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3.5.5.1. Advantages
SDRAM's most significant advantages are its capacity and cost. No other type of RAM combines the low cost and large capacity of SDRAM, which makes it a very popular choice. SDRAM also makes efficient use of pins. Because row and column addresses are multiplexed over the same address pins, fewer pins are required to implement a given capacity of memory. Finally, SDRAM generally consumes less power than an equivalent SRAM device.
In some cases, you can also share SDRAM buses between multiple SDRAM devices, or even with external memories of other types, such as external SRAM or flash memory.