S1D15605D11B Epson Company, S1D15605D11B Datasheet - Page 48
S1D15605D11B
Manufacturer Part Number
S1D15605D11B
Description
Single-chip dot matrix liquid crystal display drivers
Manufacturer
Epson Company
Datasheet
1.S1D15605D11B.pdf
(87 pages)
- Current page: 48 of 87
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S1D15605 Series
5 When the built-in power circuit is used to drive a
* 1 Because the V
* 2 C1 and C2 are determined by the size of the LCD being driven. Select a value that will stabilize the liquid crystal
Example of the Process by which to Determine the Settings:
• Turn the voltage regulator circuit and voltage follower circuit ON and supply a voltage to V
• Determine C2 by displaying an LCD pattern with a heavy load (such as horizontal stripes) and selecting a C2 that
• Next turn all the power supplies ON and determine C1.
8–46
stabilizes the liquid crystal drive voltages (V
value.
liquid crystal panel heavily loaded with AC or DC, it
is recommended to connect an external resistor to
stabilize potentials of V
output from the built-in voltage follower.
drive voltage.
C
2
When the V/F circuit alone is used
V
V
V
DD
SS
DD
External
R
supply
power
4
R
4
R
C
C
C
C
C
terminal input impedance is high, use short leads and shielded lines.
2
2
2
2
2
R
4
R
1
, V
4
V
V
CAP3–
CAP1+
CAP1–
CAP2+
CAP2–
V
V
V
V
V
V
V
V
V
V
V
V
V
V
2
SS2
OUT
5
R
DD
1
2
3
4
5
, V
DD
1
2
3
4
5
IRS
, V
3
and V
0
M/S
4
which are
It is recommended to set an optimum
resistance value R
display and the drive waveform.
1
to V
Reference set value R
Figure 23
EPSON
5
). Note that all C2 capacitors must have the same capacitance
4
V
taking the liquid crystal
DD
When the built-in power is not used
When V
Examples of shared reference settings
External
supply
power
4
Item
: 100k
C
C
1
2
5
can vary between –8 and 12 V
V
~ 1M
SS
0.01 to 1.0
Set value
1.0 to 4.7
V
V
CAP3–
CAP1+
CAP1–
CAP2+
CAP2–
V
V
V
V
V
V
V
V
SS2
OUT
5
R
DD
1
2
3
4
5
IRS
OUT
M/S
from the outside.
V
Units
DD
F
F
Rev. 2.4a
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