IS61DDB21M18A IS61DDB251236A 1Mx18, 512Kx36 18Mb D.
IS61DDB21M18A - 18Mb DDR-II (Burst 2) CIO SYNCHRONOUS SRAM
IS61DDB21M18A IS61DDB251236A 1Mx18, 512Kx36 18Mb DDR-II (Burst 2) CIO SYNCHRONOUS SRAM OCTOBER 2014 FEATURES 512Kx36 and 1Mx18 configuration avail.