Sunday, July 1, 2012

understanding DDR2 RAM modules

I was looking for a proper way to understand the working of a DDR2 SDRAM modules which are readily available in the market. I wanted to understand how to interface, but i figured out that its important to know the a about the working.



I figured out that , one can understand by following the following sequence:
1) Look for a Micron DDR2 data sheet.
    - This will give you an idea about the SDRAM 'Chip' on the modules you buy .
2) Then if you look for DIMM(Dual in-line memory module). wiki page is good enough to give you a good idea. Consider looking for SO-DIMM, which are used for Laptops and even Mini-DIMM ,which are used in some of the development kits .
3) Now you may look for difference b/w buffered and unbuffered  modules.

By the end i feel one may completely understand the working of DDR2 modules.

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