F24 datasheet(28/210 Pages) RENESAS

28 / 210 page

RL78/F23, F24

2. PIN FUNCTIONS

R01DS0446EJ0120 Rev.1.20

Page 28 of 207

Dec 31, 2025

2.1.2 RL78/F23 80-pin Products

(1/2)

Function

Name

I/O

Function

After Reset

Alternate Function

P00

I/O

Port 0

Use of an on-chip pull-up resistor can be specified by a software setting.

Input port

(TI05)/(TO05)/INTP9

P01

(TI04)/(TO04)

P02

(TI06)/(TO06)

P10

I/O

Port 1

Input of P10, P11, P13, P14, P16, and P17 can be set to TTL input buffer.

Use of an on-chip pull-up resistor can be specified by a software setting.

Output from P10 to P17 can be set to N-ch open-drain output.

For input to P10, P11, P13, P14, P16, and P17, the threshold level can be

specified.

Input port

TI13/TO13/TRJO0/SCK10/SCL10

P11

TI12/TO12/(TRDIOB0)/SI10/

SDA10/RXD1

P12

TI11/TO11/(TRDIOD0)/INTP5/

SO10/TXD1/SNZOUT3

P13

TI04/TO04/TRDIOA0/TRDCLK0/

SI01/SDA01/LTXD0

P14

TI06/TO06/TRDIOC0/SCK01/

SCL01/LRXD0

P15

TI05/TO05/TRDIOA1/(TRDIOA0)/

(TRDCLK0)/SO00/TXD0/

TOOLTXD/RTC1HZ

P16

TI02/TO02/TRDIOC1/SI00/

SDA00/RXD0/TOOLRXD

P17

TI00/TO00/TRDIOB1/SCK00/

SCL00/INTP3

P30

I/O

Port 3

Input of P30 can be set to TTL input buffer.

P33 and P34 can be set to analog input.

Output from P32 can be set to N-ch open-drain output.

For input to P30 to P32, use of an on-chip pull-up resistor can be specified

by a software setting.

For input to P30, the threshold level can be specified.

Input port

TI01/TO01/TRDIOD1/SSI00/

INTP2/SNZOUT0

P31

STOPST/(INTP2)

P32

(SO11)/INTP7

P33

Analog input

port

AVREFP/ANI6

P34

AVREFM/ANI7

P40

I/O

Port 4

Use of an on-chip pull-up resistor can be specified by a software setting.

For input to P41 and P43, the threshold level can be specified.

Input port

TOOL0

P41

TI10/TO10/TRJIO0/TRD0RES/

(SI10)/(RXD1)/SNZOUT2

P42

(LTXD0)

P43

(LRXD0)

P44

(TI07)/(TO07)

P45

(TI10)/(TO10)

P46

(TI12)/(TO12)

P47

INTP13

P50

I/O

Port 5

Use of an on-chip pull-up resistor can be specified by a software setting.

For input to P50 and P52 to P54, the threshold level can be specified.

Input of P54 can be set to TTL input buffer.

Input port

(SSI01)/(INTP3)

P51

(SO01)/INTP11

P52

(SCK01)/(STOPST)

P53

(SI01)/INTP10

P54

(TI11)/(TO11)/SSI10

P55

(TI13)/(TO13)

P56

(SNZOUT1)

P57

(SNZOUT0)

P60

I/O

Port 6

Input of P62 and P63 can be set to TTL input buffer.

Use of an on-chip pull-up resistor can be specified by a software setting.

Output from P60 to P63 can be set to N-ch open-drain output.

For input to P60 to P63, the threshold level can be specified.

Input port

(TO01)/(SCK00)/(SCL00)

P61

(TO02)/(SI00)/(SDA00)/(RXD0)

P62

(TO03)/(SO00)/(TXD0)/SCLA0

P63

(TO07)/(SSI00)/SDAA0

P64

(SNZOUT3)

P65

(SNZOUT2)

P66

(TI00)/(TO00)

P67

(TI02)/(TO02)

Remark Functions in parentheses in the above table can be assigned via settings in the peripheral I/O redirection

registers (PIORx). Only the STOPST function of P52 can be assigned via settings in the STOP status output

control register (STPSTC).

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