H8SX1663 Datasheet, PDF (125/1158 Pages) Renesas Technology Corp – Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series

Section 3 MCU Operating Modes
3.4 Address Map
3.4.1 Address Map
Figures 3.1 and 3.2 show the address map in each operating mode.
H'000000
Mode 2
Boot mode
(Advanced mode)
On-chip ROM
H'000000
Mode 4
On-chip ROM disabled
extended mode
(Advanced mode)
H'060000
H'080000
Access prohibited area
External address space/
reserved area*^1, *³
External address space
H'FD9000
Access prohibited area
H'FDC000
External address space/
reserved area*^1, *³
H'FF0000
Access prohibited area
H'FF2000
On-chip RAM*²
H'FFC000
External address space/
reserved area*^1, *³
H'FFEA00
On-chip I/O registers
H'FFFF00 External address space/
reserved area*^1, *³
H'FFFF20
On-chip I/O registers
H'FFFFFF
H'FD9000
Access prohibited area
H'FDC000
External address space
H'FF0000
Access prohibited area
H'FF2000
H'FFC000
On-chip RAM/
external address
space*⁴
External address space
H'FFEA00
On-chip I/O registers
H'FFFF00
External address space
H'FFFF20 _{On-chip I/O registers}
H'FFFFFF
Notes: 1. This area is specified as the external address space when EXPE = 1 and the reserved area when EXPE = 0.
2. The on-chip RAM is used for flash memory programming. Do not clear the RAME bit to 0.
3. Do not access the reserved areas.
4. This area is specified as the external address space by clearing the RAME bit in SYSCR to 0.
Figure 3.1 Address Map in Each Operating Mode of H8SX/1663 (1)
Rev.1.00 Jun. 07, 2006 Page 73 of 1102
REJ09B0294-0100