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參數(shù)資料
| 型號(hào)： | NT7704H-TABF4 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 240 Output LCD Segment/Common Driver |
| 中文描述： | LCD段輸出240 /通用驅(qū)動(dòng)程序 |
| 文件頁(yè)數(shù)： | 17/40頁(yè) |
| 文件大?。?/td> | 402K |
| 代理商： | NT7704H-TABF4 |
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NT7704
17
7. Precaution
Be careful when connecting or disconnecting the power
This LSI has a high-voltage LCD driver, so it may be permanently damaged by a high current, which may occur if voltage is
supplied to the LCD driver power supply while the logic system power supply is floating.
The details are as follows:
!
When connecting the power supply, connect the LCD driver power after connecting the logic system power. Furthermore,
when disconnecting the power, disconnect the logic system power after disconnecting the LCD driver power.
!
We recommend that you connect a serial resistor (50-100
) or fuse to the LCD driver power V
0
of the system as a current
limiting device. Also, set a suitable value of the resistor in consideration of LCD display grade.
In addition, when connecting the logic power supply, the logic condition of the LSI inside is insecure. Therefore, connect the
LCD driver power supply only after resetting the logic condition of this LSI inside to the DISPOFF function. After that, the
DISPOFFcancel the function after the LCD driver power supply has become stable. Furthermore, when disconnecting the
power, set the LCD driver output pins to level V
5
on the DISPOFF function. After that, disconnect the logic system power after
disconnecting the LCD driver power.
When connecting the power supply, follow the recommended sequence shown.
V
DD
V
DD
V
SS
DISPOFF
V
0
V
DD
V
SS
V
SS
V
0
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