HD6473032F16 Datasheet, PDF (199/847 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

Section 7 Refresh Controller
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)
Rev. 3.00 Mar 21, 2006 page 169 of 814
REJ09B0302-0300