m30833fjgp Renesas Electronics Corporation., m30833fjgp Datasheet - Page 71

• Manufacturer Part Number: m30833fjgp
• Description: Renesas 16/32-bit Single-chip Microcomputer M16c Family / M32c/80 Series
• Manufacturer: Renesas Electronics Corporation.

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R
M
6. Processor Mode
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E
6.1 Types of Processor Mode
6.2 Setting Processor Mode
3
. v
J
2
0
Single-chip mode, memory expansion mode, or microprocessor mode can be selected as processor mode.
Pin functions, memory map and accessible space vary depending on the selected processor mode.
6.1.1 Single-chip Mode
6.1.2 Memory Expansion Mode
6.1.3 Microprocessor Mode
The processor mode is set by the combination of CNV
register. Do not set the PM01 to PM00 bits to "10
If the PM01 to PM00 bits are rewritten, the mode corresponding to the PM01 to PM00 bits is selected
regardless of CNV
Do not change the PM01 to PM00 bits when the PM02 to PM07 bits in the PM0 register are being rewritten.
Do not enter microprocessor mode while the CPU is executing a program in the internal ROM . Do not enter
single-chip mode while the CPU is executing a program in an external memory space.
Figures 6.1 and 6.2 show the PM0 register and PM1 register. Figure 6.3 shows a memory map in each
processor mode.
6.2.1 Applying V
6.2.2 Applying V
1
C
9
3 .
B
8 /
NOTE
M32C/83T can be used in single-chip mode.
M32C/83T cannot be used in memory expansion mode and microprocessor mode.
In single-chip mode, internal memory space (the SFR, internal RAM and internal ROM) can be accessed.
All I/O ports can be used.
In memory expansion mode, both external memory space and internal memory space can be accessed .
Some pins function as pins for bus control signals. The BYTE pin and register settings determine how
many pins are assigned for these pin functions. Refer to 7. Bus for details.
In microprocessor mode, SFR, internal RAM and external memory space can be accessed. Internal ROM
cannot be accessed.
Some pins function as pins for bus control signals. The BYTE pin and register settings determine how
many pins are assigned for these pin functions. (Refer to 7. Bus for details.)
The microcomputer enters single-chip mode after reset. Set the PM01 to PM00 bits to "01
expansion mode) to switch to memory expansion mode after the microcomputer starts operating.
The microcomputer enters microprocessor mode after reset.
When using the flash memory version, apply V
0
1
3
0
3
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4
a
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n
3 .
1
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, 1
3
p
1
2
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0
0
3
6
2
C
SS
8 /
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, 3
pin level.
SS
CC
M
to CNV
to CNV
3
2
C
f o
8 /
4
3
8
) T
8
SS
SS
Pin
Pin
CC
2
".
to P5
SS
pin and the PM01 to PM00 bit settings in the PM0
5
(HOLD) as well as to the CNV
SS
6. Processor Mode
.
2
" (memory