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RL78/F13, F14 CHAPTER 2 PIN FUNCTIONS

R01UH0368EJ0210 Rev.2.10 70

Dec 10, 2015

(q) CTXD0

This is a serial data output pins for the CAN.

(r) CRXD0

This is a serial data input pins for the CAN.

(s) TOOLTXD

This is a UART serial data output pin for the external device connection used during flash memory programming.

(t) TOOLRXD

This is a UART serial data input pin for the external device connection used during flash memory programming.

(u) SNZOUT3

This is a SNOOZE status output pin.

2.2.3 P30 to P34 (Port 3)

P30 to P34 function as an I/O port. These pins also function as A/D converter analog input, A/D converter reference

voltage input, external interrupt request input, serial interface slave select input, timer I/O, SNOOZE status output, and STOP

status output.

Only for P30 to P32, use of an on-chip pull-up resistor can be specified by pull-up resistor option register 3 (PU3).

For input to the P30 pin, a CMOS input buffer or a TTL input buffer can be selected using the port input mode register 3

(PIM3).

For the P30 pin, the input threshold level can be specified using the port input threshold control register 3 (PITHL3).

The following operation modes can be specified in 1-bit units.

(1) Port mode

P30 to P34 function as an I/O port. These pins can be set to input or output port in 1-bit units using port mode register 3

(PM3).

(2) Control mode

P30 to P34 function as A/D converter analog input, A/D converter reference voltage input, external interrupt request input,

serial interface slave select input, timer I/O, SNOOZE status output, and STOP status output.

(a) ANI0, ANI1

These are analog input pins of the A/D converter. For details, see 12.10 (5) Analog input (ANIn) pins.

(b) AV

REFP

This is a reference voltage (+ side) input pin of the A/D converter.

REFM

This is a reference voltage (- side) input pin of the A/D converter.

(d) INTP2, INTP7

These are external interrupt request input pins for which the valid edge (rising edge, falling edge, or both rising and

falling edges) can be specified.

(e) SSI00

This is a slave select input pin of the CSI00 (SPI00) serial interface.

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