SH7052 Datasheet, PDF (79/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

Section 3 Operating Modes
3.1 Operating Mode Selection
The SH7052F/SH7053F/SH7054F 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
SH7052F/SH7053F/SH7054F, and only the setting combinations shown in Table 3.1 should be
used. The PV_CC1 power supply voltage must be within the range shown in table 3.1.
Table 3.1 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
—
0/1 0
1
1
Mode Name
MCU expanded
mode
On-Chip
ROM
Disabled
Enabled
MCU single-chip
mode
Boot mode
Enabled
Enabled
User program
mode
Enabled
Programmer mode —
Area 0
Bus
Width
8 bits
PV_CC1 Voltage
3.3 V ±0.3 V
16 bits
Set by
BCR1
—
5.0 V ±0.5 V
Set by 3.3 V ±0.3 V
BCR1
—
5.0 V ±0.5 V
Set by 3.3 V ±0.3 V
BCR1
—
5.0 V ±0.5 V
—
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 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 20, ROM (SH7052F/SH7053F) and section 21, ROM (SH7054F).
Caution:
In the SH7052F/SH7053F/SH7054F expanded modes (modes 0, 1, and 2), the
guaranteed operating range of bus port power supply (port power supply 1: PV_CC1) in
the MCU expanded modes is 3.3 V ±0.3 V.
Since operation is not guaranteed in the MCU expanded modes on a voltage outside this
range, a voltage within this range must be used.
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