M32C Datasheet, PDF (325/441 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Udnedveerlopment ^{Rev.B2 for proof reading}
Programmable I/O Port
Mitsubishi Microcomputers
M32C/83 group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Pull-up control register 0 ^(Note)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PUR0
Address
03F016
When reset
000000002
Bit
symbol
Bit name
PU00 P00 to P03 pull-up
Function
0 : Not pulled high
1 : Pulled high
RW
PU01 P04 to P07 pull-up
0 : Not pulled high
1 : Pulled high
PU02 P10 to P13 pull-up
PU03 P14 to P17 pull-up
0 : Not pulled high
1 : Pulled high
0 : Not pulled high
1 : Pulled high
PU04 P20 to P23 pull-up
0 : Not pulled high
1 : Pulled high
PU05 P24 to P27 pull-up
0 : Not pulled high
1 : Pulled high
PU06 P30 to P33 pull-up
0 : Not pulled high
1 : Pulled high
PU07 P34 to P37 pull-up
0 : Not pulled high
1 : Pulled high
Note: Since P0 to P5 operate as the bus in memory expansion mode and microprocessor mode,
do not set the pull-up control register. However, it is possible to select pull-up resistance
presence to the usable port as I/O port by setting.
Pull-up control register 1 ^(Note)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PUR1
Address
03F116
When reset
XXXX00002
Bit
symbol
Bit name
PU10 P40 to P43 pull-up
PU11 P44 to P47 pull-up
PU12 P50 to P53 pull-up
PU13 P54 to P57 pull-up
Function
0 : Not pulled high
1 : Pulled high
0 : Not pulled high
1 : Pulled high
0 : Not pulled high
1 : Pulled high
0 : Not pulled high
1 : Pulled high
RW
Noting is assigned. When write, set to "0".
When read, their contents are indeterminate.
Note: Since P0 to P5 operate as the bus in memory expansion mode and microprocessor mode,
do not set the pull-up control register. However, it is possible to select pull-up resistance
presence to the usable port as I/O port by setting.
Figure 1.29.15. Pull-up control register (1)
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