HD6433044 Datasheet, PDF (183/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

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'3B in RFSHCR
Wait for DRAM to be initialized
DRAM can be accessed
Figure 7-12 Setup Procedure for 2CAS 4-Mbit DRAM with 9-Bit Row Address and
9-Bit Column Address (16-Mbyte Mode)
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