9

µPD6P5

Data Sheet U14760EJ1V0DS00

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

Pin

Connection

Inside the Microcontroller

Outside the Microcontroller

KI/O

INPUT mode

—

Leave open

OUTPUT mode

High-level output

REM

—

S1/LED

OUTPUT mode (LED) setting

S0

OFF mode setting

Directly connect these pins

S2

—

to GND

KI

—

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.