S1D12200 Epson Electronics America, Inc., S1D12200 Datasheet - Page 207
S1D12200
Manufacturer Part Number
S1D12200
Description
S1d12000 Series Lcd Driver Ic Technical Manual Technical Manual
Manufacturer
Epson Electronics America, Inc.
Datasheet
1.S1D12200.pdf
(260 pages)
- Current page: 207 of 260
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Liquid crystal voltage generating circuit
The V
resistor of the IC or external resistors Ra and Rb,
generating potentials V
liquid crystal drive. Furthermore, potentials V
and V
and supplied to the liquid crystal drive circuit.
1 Using all of the boosting circuit, power regulating circuit, and voltage follower
Rev. 2.1
Reference set values: C
C
C
C
C
C
C
C
C
C
C
[When using a V
2
2
2
2
2
2
2
2
2
2
4
5
are impedance-converted by the voltage follower
(Example of V
(Example of V
potential is resistance-divided by the built-in
C
C
1
1
C
C
C
1
1
1
5
voltage regulating built-in resistor]
SS2
SS2
C
1
, V
1
2
= V
= V
: 0.47 to 4.7 F It is recommended to set optimum values suitable for the panel size in
: 0.1 to 4.7 F capacitors C
V
V
CAP1+
CAP1–
CAP2+
CAP2–
V
V
V
V
V
V
V
V
V
V
V
V
CAP1+
CAP1–
CAP2+
CAP2–
V
V
V
V
V
V
V
V
V
V
SS
SS2
OUT
5
R
DD
1
2
3
4
5
S1
SS
SS2
OUT
5
R
DD
1
2
3
4
5
S1
2
SS
SS
, V
S1D124
S1D124
, V
, V
, triple boosting)
, double boosting)
3
0
0
, and V
**
**
4
D
D
required for
****
****
waveforms.
1
, V
2
, V
3
EPSON
,
1
and C
Regarding the liquid crystal drive voltage, the 1/5 bias or
1/4 bias can be selected by command. For liquid crystal
power pins, capacitors C2 for voltage stabilization must
be connected to pins V
A reference circuit example of each case is shown below.
2
C
C
C
C
C
C
C
C
C
C
[When using no V
while watching the liquid crystal display and drive
2
2
2
2
2
2
2
2
2
2
(Example of V
(Example of V
R
R
C
C
2
2
1
1
C
C
C
R
R
R
R
1
1
1
3
1
3
1
5
voltage regulating built-in resistor]
SS2
SS2
1
to V
= V
= V
V
V
CAP1+
CAP1–
CAP2+
CAP2–
V
V
V
V
V
V
V
V
V
V
V
V
CAP1+
CAP1–
CAP2+
CAP2–
V
V
V
V
V
V
V
V
V
V
SS
SS2
OUT
5
R
DD
1
2
3
4
5
S1
SS
SS2
OUT
5
R
DD
1
2
3
4
5
S1
5
SS
SS
S1D124
S1D124
, V
, V
externally.
, double boosting)
, triple boosting)
0
0
S1D12400 Series
**
**
D
D
****
****
6–19
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