UPD65MC NEC, UPD65MC Datasheet - Page 8
UPD65MC
Manufacturer Part Number
UPD65MC
Description
4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION
Manufacturer
NEC
Datasheet
1.UPD65MC.pdf
(64 pages)
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1.3 Dealing with Unused Pins
8
The following connections are recommended for unused pins.
Caution The I/O mode and the terminal output level are recommended to be fixed by setting
K
REM
S
S
S
K
I/O
1
0
2
1
/LED
them repeatedly in each loop of the program.
Pin
INPUT mode
OUTPUT mode
Table 1-1. Connections for Unused Pins
High-level output
OUTPUT mode (LED) setting
OFF mode setting
Data Sheet U14380EJ2V0DS00
Inside the microcontroller
—
—
—
—
Connection
Leave open
Directly connect these
pins to GND
Outside the microcontroller
PD64A, 65