RL78/G13 CHAPTER 2 PIN FUNCTIONS
R01UH0146EJ0100 Rev.1.00 72
Sep 22, 2011
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Function Name I/O Function After Reset Alternate Function
P70 KR0/SCK21/SCL21
P71 KR1/SI21/SDA21
P72 KR2/SO21
P73 KR3
P74 KR4/INTP8
P75 KR5/INTP9
P76 KR6/INTP10/(RxD2)
P77
I/O
Port 7.
8-bit I/O port.
Output of P71 and P74 can be set to N-ch open-drain output
(V
DD tolerance).
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Input port
KR7/INTP11/(TxD2)
P80 (SCK10)/(SCL10)
P81 (SI10)/(RxD1)/(SDA10)
P82 (SO10)/(TxD1)
P83
−
P84 (INTP6)
P85 (INTP7)
P86 (INTP8)
P87
I/O
Port 8.
8-bit I/O port.
Input of P80 and P81 can be set to TTL input buffer.
Output of P80 to P82 can be set to N-ch open-drain output
(V
DD tolerance).
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
(INTP9)
P90
−
P91
−
P92
−
P93
−
P94
−
P95 SCK11/SCL11
P96 SI11/SDA11
P97
I/O
Port 9.
8-bit I/O port.
Output of P96 can be set to N-ch open-drain output (V
DD
tolerance).
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Input port
SO11
P100
Analog input
port
ANI20
P101
−
P102 TI06/TO06
P103 TI14/TO14
P104 TI15/TO15
P105 TI16/TO16
P106
I/O
Port 10.
7-bit I/O port.
P100 can be set to analog input.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Input port
TI17/TO17
P110 (INTP10)
P111 (INTP11)
P112
−
P113
−
P114
Input port
−
P115 ANI26
P116 ANI25
P117
I/O
Port 11.
8-bit I/O port.
P115 to P117 can be set to analog input.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Analog input
port
ANI24
Remark Functions in parentheses in the above figure can be assigned via settings in the peripheral I/O redirection
register (PIOR).
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