Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Using half of DDR2 SO-DIMM

I want to use 1/2 of a DDR2 so-dimm module with 32 bit wide DDR2 interface to Cyclone II. Has anyone done this? I believe this will work, provided I properly terminate the unused chips on the modul...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

CMOS chips have no normal quiescent current, I think. Another point is, that DDR2 RAMs incorporate a clock processing PLL, so it's no easy to decide what they do without an input clock.

I agree, that driving defined levels to all control inputs can be a starting point. The said power option still exists, but involves additional effort.