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Altera_Forum's avatar
Altera_Forum
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20 years ago

External SRAM timing

Hi Based on comments I've seen on the software side of Niosforum, I am getting the impression that there may be timing issues when using external SRAM and the Altera supplied components. I...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

we especially had a problem with the setup time of

SRAM (ISSI) IS61LV25616AL-10T.

I also got the tip from altera engeneer to reduce driver

strengh on bus signals e.g. with

set_instance_assignment -name CURRENT_STRENGTH_NEW 4MA -to D\[0\]

we now use setup 1,wait 1, hold 1 cycle and 4 mA on bus signals

(signals have less reflections)