RL78 datasheet(19/146 Pages) RENESAS

19 / 146 page

RL78/F15

2. PIN FUNCTIONS

R01DS0461EJ0110 Rev.1.10

Page 19 of 143

Jan 30, 2026

(3/3)

Function

Name

I/O

Function

After Reset

Alternate Function

P110

I/O

Port 11

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

Input port

TI20/TO20

P111

TI21/TO21

P112

TI22/TO22

P113

TI23/TO23

P114

TI24/TO24

P115

TI25/TO25

P116

TI26/TO26

P117

TI27/TO27

P120

I/O

Port 12

Input of P125 can be set to TTL input buffer.

P120 and P125 can be set to analog input.

For P120 and P125 to P127, use of an on-chip pull-up resistor can be

specified by a software setting.

Output from P120 can be set to N-ch open-drain output.

For input to P125, the threshold level can be specified.

Analog input

port

ANI25/TI07/TO07/TRDIOD0/

SO01/INTP4

P121

Input

Input port

P122

X2/EXCLK

P123

XT1

P124

XT2/EXCLKS

P125

I/O

Analog input

port

ANI24/TI03/TO03/TRDIOB0/

SSI01/INTP1/SNZOUT1

P126

Input port

(TI01)/(TO01)

P127

(TI03)/(TO03)

P130

Output

Port 13

For P131 to P136, use of an on-chip pull-up resistor can be specified by

a software setting.

Output port

RESOUT

P131

I/O

Input port

INTP14

P132

P133

P134

P135

P136

P137

Input

Input port

INTP0

P140

I/O

Port 14

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

Input port

PCLBUZ0/(TI20)/(TO20)

P141

(TI21)/(TO21)

P142

(TI22)/(TO22)

P143

(TI23)/(TO23)

P144

(TI24)/(TO24)

P145

(TI25)/(TO25)

P146

(TI26)/(TO26)

P147

(TI27)/(TO27)

P150

I/O

Port 15

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

For input to P150, P152 to P154 and P156, the threshold level can be

specified.

Input port

(SSI11)

P151

(SO11)/SO21

P152

(SI11)/SI21

P153

(SCK11)/SCK21

P154

(SNZOUT7)/LRXD2

P155

(SNZOUT6)/LTXD2

P156

(SNZOUT5)/SI20/RXD2

P157

(SNZOUT4)/SO20/TXD2

P160

I/O

Port 16

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

Input port

P161

P162

P163

P164

P165

P166

P167

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

registers (PIOR).

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