Datasheet

CHAPTER 4 PORT FUNCTIONS
User’s Manual U18698EJ1V0UD
77
Table 4-2. Port Functions
Function Name I/O Function After Reset Alternate Function
P12 RxD0/KR3/<RxD6>
P13
I/O
Port 1.
2-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a software setting.
Input port
TxD0/KR4/<TxD6>
P20 SEG21/ANI0
Note
P21 SEG20/ANI1
Note
P22 SEG19/ANI2
Note
P23 SEG18/ANI3
Note
P24 SEG17/ANI4
Note
P25
I/O
Port 2.
6-bit I/O port.
Input/output can be specified in 1-bit units.
Digital
input port
SEG16/ANI5
Note
P31 TOH1/INTP3
P32 TOH0/MCGO
P33
TI000/RTCDIV/
RTCCL/BUZ/INTP2
P34
I/O
Port 3.
4-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a software setting.
Input port
TI52/TI010/TO00/
RTC1HZ/INTP1
P40 I/O
Port 4.
1-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a software setting.
Input port VLC3/KR0
P100, P101 I/O
Port 10.
2-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a software setting.
Input port SEG4, SEG5
P112 SEG6/TxD6
P113
I/O
Port 11.
2-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a software setting.
Input port
SEG7/RxD6
P120 I/O INTP0/EXLVI
P121 X1/OCD0A
P122 X2/EXCLK/OCD0B
P123 XT1
P124
Input
Port 12.
1-bit I/O port and 4-bit input port.
Only for P120, use of an on-chip pull-up resistor can be specified by a
software setting.
Input port
XT2
P140 to P143 I/O
Port 14.
4-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a software setting.
Input port SEG8 to SEG11
P150 to P153 I/O
Port 15.
4-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a software setting.
Input port SEG12 to SEG15
Note μ PD78F041x only.
Remark The functions within arrowheads (< >) can be assigned by setting the input switch control register (ISC).