HD64F3048F16 Datasheet, PDF (60/903 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 2 CPU
2.3 Address Space
The maximum address space of the H8/300H CPU is 16 Mbytes. The H8/3048B Group has
various operating modes (MCU modes), some providing a 1-Mbyte address space, the others
supporting the full 16 Mbytes.
Figure 2.2 shows the address ranges of the H8/3048B Group. For further details see section 3.6,
Memory Map in Each Operating Mode.
The 1-Mbyte operating modes use 20-bit addressing. The upper 4 bits of effective addresses are
ignored.
H'00000
H'000000
H'FFFFF
H'FFFFFF
a. 1-Mbyte modes
b. 16-Mbyte modes
Figure 2.2 Memory Map
Rev. 3.00 Sep 27, 2006 page 32 of 872
REJ09B0325-0300