µPD6P5
1.4 Dealing with Unused Pins
The following connections are recommended for unused pins in the normal operation mode.
Table 1-1. Connections for Unused Pins
KI/O
REM
S1/LED
S0
S2
KI
Pin
INPUT mode
OUTPUT mode
Connection
Inside the Microcontroller
Outside the Microcontroller
—
Leave open
High-level output
—
OUTPUT mode (LED) setting
OFF mode setting
—
Directly connect these pins
to GND
—
Caution The I/O mode and the terminal output level are recommended to be fixed by setting them
repeatedly in each loop of the program.
1.5 Notes on Using KI Pin at Reset
In order to prevent malfunction, be sure to input a low level to more than one of pins KI0 to KI3 when POC is released
due to supply voltage startup.
Data Sheet U14760EJ1V0DS00
9