IS43DR16160A 16Mx16 DDR2 SDRAM ISSI IS43DR16160A 16Mx16 DDR2 SDRAM is a Double Data Rate (DDR) Synchronous DRAM (SDRAM) organized as 4M x 16 bits x 4 banks. This product uses a double-data-rate architecture to achieve high-speed operation. The double data rate architecture is essentially a 4N prefetch architecture with an interface designed to transfer two data words per clock cycle at the I/O balls.