SH7055S Datasheet, PDF (109/1002 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

Section 4 Operating Modes
4.1 Operating Mode Selection
The SH7055SF has five operating modes that are selected by pins MD2 to MD0 and FWE. The
mode setting pins should not be changed during operation of the SH7055SF, and only the setting
combinations shown in table 4.1 should be used.
The PV_CC1 power supply voltage must be within the range shown in table 4.1.
Table 4.1 Operating Mode Selection
Operating
Pin Settings
Mode No. FWE MD2 MD1 MD0
Mode 0 0
1
0
0
Mode 1 0
1
0
1
Mode 2 0
1
1
0
Mode 3 0
1
1
1
Mode 4 1
1
0
0
Mode 5 1
1
0
1
Mode 6 1
1
1
0
Mode 7 1
1
1
1
Mode 8 1
0
0
1
Mode 9 1
0
0
1
—
0/1 0
1
1
Mode Name
MCU expanded
mode
Area 0
On-Chip Bus
ROM
Width PV 1 Voltage
CC
Disabled 8 bits 3.3 V ±0.3 V
16 bits
Enabled Set by
BCR1
MCU single-chip Enabled —
mode
5.0 V ±0.5 V
Boot mode
Enabled Set by 3.3 V ±0.3 V
BCR1
—
5.0 V ±0.5 V
User program
mode
Enabled Set by 3.3 V ±0.3 V
BCR1
—
5.0 V ±0.5 V
User boot mode Enabled Set by 3.3 V ±0.3 V
BCR1
—
5.0 V ±0.5 V
Programmer mode —
—
3.3 V ±0.3 V
There are two MCU operating modes: MCU single-chip mode and MCU expanded mode.
Modes in which the flash memory can be programmed are boot mode, user boot mode and user
program mode (the two on-board programming modes) and programmer mode in which
programming is performed with an EPROM programmer (a type which supports programming of
this device).
For details, see section 22, ROM.
Rev.2.0, 07/03, page 71 of 960