RL78/G15 CHAPTER 2 PIN FUNCTIONS
R01UH0959EJ0110 Rev.1.10 Page 45 of 765
Mar 7, 2023
2.3 Connection of Unused Pins
Table 2-2 shows the connections of unused pins.
Remark The pins mounted depend on the product. Refer to 1.3 Pin Configuration (Top View) and 2.1 Port
Function.
Table 2-2. Connections of Unused Pins
Pin Name I/O Recommended Connection of Unused Pins
P00 to P07 I/O Input: Independently connect to V
DD
or V
SS
via a resistor.
Output: Leave open.
P20 to P23 Input: Independently connect to V
DD
or V
SS
via a resistor.
Output: Leave open.
P40/TOOL0 Input: Independently connect to V
DD
via a resistor.
Output: Leave open.
P41 Input: Independently connect to V
DD
or V
SS
via a resistor.
Output: Leave open.
P121, P122 I/O Input: Independently connect to V
DD
or V
SS
via a resistor.
Output: Leave open.
P125/RESET
¯¯¯¯¯¯
I/O PORTSELB = 0:
Input: Independently connect to V
DD
via a resistor.
Output: Leave open.
PORTSELB = 1:
Leave open, or connect to V
DD
.
P137 Input Independently connect to V
DD
or V
SS
via a resistor.
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