40496501TH Rev.115Figure 2.3(3)DRAM(IC28)The RAM is CMOS dynamic RAM with (256K x 16 bit) configuration, and used as buffers (suchas receiving buffer, printing buffer, DLL buffer and working buffer).The following shows the examples of the memory access operation.MPU CLOCKALEA16~BHEAD0~AD15RDAD0~AD15WRCSAD0~AD15A16~BHEDRAMD0~D15DRAMA0~A9MPUNHDC LSIDRAMA16~BHEA0–A15D0–D15A0–A15D0–D15ALERDWRCSCLKRASCASUCASLRDWR