H8SLASH3028F datasheet(160/923 Pages) RENESAS

Nome de Peças	H8/3028F

Descrição Electrónicos	Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

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Fabricante Electrônico	RENESAS [Renesas Technology Corp]

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160 / 923 page

Rev. 2.00, 09/03, page 130 of 890

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 (

0 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.

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