SH7211 Datasheet, PDF (81/1228 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family

Section 3 MCU Operating Modes
3.3 Operating Modes
3.3.1 Mode 0 (MCU Extension Mode 0)
In this mode, CS0 space becomes external memory spaces with 16-bit bus width.
3.3.2 Mode 1 (MCU Extension Mode 1)
In this mode, CS0 space becomes external memory spaces with 8-bit bus width.
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. 2.00 May. 08, 2008 Page 57 of 1200
REJ09B0344-0200