Renesas RL78 Series User Manual

RL78/F13, F14 CHAPTER 2 PIN FUNCTIONS
R01UH0368EJ0210 Rev.2.10 68
Dec 10, 2015
2.2 Description of Pin Functions
The pins provided depend on the product. See 1.5 Pin Configurations, for details. This subchapter describes the pin
functions of the 100-pin products of RL78/F14 and the 80-pin products of RL78/F13 (CAN and LIN incorporated) as
examples.
2.2.1 P00 to P03 (Port 0)
P00 to P03 function as an I/O port. These pins also function as external interrupt request input, timer I/O, and real-time
clock correction clock output. P03 is provided only in the 100-pin products of RL78/F14.
Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 0 (PU0).
The following operation modes can be specified in 1-bit units.
(1) Port mode
P00 to P03 function as an I/O port. These pins can be set to input or output port in 1-bit units using port mode register 0
(PM0).
(2) Control mode
P00 to P03 function as external interrupt request input, real-time clock correction clock output, and timer I/O.
(a) INTP9
This is an external interrupt request input pin for which the valid edge (rising edge, falling edge, or both rising and
falling edges) can be specified.
(b) RTC1HZ
This is a real-time clock correction clock (1 Hz) output pin.
(c) TI04 to TI06
These are pins for inputting an external count clock/capture trigger to 16-bit timers.
(d) TO04 to TO06
These are timer output pins of 16-bit timers.
2.2.2 P10 to P17 (Port 1)
P10 to P17 function as an I/O port. These pins also function as external interrupt request input, real-time clock correction
clock output, serial interface data I/O, clock I/O, timer I/O, programming UART I/O, SNOOZE status output, LIN serial data
I/O, and CAN serial data I/O.
Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 1 (PU1).
For input to the P10, P11, P13, P14, P16, and P17 pins, a CMOS input buffer or a TTL input buffer can be selected using
the port input mode register 1 (PIM1).
For output from the P10 to P17 pins, CMOS output or N-ch open-drain output can be selected using the port output mode
register 1 (POM1).
For the P10, P11, P13, P14, P16, and P17 pins, the input threshold level can be specified using the port input threshold
control register 1 (PITHL1).
The following operation modes can be specified in 1-bit units.
(1) Port mode
P10 to P17 function as an I/O port. These pins can be set to input or output port in 1-bit units using port mode register 1
(PM1).
(2) Control mode
P10 to P17 function as external interrupt request input, real-time clock correction clock output, serial interface data I/O,
clock I/O, timer I/O, programming UART I/O, SNOOZE status output, LIN serial data I/O, and CAN serial data I/O.

Renesas RL78 Series Specifications

General

Brand	Renesas
Model	RL78 Series
Category	Computer Hardware
Language	English