HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 187

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

6.3
6.3.1
In advanced mode, the bus controller partitions the 16 Mbytes address space into eight areas, 0 to
7, in 128-kbyte or 2-Mbyte units, and performs bus control for external space in area units. In
normal mode, it controls a 64-kbyte address space comprising part of area 0. Figure 6.2 shows an
outline of the memory map.
Chip select signals (CS0 to CS3) can be output for areas 0 to 3.
H'000000
H'01FFFF
H'020000
H'03FFFF
H'040000
H'05FFFF
H'060000
H'07FFFF
H'080000
H'09FFFF
H'0A0000
H'0BFFFF
H'0C0000
H'0DFFFF
H'0E0000
H'FFFFFF
Overview of Bus Control
Area Partitioning
(1)
Advanced mode
When ASS = 0
(128 kbytes)
(128 kbytes)
(128 kbytes)
(128 kbytes)
(128 kbytes)
(128 kbytes)
(128 kbytes)
(15 Mbytes)
Area 0
Area 1
Area 2
Area 3
Area 4
Area 5
Area 6
Area 7
Figure 6.2 Overview of Area Partitioning
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
(2)
Advanced mode
When ASS = 1
(2 Mbytes)
(2 Mbytes)
(2 Mbytes)
(2 Mbytes)
(2 Mbytes)
(2 Mbytes)
(2 Mbytes)
(2 Mbytes)
Area 0
Area 1
Area 2
Area 3
Area 4
Area 5
Area 6
Area 7
Rev.3.00 Mar. 26, 2007 Page 145 of 772
H'0000
H'FFFF
(3)
Section 6 Bus Controller
Normal mode
REJ09B0355-0300