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參數(shù)資料
| 型號(hào)： | LC7574 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | 1/2 Duty VFD Driver with Key Input Function |
| 中文描述： | 1 / 2的責(zé)任VFD驅(qū)動(dòng)器與關(guān)鍵輸入功能 |
| 文件頁(yè)數(shù)： | 15/18頁(yè) |
| 文件大?。?/td> | 308K |
| 代理商： | LC7574 |
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Output Pin States during the Reset Period (when BLK is low)
Notes: 1. The state of this pin is undefined after power has been applied until the sleep control data (S0 and S1) are transferred.
2. Since this pin is an open-drain output, a pull-up resistor (between 1 and 10 k
) is required. It remains high during the reset period even if the
controller attempts to read the key data.
Sample Application Circuit
Note
*
: Since DO is an open-drain output, a pull-up resistor is required. Select a value in the range 1 to 10 k
that is most appropriate for the capacitance
of the external lines so that the waveform is not distorted.
Notes on the Segment and Digit Waveforms
The segment waveform is somewhat deformed due to the VFD panel itself and the circuit wiring. Furthermore, if a digit
waveform such as digit waveform 1 in which no dimming is applied is used, the display will glow dimly. Therefore,
applications must take this waveform deformation into account and apply adequate dimming such as that shown in digit
waveform 2 so that this phenomenon does not occur.
No. 6142-15/18
LC75742E, LC75742W
Output pin
State during reset
S1 to S41
L
G1, G2
L
KS1 to KS5
X
*
1
KS6
H
DO
H
*
2
From the controller
Key matrix with
up to 30 keys
To the controller
To the controlle
power supply
V
Segment waveform
Digit waveform 1
Digit waveform 2
Figure 6
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LC75741 | 1/2 Duty Driver for Frequency Displays |
| LC75741E | 1/2 Duty Driver for Frequency Displays |
| LC75742E | RES 36K OHM 1/8W 5% 0805 SMD |
| LC75742W | 1/2 Duty VFD Driver with Key Input Function |
| LC75750W | 1/3 Duty VFD Driver(1/3占空VFD顯示驅(qū)動(dòng)器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC75741 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1/2 Duty Driver for Frequency Displays |
| LC75741E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1/2 Duty Driver for Frequency Displays |
| LC75741W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1/2 Duty Driver for Frequency Displays |
| LC75742E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1/2 Duty VFD Driver with Key Input Function |
| LC75742W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1/2 Duty VFD Driver with Key Input Function |
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