154
7.3
Overview of Bus Control
7.3.1
Area Partitioning
In advanced mode, the bus controller partitions the 16 Mbytes address space into eight areas, 0 to
7, in 2-Mbyte units, and performs bus control for external space in area units. A chip select signal
(
CS0
to
CS7
) can be output for each area. In normal mode*, it controls a 64-kbyte address space
comprising part of area 0. Figure 7-2 shows an outline of the memory map.
Note: * Not available in the H8S/2633 Series.
Area 0
(2Mbytes)
H'000000
H'FFFFFF
(1)
(2)
H'0000
H'1FFFFF
H'200000
Area 1
(2Mbytes)
H'3FFFFF
H'400000
Area 2
(2Mbytes)
H'5FFFFF
H'600000
Area 3
(2Mbytes)
H'7FFFFF
H'800000
Area 4
(2Mbytes)
H'9FFFFF
H'A00000
Area 5
(2Mbytes)
H'BFFFFF
H'C00000
Area 6
(2Mbytes)
H'DFFFFF
H'E00000
Area 7
(2Mbytes)
H'FFFF
Advanced mode
Normal mode
*
Note:
*
Not available in the H8S/2633 Series.
Figure 7-2 Overview of Area Partitioning
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...