User's Manual U11919EJ3V0UM00
33
CHAPTER 2 PIN FUNCTIONS
2.1 List of Pin Functions
(1)
Port pins
Pin Name
Input/Output
Function
After Reset
Alternate Function
P00 to P07
Input/output
Port 0
8-bit I/O port
I/O specifiable in 1-bit units
When used as input port, on-chip pull-up resistor can be
connected by setting of the pull-up resistor option register (PUO).
LEDs can be driven directly.
Input
−
P10 to P17
Input/output
Port 1
8-bit I/O port
I/O specifiable in 1-bit units
When used as input port, on-chip pull-up resistor can be
connected by setting of the pull-up resistor option register (PUO).
LEDs can be driven directly.
Input
−
P20
SCK0/ASCK
P21
SO0/TxD
P22
Input/output
Port 2
3-bit I/O port
I/O specifiable in 1-bit units
When used as input port, on-chip pull-up resistor can be
connected by setting of the pull-up resistor option register (PUO).
LEDs can be driven directly.
Input
SI0/RxD
P30
INTP0
P31
INTP1
P32
Input/output
Port 3
3-bit I/O port
I/O specifiable in 1-bit units
When used as input port, on-chip pull-up resistor can be
connected by setting of the pull-up resistor option register (PUO).
LEDs can be driven directly.
Input
INTP2/CPT2
P40 to P47
Input/output
Port 4
8-bit I/O port
I/O specifiable in 1-bit units
When used as input port, on-chip pull-up resistor can be
connected by setting of the pull-up resistor option register (PUO).
LEDs can be driven directly.
Input
KR0 to KR7
P50
TI0/TO0
P51
TO2
P52, P53
Input/output
Port 5
4-bit I/O port
I/O specifiable in 1-bit units
When used as input port, on-chip pull-up resistor can be
connected by setting of the pull-up resistor option register (PUO).
LEDs can be driven directly.
Input
−
Содержание mPD789026 Subseries
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