IS61DDPB24M18C/C1/C2 IS61DDPB22M36C/C1/C2 4Mx18, 2.
IS61DDPB24M18C1 - 72Mb DDR-IIP CIO SYNCHRONOUS SRAM
IS61DDPB24M18C2 - 72Mb DDR-IIP CIO SYNCHRONOUS SRAM
IS61DDPB24M18C - 72Mb DDR-IIP(Burst 2) CIO SYNCHRONOUS SRAM