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Newbie question again!
What are the relationships and differences among DRAM, SRAM, SDRAM ? Somebody knows please tell me, thanx a lotLink Copied
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DRAM ( dynamic RAM ) are cell's that holds data using capacitor, so they are usually slower than other kinds, but they're cheap (~1 trans). an example of DRAM is your computers RAM module. problem is, the capacitor will discharge, so they have to rewrite time to times ( using onboard dram controller ) to "refresh" data.
SRAM ( static RAM ) on the other hand are flip-flip based, they catch a bit in their circullar path. they are small, and fast but need ~6-8 trans. many of the onchip memories ( like CPU's cache, rf, scratchpad ) are SRAM based. I think Altera's Ram block like m9k follows this too. SDRAM is DRAM with Sync. clock interface. like computer's RAM module.- Mark as New
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