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參數(shù)資料
| 型號： | 6P8B |
| 廠商： | NEC Corp. |
| 英文描述： | MOS INTEGRATED CIRCUIT 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION |
| 中文描述： | 馬鞍山集成電路4位單片機的紅外遙控傳輸 |
| 文件頁數(shù)： | 38/95頁 |
| 文件大小： | 692K |
| 代理商： | 6P8B |
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38
μ
PD6P8, 6P8A, 6P8B
Data Sheet U17848EJ3V0DS
8. POC CIRCUIT
The POC circuit monitors the power supply voltage and applies an internal reset to the microcontroller when the
battery is replaced.
Cautions 1. There are cases in which the POC circuit cannot detect a low power supply voltage of less
than 1 ms. Therefore, if the power supply voltage has become low for a period of less than
1 ms, the POC circuit may malfunction because it does not generate an internal reset signal.
2. Clock oscillation is stopped by the resonator due to low power supply voltage before the
POC circuit generates the internal reset signal. In this case, malfunction may result when
the power supply voltage is recovered after the oscillation is stopped. This type of
phenomenon takes place because the POC circuit does not generate an internal reset signal
(because the power supply voltage recovers before the low power supply voltage is
detected) even though the clock has stopped. If, by any chance, a malfunction has taken
place, remove the battery for a short time and put it back. In most cases, normal operation
will be resumed.
3. In order to prevent malfunction, be sure to input a low level to one or more of pins K
I0
to
K
I3
when POC is released due to supply voltage rising (Can be left open. When open, leave
the pull-down resistor connected).
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