HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 197

• Manufacturer Part Number: HD6412332
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

6.5
6.5.1
When the chip is in advanced mode, external space areas 2 to 5 can be designated as DRAM
space, and DRAM interfacing performed. With the DRAM interface, DRAM can be directly
connected to the chip. A DRAM space of 2, 4, or 8 Mbytes can be set by means of bits RMTS2 to
RMTS0 in BCRH. Burst operation is also possible, using fast page mode.
6.5.2
Areas 2 to 5 are designated as DRAM space by setting bits RMTS2 to RMTS0 in BCRH. The
relation between the settings of bits RMTS2 to RMTS0 and DRAM space is shown in table 6.4.
Possible DRAM space settings are: one area (area 2), two areas (areas 2 and 3), and four areas
(areas 2 to 5).
Table 6.4
RMTS2
0
DRAM Interface
Overview
Setting DRAM Space
RMTS1
0
1
DRAM Space Settings by Bits RMTS2 to RMTS0
RMTS0
1
0
1
Area 5
Normal space
Normal space
DRAM space
Area 4
Normal space
Normal space
DRAM space
Rev.4.00 Sep. 07, 2007 Page 167 of 1210
Area 3
Normal space
DRAM space
DRAM space
REJ09B0245-0400
Area 2
DRAM space
DRAM space
DRAM space