Specifications
SED1220
EPSON 4–19
SED1220
CAP1+
CAP1-
V
OUT
V
5
R
3
R
2
R
1
V
DD
, V
0
V
1
V
2
V
3
V
4
V
5
V
S1
V
R
V
SS
SED1220D
**
CAP2-
CAP2+
C2
C2
C2
C2
C2
C2
External
power
source
CAP1+
CAP1-
V
OUT
V
5
V
DD
, V
0
V
1
V
2
V
3
V
4
V
5
V
S1
V
R
V
SS
CAP2+
CAP2-
SED1220D
**
C2
C2
C2
C2
C2
C2
External
power
source
V
SS
Reference setting values: C1: 0.47 - 4.7 µF We suggest you to determine the most appropriate capacitance values,
C2: 0.1 - 4.7 µF fitting to the panel size, for respective capacitors C1 and C2 in consideration
of the liquid crystal display and drive waveforms.
V
1
V
2
V
3
V
4
V
5
External
power
supply
SED1220D
✽✽
V
DD
, V
DD
V
5
V
R
CAP1+
CAP1–
V
OUT
V
SS
When a built-in supply is used
Example 2: When using the built-in power source
(VC, VF, P) = (1, 1, 0)
Example 3: When using the built-in power source
(VC, VF, P) = (0, 1, 0)