HD6432646 Hitachi, HD6432646 Datasheet - Page 188

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HD6432646

Manufacturer Part Number
HD6432646
Description
(HD64F264x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet

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7.3
7.3.1
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. 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/2646 Series.
154
Note: * Not available in the H8S/2646.
Overview of Bus Control
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
(1)
Figure 7-2 Overview of Area Partitioning
Advanced mode
(2Mbytes)
(2Mbytes)
(2Mbytes)
(2Mbytes)
(2Mbytes)
(2Mbytes)
(2Mbytes)
(2Mbytes)
Area 0
Area 1
Area 2
Area 3
Area 4
Area 5
Area 6
Area 7
H'0000
H'FFFF
(2)
Normal mode*

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