M16C80 Datasheet, PDF (216/358 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/80 SERIES

M16C/80 Group
26. Programmable I/O Ports
100-pin version
Pull-up control register 3
b7 b6 b5 b4 b3 b2 b1 b0
0 0 00 0 0
Symbol
PUR3
Address
03DB16
Bit symbol
Bit name
PU30
P100 to P103 pull-up
PU31
P104 to P107 pull-up
Reserved bit
When reset
0016
Function
The corresponding port is pulled
high with a pull-up resistance
0 : Not pulled high
1 : Pulled high
Must always be set to "0"
RW
144-pin version
Pull-up control register 3
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PUR3
Address
03DB16
Bit
PUs3y0mbol
PU31
PU32
PU33
PU34
PU35
PU36
PU37
Bit
P100 to P1n0a3^mpeull-up
P104 to P107 pull-up
P110 to P113 pull-up
P114 pull-up
P120 to P123 pull-up
P124 to P127 pull-up
P130 to P133 pull-up
P134 to P137 pull-up
When reset
0016
Function
RW
The corresponding port is pulled
high with a pull-up resistance
0 : Not pulled high
1 : Pulled high
Pull-up control register 4 (Note)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PUR4
Address
03DC16
When reset
XXXX00002
Bit symbol
PU40
PU41
PU42
Bit name
P140 to P143 pull-up
P144 to P146 pull-up
P150 to P153 pull-up
Function
The corresponding port is pulled
high with a pull-up resistance
0 : Not pulled high
1 : Pulled high
PU43
P154 to P157 pull-up
Nothing is assigned.
When write, set "0". When read, their contents are “0”.
Note: This register exists in 144-pin version.
RW
Figure 26.14 Pull-up control register (2)
Rev.1.00 Aug. 02, 2005 ^{Page 205} of 329
REJ09B0187-0100