72 Mb (2M x 36 & 4M x 18) . DDR-II (Burst of 2) CI.
IS61DDB22M36 - DDR-II (Burst of 2) CIO Synchronous SRAMs
IS61DDB22M36C - 72Mb DDR-II CIO SYNCHRONOUS SRAM
IS61DDB22M36A - 72Mb DDR-II (Burst 2) CIO SYNCHRONOUS SRAM
