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參數(shù)資料
| 型號： | UPD66P04BGS |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION |
| 中文描述： | 4位單片機(jī)的紅外遙控傳輸 |
| 文件頁數(shù)： | 8/32頁 |
| 文件大?。?/td> | 164K |
| 代理商： | UPD66P04BGS |
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8
μ
PD66P04B
Data Sheet U13596EJ2V0DS00
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
K
I/O
INPUT mode
—
Open
OUTPUT mode
High-level output
REM
—
S
1
/LED
OUTPUT mode (LED) setting
S
0
OFF mode setting
Directly connected to GND
K
I
—
RESET
Note
Built-in POC circuit
Open
Note
If the circuit is an applied one requiring high reliability, be sure to design it in such a manner that the RESET
signal is entered externally.
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 K
I
Pin at Reset
In order to prevent malfunction, be sure to input a low level to more than one of pins K
I0
to K
I3
when reset is
released (when RESET pin changes from low level to high level, or POC is released due to supply voltage startup).
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