RL78/G15 CHAPTER 2 PIN FUNCTIONS
R01UH0959EJ0110 Rev.1.10 Page 42 of 765
Mar 7, 2023
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Function
Name
Pin Type I/O
After Reset
Release
Alternate Function Function
P121 7-2-2 I/O Input port X1/TI07/TO07/(INTP3) Port 12.
3-bit I/O port.
Use of an on-chip pull-up resistor can be
specified by a software setting at P121, P122,
and P125.
P125 is also used for the input pin for external
reset (RESET
¯¯¯¯¯¯
).
To use the pin for external reset, set the
PORTSELB bit in the option byte (000C1H) to
1.
P122
X2/EXCLK/TI05/TO05/
(INTP2)
P125 3-2-1
RESET
¯¯¯¯¯¯
/INTP1/(VCOUT0)/
(VCOUT1)/(SI01)
P137 2-1-2 Input Input port INTP0/TI00 Port 13.
1-bit input only port.
Note 1. Setting digital or analog to each pin can be done in the port mode control registers 0, 2 (PMC0, PMC2) (can
be set in 1-bit units).
Remark Functions in parentheses can be assigned via settings in the peripheral I/O redirection registers 0 to 3
(PIOR0 to PIOR3). Refer to Figure 4-6 Format of Peripheral I/O Redirection Registers 0 to 3 (PIOR0 to
PIOR3).
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