.

Link to the project's GitHub repository:

Music: Hideyatakayanagi - Origin Recurrence - Free Background Music No Copyright Music

Hideyatakayanagi:

Free Background Music:

[robertmcfarland]

Ben Eater has a great explanation of this same project but he explains every thought, wire, detail. A great Project.

[amnesie]

Und wieder einmal ein großartiges Video! Danke!

[boostaddict_]

This is really helpful. I'm building a similar circuit to read and write plcc32 EEPROMs with 8 16kb sectors, it doesn't need to be fast but I'm cheap so this will be a good way to do it myself lol.

[philippesteelant]

Very nice, do you also have a normal schematic of this project, please ?

[francoisdastardly]

Fantastic video. Do you have the real schematic ? Is a little confusing the protoboard view. Many thanks for your work. Greetings from Argentina !

[boydragon]

If I write incorrectly, can I erase the chip by using this PROM.exe and then reprogram it

[mohammadabdallah]

Thank you for your work and the explanation. On my Windows I get an error that prom is not defined, I tried to install prom.exe but it shows that it is not compatable with Windows 10. Pls help

[thebaron]

Dumb question. why use the shift registers when you appear to have enough free pins to do it straight from the Arduino? 12 pins from the shift registers 16 easily available data pins from the Arduino.

[greenerell]

sad the eprom i was going to use needs 95 -105µs and the arduirno can't do that precise timing

[stenkristensson]

Sten Kristensson
I opened a console window in the ´prom´- folder. The command ´prom´ works OK but the command ´ls´ is not recognised by the console and none of the other commands.
Please help

[drchrome]

hello - I have an old [80s] film processor that uses eproms to program steps in any particular film process. I have no experience in this regard. Is it possible to create such an eprom? Thanks. dw

[Mrmarc]

berry nice! i found on PLC a m27c256b, is compatible? is similar to 28c64b? i just know it have 256kb memory.. but i dont know if we can use it on this project (My version is not UV removing memory but OTP EEPROM

[maximjacquet]

Hey! I really love your content! Do you think this could be modified to program a 28c256 eeprom? (32k) Also, I was wondering how I could upload hex files using this design. Thanks!

[noureddinebenakrim]

This will works with all eeproms or just this one?

[viscious]

Hi! Would it bee too different doing it with a 40 pin zif socket?

[Gipsy_T.]

the pin 1 (No connect) is connected to ground??? or what should i do with that pin

[devjosh]

Hey, cool Video! But do you also know a good EEPROM Programmer for AT28C256's? Would be nice if you could suggest some! :)

[francoisleveille]

Would be nice to have a version for Teensy uC which have extra IO and don't really need a pair of 74HC595 for the address lines.

[rogrevs]

I have just started using Linux for my hobby projects and would like to run prom.exe on a Debian machine. Is this possible, and how do I go about setting it up? Sorry if this is a very basic question, but I am new to Linux.

[Ottmar]

It says 20 minutes but the video is only 5. 2.5/10