S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 97

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

[Control by Set Power Control command]
D2 turns on when triple booster control bit goes HIGH, and D2 turns off when this bit goes LOW.
D1 turns on when voltage regulator control bit goes HIGH, and D1 turns off when this bit goes LOW.
D0 turns on when voltage follower control bit goes HIGH, and D0 turns off when this bit goes LOW.
[Practical combination examples]
To use the on-chip (internal) power supply only, set
(D2,D1,D0)=(1,1,1).
To use the voltage booster circuit only, set (D2,D1,D0)=(1,0,0).
To use the voltage regulator and voltage follower, set
(D2,D1,D0)=(0,1,1).
To use an external power supply only, set (D2,D1,D0)=(0,0,0).
Notes: 1. The voltage booster terminals are CAP1+, CAP1-, CAP2+,
Rev.3.5
D2 D1 D0
1
1
0
0
2. The above listed examples are the most practical use to
3. The V/F circuit alone cannot be used. When this circuit
1
0
1
0
and CAP2-.
control each circuit using control bits. Any other setup is
unpractical and omitted in this manual.
is used, the V adjustment circuit must be set simultaneously.
(V
CC
1
0
1
0
(GND) V
=+5V) V
Potential during double boosting
SS
DD
booster
Voltage
=-5V
OFF
OFF
V
=0V
ON
ON
OUT
=2V
SS
=-10V
regulator
Voltage
OFF
OFF
ON
ON
follower
Voltage
EPSON
OFF
OFF
ON
ON
Voltage tripler
If capacitors C1 are inserted between CAP1+ and CAP1-, between
CAP2+ and CAP2–, and between V
between V
it is output at V
between CAP2+ and CAP2-, open CAP2+, and jumper between
CAP2- and V
(CAP2-).
The booster receives signals from oscillator circuit and, therefore,
the oscillator must be active. The following shows the boosted
potential.
External voltage Voltage booster Voltage regulator
To V
DD
To V
input
V
and V
OUT
V
—
—
1
OUT
SS
DD
OUT
to V
=-5V
. The double boosted voltage appears at V
V
=0V
Potential during triple boosting
. For double boosting, remove only capacitor C1
OUT
SS
5
is boosted to triple toward negative side and
=3V
SS
=-15V
terminal
OPEN
OPEN
Used
Used
SS
S1D15206 Series
and V
OUT
, the potential
terminal
OPEN
OPEN
Used
Used
4–13
OUT