Epson S1C6S3N2 Technical Manual page 20

CHAPTER 2: POWER SUPPLY AND INITIAL RESET
Fig. 2.1.2
External elements when
LCD system regulated
voltage circuit is not used
I-8
The LCD system regulated voltage circuit use can be prohibited by
setting the mask option. In this case, external elements can be
minimized because the external capacitors for the LCD system
regulated voltage circuit are not necessary. However when the LCD
system regulated voltage circuit is not used, the display quality of
the LCD panel, when the supply voltage fluctuates (drops), is
inferior to when the LCD system regulated voltage circuit is used.
The S1C6S3B2 always uses the the LCD system regulated voltage
circuit, therefore the external capacitors are required.
Figure 2.1.2 shows the external elements when the the LCD sys-
tem regulated voltage circuit is not used.
• S1C6S3A2
4.5 V LCD panel
1/4, 1/3, 1/2 duty, 1/3 bias
V
DD
C
5
V
S1
C
2
V
L1
V
L2
C
4
V
L3
CA
C
1
CB
V
SS
• S1C6S3N2/S1C6S3A2
3 V LCD panel
1/4, 1/3, 1/2 duty, 1/3 bias
V
DD
C
5
V
S1
C
2
V
L1
C
3
V
L2
V
L3
CA
C
1
CB
V
SS
Note: V
• S1C6S3L2
3 V LCD panel
1/4, 1/3, 1/2 duty, 1/2 bias
V
DD
C
5
V
S1
V
L1
V
L2
C
4
V
L3
CA
C
1
CB
V
SS
3 V
Note: V is shorted to V
L2
3 V LCD panel
1/4, 1/3, 1/2 duty, 1/2 bias
3 V
is shorted to V
L3 SS
1.5 V
Note: V is shorted to V
L1
EPSON
inside the IC.
SS
V
DD
C
5
V
S1
C
2
V
L1
V
L2
V
L3
CA
C
1
CB
V
SS
inside the IC.
inside the IC.
SS
S1C6S3N2 TECHNICAL HARDWARE
3 V