64K x 16 Asynchronous Bank-Switchable Dual-Port SRAM From old datasheet system HIGH-SPEED 3.3V 64K x 16 BANK-SWITCHABLE DUAL-PORTED SRAM WITH ExTERNAL BANK SELECTS
256k x 16 Bit FPM DRAM 3.3 V 60 ns -3.3V 256 K x 16-Bit Dynamic RAM 3.3V Low Power 256 K x 16-Bit Dynamic RAM with Self Refresh 256k x 16 Bit FPM DRAM 3.3 V 70 ns From old datasheet system