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DRAM Tester for 64k x 1 4164 and 4864 RAM
This uses common resistors and parts, the only parts that may require special consideration are the Arduino Pro Mini (make sure you get the correct type, 5V/16MHz with a matching pinout to the PCB), and a 0.96" I2C OLED display.
The latest firmware will be available to download from my website: https://www.TheDefpom.com
I decided to use through hole components to make the project easier to assemble, it is a bit old school but I think it is more suitable for this purpose.
The 150 Ohm resistors are there to provide protection in case the IC being tested has a short circuit, similarly there is a 33 Ohm on the main power supply rail for the same purpose.
The 2N3906 is used to turn the power on/off to the IC so it is only powered during testing, the LED built into the Pro Mini indicates when power is on (and flickers after each test is complete).
I will be publishing videos about this project in the coming weeks on my YouTube channel also, in case you want to see it in action: http://www.youtube.com/TheDefpom
So far I have done a "Short" showing the prototype version working: https://youtu.be/RAYK1XHOOk8
Videos show the unit being made and tested:
DRAM Tester for 64k x 1 4164 and 4864 RAM
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
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