H8SX1663 datasheet(127/1158 Pages) RENESAS

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Section 3 MCU Operating Modes

Rev.1.00 Jun. 07, 2006 Page 75 of 1102

REJ09B0294-0100

External address space/

reserved area*1, *3

External address space/

reserved area*1, *3

External address space/

reserved area*1, *3

External address space/

reserved area*1, *3

Access prohibited area

On-chip ROM

On-chip RAM*2

On-chip I/O registers

H'000000

H'080000

H'FF2000

H'FFC000

H'FD9000

H'FDC000

H'FFEA00

H'FFFF00

H'FFFF20

H'FFFFFF

This area is specified as the external address space when EXPE = 1 and the reserved area when EXPE = 0.

The on-chip RAM is used for flash memory programming. Do not clear the RAME bit to 0.

Do not access the reserved areas.

This area is specified as the external address space by clearing the RAME bit in SYSCR to 0.

Notes:

Mode 2

Boot mode

(Advanced mode)

Mode 4

On-chip ROM disabled

extended mode

(Advanced mode)

External address space

On-chip RAM/

external address

space*4

On-chip I/O registers

H'000000

H'FF2000

H'FFC000

H'FD9000

H'FDC000

H'FFEA00

H'FFFF00

H'FFFF20

H'FFFFFF

Access prohibited area

H'FF0000

Access prohibited area

H'FF0000

Figure 3.2 Address Map in Each Operating Mode of H8SX/1664 (1)

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