256K x 18, 128K x 32, 128K x 36 4Mb Sync Burst SRAMs 256K X 18 CACHE SRAM, 8.5 ns, PBGA119 256K x 18, 128K x 32, 128K x 36 4Mb Sync Burst SRAMs 128K X 36 CACHE SRAM, 8.5 ns, PBGA119 4Mb56K x 18Bit) Synchronous Burst SRAM(4M位(256K x 18位)同步静态RAM(带2位脉冲地址计数器))