IS61DDPB42M18B/B1/B2 IS61DDPB41M36B/B1/B2 2Mx18, 1.
IS61DDPB42M18B2 - 36Mb DDR-IIP(Burst 4) CIO SYNCHRONOUS SRAM
IS61DDPB42M18B1 - 36Mb DDR-IIP(Burst 4) CIO SYNCHRONOUS SRAM
IS61DDPB42M18B - 36Mb DDR-IIP(Burst 4) CIO SYNCHRONOUS SRAM