HD64F3437TF16 Datasheet, PDF (90/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

3.4 Address Space Map in Each Operating Mode
Figures 3.1 and 3.2 show memory maps of the H8/3437, H8/3436, and H8/3434 in modes 1, 2,
and 3.
Mode 1
Expanded Mode without
On-Chip ROM
H'0000
H'004B
H'004C
Vector table
H'0000
H'004B
H'004C
Mode 2
Expanded Mode with
On-Chip ROM
Vector table
H'0000
H'004B
H'004C
Mode 3
Single-Chip Mode
Vector table
External address space
On-chip ROM
61,312 bytes
On-chip ROM
63,360 bytes
H'EF7F
H'EF80
External address space
H'F77F
H'F780
H'F77F
H'F780
H'FF7F
H'FF80
On-chip RAM*,
2,048 bytes
On-chip RAM*,
2,048 bytes
H'FF7F
H'FF80
H'FF87
External address space
H'FF88
On-chip register field
H'FFFF
H'FF7F
H'FF80
H'FF87
External address space
H'FF88
On-chip register field
H'FFFF
H'FF7F
H'FF88
H'FFFF
On-chip RAM,
2,048 bytes
On-chip register field
Note: * External memory can be accessed at these addresses when the RAME bit in the system
control register (SYSCR) is cleared to 0.
Figure 3.1 H8/3437 Address Space Map
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