SH7080_09 Datasheet, PDF (117/1622 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family

Section 3 MCU Operating Modes
3.3 Operating Modes
3.3.1 Mode 0 (MCU Extension Mode 0)
CS0 space becomes external memory spaces with 8-bit bus width in SH7083/SH7084 or 16-bit
bus width in SH7085/SH7086.
3.3.2 Mode 1 (MCU Extension Mode 1)
CS0 space becomes external memory spaces with 16-bit bus width in SH7083/SH7084 or 32-bit
bus width in SH7085/SH7086.
3.3.3 Mode 2 (MCU Extension Mode 2)
The on-chip ROM is active and CS0 space can be used in this mode.
3.3.4 Mode 3 (Single Chip Mode)
All ports can be used in this mode, however the external address cannot be used.
Rev. 4.00 Dec. 15, 2009 Page 57 of 1558
REJ09B0181-0400