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Altera_Forum's avatar
Altera_Forum
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14 years ago

What's the different usage between SDRAM and SRAM?

Hi, all When i build a SOPC system, I can use external SDRAM or SRAM as the system memory. I want to know what's the difference between them. I assume their function the same except...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

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Oh, and when you come to build hardware, you'll find that SRAM is expensive!

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On a cost per mb comparision yes.

SRAMs usually come in sizes in terms of Kbs or Mbs. 8Mb SRAMS are very very expensive.

SDRAMs come in 100s of Mbs, for about the same price (or less).

SRAMs can be very useful for video processing because of the low latency and easy random access.