SH7080 Datasheet, PDF (113/1644 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 3 MCU Operating Modes
Section 3 MCU Operating Modes
3.1 Selection of Operating Modes
This LSI has four MCU operating modes and three on-chip flash memory programming modes.
The operating mode is determined by the setting of FWE, MD1, and MD0 pins. Table 3.1 shows
the allowable combinations of these pin settings; do not set these pins in the other way than the
shown combinations.
When power is applied to the system, be sure to conduct power-on reset.
The MCU operating mode can be selected from MCU extension modes 0 to 2 and single chip
mode. For the on-chip flash memory programming mode, boot mode, user boot mode, and user
program mode which are on-chip programming modes are available.
Table 3.1 Selection of Operating Modes
Pin Setting
Bus Width of CS0 Space
Mode No. FWE MD1 MD0 Mode Name
On-Chip ROM SH7083 SH7084 SH7085 SH7086
Mode 0 0
0
0
MCU extension mode 0 Not active 8
8
16
16
Mode 1 0
0
1
MCU extension mode 1 Not active 16
16
32
32
Mode 2 0
1
0
MCU extension mode 2 Active
Set by CS0BCR in BSC
Mode 3 0
1
1
Single chip mode
Active

Mode 4* 1
0
0
Boot mode
Active

Mode 5* 1
0
1
User boot mode
Active
Set by CS0BCR in BSC
Mode 6* 1
1
0
User programming
Mode 7* 1
1
1
mode
Note: * Flash memory programming mode.
Active
Set by CS0BCR in BSC
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Rev. 3.00 May 17, 2007 Page 55 of 1582
REJ09B0181-0300