HD6433308 Datasheet, PDF (37/349 Pages) Hitachi Semiconductor – Hitachi Single-Chip MicroComputer

Mode 1 (on-chip ROM disabled) Mode 2 (on-chip ROM enabled)
Mode 3 (single-chip mode)
H'0000
H'003D
H'003E
Vector table
H'0000
H'003D
H'003E
Vector table
H'0000
H'003D
H'003E
Vector table
On-chip ROM,
16K bytes
On-chip ROM,
16K bytes
External address space ^H'3FFF
H'4000
H'3FFF
External address space
H'FD7F
H'FD80
H'FD7F
H'FD80
H'FD80
On-chip RAM,
512 bytes*
On-chip RAM,
512 bytes*
On-chip RAM,
512 bytes
H'FF7F
H'FF80
H'FF8F
H'FF90
H'FFA7
H'FFA8
H'FFAF
H'FFB0
H'FFFF
External address space
On-chip register field
External address space
On-chip register field
H'FF7F
H'FF80 _{External address space}
H'FF8F
H'FF90
On-chip register field
H'FFA7
H'FFA8
External address space
H'FFAF
H'FFB0
On-chip register field
H'FFFF
H'FF7F
H'FF90
H'FFA7
H'FFB0
H'FFFF
On-chip register field
On-chip register field
Figure 2-1. Address Space Map
* External memory can be accessed at these addresses when the RAME bit in the system control
register (SYSCR) is cleared to "0".
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