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H8S2245 датащи(PDF) 187 Page - Renesas Technology Corp

номер детали H8S2245
подробное описание детали  Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
PDF  818 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8S2245 датащи(HTML) 187 Page - Renesas Technology Corp

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Section 6 Bus Controller
Rev.3.00 Mar. 26, 2007 Page 145 of 772
REJ09B0355-0300
6.3
Overview of Bus Control
6.3.1
Area Partitioning
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.
Area 0
(128 kbytes)
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
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
(15 Mbytes)
H'FFFFFF
(1)
Area 0
(2 Mbytes)
H'000000
H'FFFFFF
(2)
(3)
H'0000
H'1FFFFF
H'200000
Area 1
(2 Mbytes)
H'3FFFFF
H'400000
Area 2
(2 Mbytes)
H'5FFFFF
H'600000
Area 3
(2 Mbytes)
H'7FFFFF
H'800000
Area 4
(2 Mbytes)
H'9FFFFF
H'A00000
Area 5
(2 Mbytes)
H'BFFFFF
H'C00000
Area 6
(2 Mbytes)
H'DFFFFF
H'E00000
Area 7
(2 Mbytes)
H'FFFF
Advanced mode
When ASS = 0
Advanced mode
When ASS = 1
Normal mode
Figure 6.2 Overview of Area Partitioning



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