SH7047 Datasheet, PDF (87/764 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTMRISC engine Family/SH7000 Series

3.3 Explanation of Operating Modes
3.3.1 Mode 0 (MCU extension mode 0)
CS0 area becomes an external memory space with 8-bit bus width in this mode.
3.3.2 Mode 1 (MCU extension mode 1)
This mode is not supported in this LSI.
3.3.3 Mode 2 (MCU extension mode 2)
The on-chip ROM is active and CS0 area 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.
3.3.5 Clock Mode
The input waveform frequency can be used as is, doubled or quadrupled as system clock
frequency in mode 0 to mode 3.
Rev. 2.00, 09/04, page 47 of 720