S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 480

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

S1D15710 Series
(4) Power *17
Notes: Reference items
11–42
*17: This IC is a V
*18: 7. Command Description Item (20) “Power Saving”
*19: When external power supplies for driving LCD are used, turn all external power supplies off before
*20: The threshold voltage of the LCD panel is about 1 [V].
power system. Shutting of power with voltage remaining in the V
uncontrolling voltage to be output from the SEG and COM pins. Follow the Power OFF sequence.
entering reset state.
6. Function Description Item “Reset Circuit”
When the internal power supply circuit is used, discharge time
voltage between V
V
Set up
1
– V
t
5
L
and V
so that the relationship,
DD
100
DD
80
60
40
20
0
– V
. Figure 5 shows the reference values.
0
DD
SS
and V
Set the time interval after the point when reset
state has attained and the point when V
power is shut off (
through V
voltage displayed on the LCD panel. *20
power system circuit controlling the LCD driving circuit for the V
Function setting by command input (set by user)
(20) Power Save *18
5
0.2
being reduced to 1 volt depends on capacitor C2 to be connected between
Reset state (RES pin=LOW) *19
5
, attain values lower than the threshold
t
L
V
>
DD
Any desired state
t
t
H
L
– V
Figure 20
) so that electric potentials, V1
, is maintained. A state of
Capacity C2 [ F]
EPSON
0.4
SS
power OFF
0.6
DD
– V
t
SS
H
0.8
from the start of resetting to the
DD
t
L
– V
<
t
H
5
power system may cause
may cause faulty display.
1
DD
Rev. 1.1a
– V
5