Two DDR3L SDRAMs (W632GU6MB 2 Gbits = 16, 777,216 words x 8 banks x 16 bits) are used as main system memory, totalling 4 Gbits of SDRAM on the board. The memory bus is 32 bits wide and operates with a frequency of up to 166 MHz.

Figure 1. DDR3L SDRAM Implementation