HD64F2145 Datasheet, PDF (118/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Mode 3 (EXPE = 1)
Normal mode
Extended mode with
on-chip ROM enabled
H'0000
Mode 3 (EXPE = 0)
Normal mode
Single-chip mode
H'0000
On-chip ROM
On-chip ROM
H'DFFF
H'E080
External address
space
H'DFFF
H'E080
On-chip RAM*
H'EFFF
H'F000
H'F7FF
H'F800
H'FE4F
H'FE50
H'FEFF
H'FF00
H'FF7F
H'FF80
H'FFFF
External address
space
Reserved area
Internal I/O
registers 2
On-chip RAM
(128 bytes)*
Internal I/O
registers 1
H'EFFF
On-chip RAM
H'FE50
H'FEFF
H'FF00
H'FF7F
H'FF80
H'FFFF
Internal I/O
registers 2
On-chip RAM
(128 bytes)
Internal I/O
registers 1
Note: These areas can be used as an external address space by clearing bit RAME in SYSCR to 0.
Figure 3.8 Address Map for H8S/2148B (2)
Rev. 2.0, 08/02, page 78 of 788