Hitachi H8/3048 Hardware Manual page 181

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Set area 3 for 16-bit access
CS
Set P8 DDR to 1 for output
1 3
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)
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