IS61DDPB22M18A/A1/A2 IS61DDPB21M36A/A1/A2 2Mx18, 1.
IS61DDPB22M18A1 - 36Mb DDR-IIP(Burst 2) CIO SYNCHRONOUS SRAM
IS61DDPB22M18A/A1/A2 IS61DDPB21M36A/A1/A2 2Mx18, 1Mx36 36Mb DDR-IIP(Burst 2) CIO SYNCHRONOUS SRAM (2.5 Cycle Read Latency) ADVANCED INFORMATION JULY .