UPD6133GS NEC [NEC], UPD6133GS Datasheet - Page 8
UPD6133GS
Manufacturer Part Number
UPD6133GS
Description
4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION
Manufacturer
NEC [NEC]
Datasheet
1.UPD6133GS.pdf
(64 pages)
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1.3 Dealing with Unused Pins
8
The following connections are recommended for unused pins.
Note If the circuit is an applied one requiring high reliability, be sure to design it in such a manner that the RESET
Caution The I/O mode and the terminal output level are recommended to be fixed by setting them
signal is entered externally.
repeatedly in each loop of the program.
K
REM
S
S
K
RESET
I/O
1
0
I
/LED
Note
Pin
INPUT mode
OUTPUT mode
Table 1-1. Connections for Unused Pins
High-level output
OUTPUT mode (LED) setting
OFF mode setting
Built-in POC circuit
Data Sheet U10454EJ6V0DS00
Inside the microcontroller
—
—
—
Connection
Open
Directly connected to GND
Open
Outside the microcontroller
PD6133, 6134