Samsung 8-Bit CMOS Microcontroller Microcassette Recorder User Manual


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LCD CONTROLLER/DRIVER S3C9228/P9228
13-8
1 Frame
V
DD
V
SS
0 1 2
3
0 1 2
3
COM1
V
SS
V
DD
V
LC1
(V
LC2
)
V
LC3
(V
LC4
)
COM2
V
SS
V
DD
V
LC1
(V
LC2
)
V
LC3
(V
LC4
)
COM3
V
SS
V
DD
V
LC1
(V
LC2
)
V
LC3
(V
LC4
)
SEG0
V
SS
V
DD
V
LC1
(V
LC2
)
V
LC3
(V
LC4
)
SEG1
V
SS
V
DD
V
LC1
(V
LC2
)
V
LC3
(V
LC4
)
COM0-SEG0
+ V
LCD
COM0
V
SS
V
DD
V
LC1
(V
LC2
)
V
LC3
(V
LC4
)
+ 1/3 V
LCD
0V
- 1/3 V
LCD
- V
LCD
COM0
COM1
COM2
COM3
SEG1
SEG0
Figure 13-8. LCD Signal Waveforms (1/4 Duty, 1/3 Bias)
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