HD6413002 Datasheet, PDF (174/700 Pages) Renesas Technology Corp – High-performance single-chip microcontroller

Set area 3 for 16-bit access
Set P8₁ DDR to 1 for CS₃ output
Set RTCOR
Set bits CKS2 to CKS0 in RTMCSR
Write H'23 in RFSHCR
Wait for DRAM to be initialized
DRAM can be accessed
Figure 7-10 Setup Procedure for 2WE 4-Mbit DRAM with 10-Bit Row Address and
8-Bit Column Address (16-Mbyte Mode)
159