SH7108 Datasheet, PDF (79/560 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Section 3 MCU Operating Modes
Section 3 MCU Operating Modes
3.1 Selection of Operating Modes
This LSI has four operating modes and four clock modes. The operating mode is determined by
the settings of MD3 to MD0, and FWP pins. Do not change these pins during LSI operation (while
power is on). Do not set these pins in the other way than the combination shown in table 3.1.
Table 3.1 Selection of Operating Modes
Pin Settings
Product Type
Mode
Mode No. FWP MD3 MD2 MD1 MD0 Name
On-Chip
ROM
SH7108
BusWidth SH7106
of CS0 SH7104
Space SH7101
SH7109
SH7107
SH7105
Mode 0 1 x x 0 0 MCU
Disabled 8 bits
⎯
extended
mode 0
Support
ed
Mode 1* 1 x x 0 1 MCU
Disabled ⎯
extended
mode 1
⎯
⎯
Mode 2 1 x x 1 0 MCU
Enabled Set by ⎯
extended
BCR1 in
mode 2
BSC
Support
ed
Mode 3 1 x x 1 1 Single-chip Enabled ⎯
mode
Support Support
ed
ed
Notes: The symbol x means “Don’t care”.
* This mode cannot be used for this LSI.
There are two modes as the MCU operating modes: MCU extended mode and single-chip mode.
The clock mode is selected by the input of MD2 and MD3 pins.
Rev.1.00 Sep. 18, 2008 Page 45 of 522
REJ09B0069-0100