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參數(shù)資料
| 型號(hào)： | LC85632 |
| 元件分類： | 時(shí)鐘及定時(shí) |
| 英文描述： | LED CLOCK, PDIP30 |
| 封裝： | DIP-30 |
| 文件頁(yè)數(shù)： | 21/34頁(yè) |
| 文件大?。?/td> | 394K |
| 代理商： | LC85632 |
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LC85632
AC Input
* 50/60 Hz INPUT [Pin 27]
Input
AC input (f = 50 Hz/60 Hz)
(1) The AC input should be 50 or 60 Hz. This input uses the 50/60 Hz INPUT pin. This input is used as the reference
clock during normal operation.
(2) AC input to the 50/60 Hz INPUT pin
We recommend the circuit shown as an example in figure 21. Figure 22 shows the input waveform when this circuit
is used.
The input threshold voltage for the 50/60 Hz INPUT pin is set to a voltage close to the VDD voltage. Since the
display drive phase is generated from the AC waveform input to the 50/60 Hz INPUT pin, it is important to input the
AC waveform centered around the VDD voltage to prevent creating an unbalanced display duty.
Note that the overdrive portion of the input waveform that exceeds the VDD and VSS voltages (indicated by a broken
line in figure 22) is clipped by clamping diodes built into the 50/60 Hz INPUT pin, and the actual waveform
becomes that shown in figure 22.
Figure 21 Recommended Circuit for AC Waveform Input
Figure 22 AC Input Waveform
No. 4659-28/34
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