HD64F3028F25 Datasheet, PDF (162/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

6.3 Operation
6.3.1 Area Division
The external address space is divided into areas 0 to 7. Each area has a size of 128 kbytes in the 1-
Mbyte modes, or 2-Mbytes in the 16-Mbyte modes. Figure 6.2 shows a general view of the
memory map.
H' 00000
H' 1FFFF
H' 20000
H' 3FFFF
H' 40000
H' 5FFFF
H' 60000
H' 7FFFF
H' 80000
H' 9FFFF
H' A0000
H' BFFFF
H' C0000
H' DFFFF
H' E0000
H' FFFFF
Area 0 (128 kbytes)
Area 1 (128 kbytes)
Area 2 (128 kbytes)
Area 3 (128 kbytes)
Area 4 (128 kbytes)
Area 5 (128 kbytes)
Area 6 (128 kbytes)
Area 7 (128 kbytes)
H' 000000
H' 1FFFFF
H' 200000
H' 3FFFFF
H' 400000
H' 5FFFFF
H' 600000
H' 7FFFFF
H' 800000
H' 9FFFFF
H' A00000
H' BFFFFF
H' C00000
H' DFFFFF
H' E00000
H' FFFFFF
Area 0 (2 Mbytes)
Area 1 (2 Mbytes)
Area 2 (2 Mbytes)
Area 3 (2 Mbytes)
Area 4 (2 Mbytes)
Area 5 (2 Mbytes)
Area 6 (2 Mbytes)
Area 7 (2 Mbytes)
(a) 1-Mbyte modes (modes 1, and 2)
(b) 16-Mbyte modes (modes 3, 4, and 5)
Figure 6.2 Access Area Map for Each Operating Mode
Chip select signals (CS₀ to CS₇) can be output for areas 0 to 7. The bus specifications for each
area are selected in ABWCR, ASTCR, WCRH, and WCRL.
In 16-Mbyte mode, the area division units can be selected with the RDEA bit in BCR.
Rev. 2.00, 09/03, page 130 of 890