I/O Ports; Overview - Renesas RX100 Series User Manual

RX13T Group
17.

I/O Ports

17.1

Overview

The I/O ports function as a general I/O port, an I/O pin of a peripheral module, or an input pin for an interrupt.
Some of the pins are also configurable as an I/O pin of a peripheral module or an input pin for an interrupt. All pins
function as input pins immediately after a reset, and pin functions are switched by register settings. The setting of each
pin is specified by the registers for the corresponding I/O port and on-chip peripheral modules.
Each port has the port direction register (PDR) that selects input or output direction, the port output data register (PODR)
that holds data for output, the port input data register (PIDR) that indicates the pin states, the open drain control register
y (ODRy, y = 0, 1) that selects the output type of each pin, the pull-up control register (PCR) that controls on/off of the
input pull-up MOS, the drive capacity control register (DSCR) that selects the drive capacity, and the port mode register
(PMR) that specifies the pin function of each port.
For details on the PMR register, see section 18, Multi-Function Pin Controller (MPC) .
The configuration of the I/O ports differs depending on the package. Table 17.1 lists the specifications of I/O ports, and
Table 17.2 list the port functions.
Table 17.1 Specifications of I/O Ports
Port
PORT1 P10, P11
PORT2 P22 to P24
PORT3 P36, P37
PORT4 P40 to P47
PORT7 P70 to P76
PORT9 P93, P94
PORTA PA2, PA3
PORTB PB0 to PB7
PORTD PD3 to PD6
PORTE PE2
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
Package
Number
48 Pins
Total of Pins
32 Pins
of Pin
2 P11
3 —
2 P36, P37
8 P40 to P44
7 P71 to P76
2 P93, P94
2 —
8 PB0 to PB3, PB6, PB7
4 —
1 PE2
39
17. I/O Ports
Package
Number
of Pin
Total of Pins
Page 293 of 1041
1
—
2
5
6
2
—
6
—
1
23