S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 231

• Manufacturer Part Number: S1D1
• Description: LCD Controller-driver With Built-in Character ROM
• Manufacturer: Epson Electronics America, Inc.

S1D15600/601/602 Series
7–36
Liquid Crystal Voltage Generating Circuit
A V
cause V
liquid crystals. The V
further converted in the impedance by the voltage fol-
lower before supplied to the liquid crystal driving circuit.
The liquid crystal driving voltage is fixed with each type.
S1D15600D00B
S1D15600D10B
S1D15601D00B
S1D15601D10B
S1D15602D00B
5
potential is resistively divided within the IC to
types
1
, V
2
(V)
, V
V
Example of V
5
3
and V
–14
–12
–10
*
*
*
*
*
–8
–6
–4
–2
0
–20
Liquid crystal driving voltage
1/9 bias voltage
1/7 bias voltage
1/7 bias voltage
1/5 bias voltage
1/5 bias voltage
4
1
, V
potentials needed for driving of
2
, V
5
Voltage When Using S1D15600/601/602 Series Electronic Volume
–10
3
and V
S1D15600/601/602 Series V
4
potentials are
0
10
EPSON
20
Ta
As shown in Fig. 8, it needs to connect, externally voltage
stabilizing capacitors C2 to the liquid crystal power
terminals. When selecting such capacitor C2 make
actual liquid crystal displays matching to the display
capacity of the liquid crystal display panel, before deter-
mining on the capacitance as the constant value for
voltage stabilization.
30
5
40
V
V
V
5
5
5
50
Min.
typ
Max.
( C)
60
Rev. 4.6