Specifications
EPSON 9–25
SED1278
SED1278
FR
t
FR
t
FR
V
DD
V
SS
V
DD
V
1
V
4
V
5
V
DD
V
1
V
4
V
5
V
DD
V
1
V
4
V
5
V
DD
V
5
, V
3
V
5
COM 1
COM 2
COM 16
SEG 1
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Figure 7 1/16 Duty Cycle Drive Waveforms
LCD Interface Configurations
The SED1278 has 16 common and 40 segment drive
outputs, enabling the chip to drive up to 16 characters by
itself. The drive capability can be expanded to 80
characters, by using SED1181F
LA external segment
drivers.
• 1 line
• 8 characters
•5×7 pixels + cursor
• 1/8 duty cycle
• System set: N = 0, F = 0
SED1278
COM 1
1 No. of
characters
LCD panel
8
COM 7
COM 8
SEG 1
SEG 40
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