H8SLASH3003 datasheet(80/715 Pages) RENESAS

80 / 715 page

3.4 Operating Mode Descriptions

3.4.1 Mode 1

Address pins A19 to A0 are enabled, permitting access to a maximum 1-Mbyte address space. The

initial bus mode after a reset is 8 bits, with 8-bit access to all areas. If at least one area is

designated for 16-bit access in ABWCR, the bus mode switches to 16 bits.

3.4.2 Mode 2

Address pins A19 to A0 are enabled, permitting access to a maximum 1-Mbyte address space. The

initial bus mode after a reset is 16 bits, with 16-bit access to all areas. If all areas are designated

for 8-bit access in ABWCR, the bus mode switches to 8 bits.

3.4.3 Mode 3

Address pins A23 to A0 are enabled, permitting access to a maximum 16-Mbyte address space.

The initial bus mode after a reset is 8 bits, with 8-bit access to all areas. If at least one area is

designated for 16-bit access in ABWCR, the bus mode switches to 16 bits.

3.4.4 Mode 4

Address pins A23 to A0 are enabled, permitting access to a maximum 16-Mbyte address space.

The initial bus mode after a reset is 16 bits, with 16-bit access to all areas. If all areas are

designated for 8-bit access in ABWCR, the bus mode switches to 8 bits.

H8/3003 Datasheet(PDF) 80 Page - Renesas Technology Corp