IS61DDPB22M18B/B1/B2 IS61DDPB21M36B/B1/B2 2Mx18, 1.
IS61DDPB22M18B2 - 36Mb DDR-IIP(Burst 2) CIO SYNCHRONOUS SRAM
IS61DDPB22M18B1 - 36Mb DDR-IIP(Burst 2) CIO SYNCHRONOUS SRAM
IS61DDPB22M18B - 36Mb DDR-IIP(Burst 2) CIO SYNCHRONOUS SRAM