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Altera_Forum
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18 years ago

DRAM and SRAM with Cyclone III

Hello all, I have some general questions regarding the use of DRAM and SRAM memories with Cyclone III devices. 1) DRAM memory Do I need to connect the DRAM memory chip directly to the de...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

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Hello Webmoon,

Thank you for your answer. Is it possible to send me your Pinout or the part of your schematic with the DRAMs and the Cyclone III. I would really appreciate. Did you use the dedicated pins for the strobe signals?

Regards

-Pierre

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I used DQ and DQS pins according to ALTERA's http://www.altera.com/literature/dp/cyclone3/ep3c25.pdf (http://www.altera.com/literature/dp/cyclone3/ep3c25.pdf) PIN-OUT file.

Before making PCB board run analysis and synthesis in Quartus to make sure your project is working. Because you can see if Quartus can place some pins and don't forget to assign pins according to standart SSTL-2 Class I if you use DDR SDRAM and don't forget to connect VREF pin of CYCLONE III to 1/2 of 2.5V if CYCLONE III bank is used for DQ and DQS pins.