M16C30_02 Datasheet, PDF (144/178 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Programmable I/O Port
Mitsubishi microcomputers
M16C / 30 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Pull-up control register 0 (Note)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PUR0
Address
03FC16
When reset
0016
Bit symbol
PU00
PU01
PU02
PU03
Bit name
P00 to P03 pull-up
P04 to P07 pull-up
P10 to P13 pull-up
P14 to P17 pull-up
Function
The corresponding port is pulled
high with a pull-up resistor
0 : Not pulled high
1 : Pulled high
RW
PU04
P20 to P23 pull-up
PU05
P24 to P27 pull-up
PU06
P30 to P33 pull-up
PU07
P34 to P37 pull-up
Note : In memory expansion and microprocessor mode, the content of this register
can be changed, but the pull-up resistance is not connected.
Pull-up control register 1
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PUR1
Address
03FD16
When reset
0016 (Note 2)
Bit symbol
PU10
PU11
PU12
PU13
Bit name
Function
P40 to P43 pull-up (Note 3) _{The corresponding port is pulled}
P44 to P47 pull-up
high with a pull-up resistor
P50 to P53 pull-up (Note 3)
0 : Not pulled high
1 : Pulled high
P54 to P57 pull-up (Note 3)
RW
PU14
P60 to P63 pull-up
PU15
P64 to P67 pull-up
PU16
P72 to P73 pull-up (Note 1)
PU17
P74 to P77 pull-up
Note 1: Since P70 and P71 are N-channel open drain ports, pull-up is not available for them.
Note 2: When the VCC level is being impressed to the CNVSS terminal, this register becomes
to 0216 when reset (PU11 becomes to “1”).
Note 3: In memory expansion and microprocessor mode, the content of these bits can be
changed, but the pull-up resistance is not connected.
Pull-up control register 2
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PUR2
Address
03FE16
When reset
0016
Bit symbol
Bit name
PU20
P80 to P83 pull-up
PU21
PU22
P84 to P87 pull-up
(Except P85)
P90 to P93 pull-up
Function
The corresponding port is pulled
high with a pull-up resistor
0 : Not pulled high
1 : Pulled high
PU23
PU24
P94 to P97 pull-up
P100 to P103 pull-up
PU25
P104 to P107 pull-up
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to be “0”.
RW
Figure 1.20.8. Pull-up control register
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