Hardware manual

ManualsBrandsRenesas ManualsComputer HardwareH8/325 Series

Rev. 3.0, 09/98, page 57 of 361

3.4 Address Space Map

Figures 3.1 to 3.3 show memory maps of the H8/338, H8/337, and H8/336 in modes 1, 2, and 3.

H'FFFF

H'FF88

H'FF87

H'FF80

H'FF7F

H'F780

H'F77F

H'0048

H'0047

H'0000

H'FFFF

H'FF88

H'FF87

H'FF80

H'FF7F

H'F780

H'F77F

H'FFFF

H'FF88

H'FF7F

H'F780

H'C000

H'BFFF

H'0048

H'0047

H'0000

H'0048

H'0047

H'0000

Mode 1

Expanded Mode without

On-Chip ROM

Mode 2

Expanded Mode with

On-Chip ROM

Mode 3

Single-Chip Mode

Vector Table

On-Chip ROM,

48k bytes

Vector TableVector Table

External Address Space

On-Chip RAM*,

2k bytes

Note: * External memory can be accessed at these addresses when the RAME bit in the system control register

SYSCR) is cleared to 0.

H'BFFF

On-Chip ROM,

48k bytes

External Address Space

On-Chip RAM*,

2k bytes

On-Chip RAM*,

2k bytes

External Address Space

On-Chip Register Field

On-Chip Register Field On-Chip Register Field

Figure 3.1 H8/338 Address Space Map