NT7704 Ver la hoja de datos (PDF) - Novatek Microelectronics

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NT7704

240 Output LCD Segment/Common Driver

Novatek Microelectronics 

NT7704

2. LCD Driver Output Voltage Level

The relationship between the data bus signal, AC converted signal FR and LCD driver output voltage is as shown in the table

below:

2.1. Segment Mode

FR

Latch Data

DISPOFF

Driver Output Voltage Level (Y1 - Y240)

L

L

H

V43

L

H

H

V5

H

L

H

V12

H

H

H

V0

X

X

L

V5

Here, VSS ≤ V5 < V43 < V12 < V0, H: VDD (+2.5 to +5.5V), L: VSS (0V), X: Don't care

2.2. Common Mode

FR

Latch Data

DISPOFF

Driver Output Voltage Level (Y1 - Y240)

L

L

H

V43

L

H

H

V0

H

L

H

V12

H

H

H

V5

X

X

L

V5

Here, VSS ≤ V5 < V43 < V12 < V0, H: VDD (+2.5 to +5.5V), L: VSS (0V), X: Don't care

Note: There are two kinds of power supply (logic level voltage, LCD driver voltage) for the LCD driver. Please supply regular

voltage which is assigned by specification for each power pin.

That time "Don't care" should be fixed to "H" or "L", avoiding floating.

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