SH7108 Datasheet, PDF (81/560 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Section 3 MCU Operating Modes
3.3 Explanation of Operating Modes
3.3.1 Mode 0 (MCU Extended Mode 0)
The CS0 space becomes an external memory space with 8-bit bus width in mode 0. This mode is
not supported in the SH7108/SH7106/SH7104/SH7101.
3.3.2 Mode 1 (MCU Extended Mode 1)
This mode is not supported in this LSI.
3.3.3 Mode 2 (MCU Extended Mode 2)
The on-chip ROM is enabled and the CS0 space can be used in mode 2. This mode is not
supported in the SH7108/SH7106/SH7104/SH7101.
3.3.4 Mode 3 (Single-Chip Mode)
All ports can be used in mode 3, however the external address cannot be used. The
SH7108/SH7106/SH7104/SH7101 supports only this mode.
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.1.00 Sep. 18, 2008 Page 47 of 522
REJ09B0069-0100