R01UH0823EJ0100 Rev.1.00
Page 431 of 1823
Jul 31, 2019
RX23W Group
21. I/O Ports
Specifying input pull-up, open-drain output, switching of drive capacity, or 5-V tolerance is available for other signals on
pins that also function as general I/O pins.
Table 21.2
Port Functions
Port
Pin
Input Pull-up
Open Drain Output
Drive Capacity Switching
5-V Tolerant
PORT0
P03, P05, P07
—
Fixed to normal output
—
PORT1
P16, P17
P14, P15
—
PORT2
P21, P22, P25 to P27
—
PORT3
P30, P31
P35
—
—
—
—
P36, P37
Fixed to normal output
—
PORT4
P40 to P47
—
Fixed to normal output
—
PORTB
PB0, PB1, PB3, PB7
—
PB5
PORTC
PC0, PC2 to PC7
—
PORTD
PD3
—
—
PORTE
PE0 to PE4
—
PORTJ
PJ3
—