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| HD6473837H Datasheet, PDF (347/562 Pages) Renesas Technology Corp – Hardware Manual | |||
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13.3.5 Boosting the LCD Driver Power Supply
When a large LCD panel is driven, or if segments are expanded externally, the built-in power
supply capacity may be insufficient, making it necessary to lower the power supply impedance.
One method, shown in figure 13.12, is to connect a bypass capacitor of around 0.1 µF to 0.3 µF to
pins V1, V2, and V3. Another approach, shown in figure 13.14 below, is to connect a resistive
voltage divider externally.
VCC
H8/3834
VSS
R
V1
R R = several kâ¦
V2
R
V3
C = 0.1 µF to 0.3 µF
R
Figure 13.14 Connecting an External Resistive Voltage Divider
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