Cpu Operating Modes - Hitachi F-ZTAT H8/3039 Series Hardware Manual

2.2 CPU Operating Modes

The H8/300H CPU has two operating modes: normal and advanced. Normal mode supports a
maximum 64-kbyte address space. Advanced mode supports up to 16 Mbytes. See figure 2-1.
Unless specified otherwise, all descriptions in this manual refer to advanced mode.
CPU operating modes
Normal mode
Advanced mode
Figure 2 -1 CPU Operating Modes
Maximum 64 kbytes, program
and data areas combined
Maximum 16 Mbytes, program
and data areas combined
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