Monster Memory


Posted on Nov 13, 2012

A discussion recently on the mp3projects discussion board, about using DRAM memory with small 8-bit processors without DRAM controllers, got me to take up an old idea. I thought it should be possible to hook up a DRAM to a small processor (in this case an Atmel 8515), and handle the RAS/CAS sequencing and refresh in software. As DRAM is MUCH cheaper than SRAM, it would be possible to get a large (>500kB) memory at a reasonable price. There would obviously be a speed penalty, but in some cases, this would be of no importance.


Monster Memory
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    4 lines Stereo Mixer
    Valve high-gain stereo preamp
    Single-Ic Alarm
    Ir Pulse To Audio Converter Circuit
    Homemade exposure unit
    Speaker to microphone converter circuit
    AN6610 Application Circuit
    Serial - parallel conversion circuit
    Homemade wireless remote control circuit diagram
    DC motor armature series resistance one way operation start dynamic braking circuit



    Top