LC79451KB Datasheet, PDF (15/38 Pages) ON Semiconductor – Controller and Driver

6-2. Waveform Generation Function
LC79451KB
This device is equipped with a function to generate four kinds of the normal drive waveform, and one kind of the
refresh waveform.
Each waveform can set the output level and the output time.
6-2-1. Normal Drive Waveform
The normal drive waveform is divided into 12 sections and can set the output level and the output time of each section
by the registers.
The output level of one section selects among 3 levels of +15V, 0V, -15V.
The output time of one section selects from the range of 1ms to 256ms.
Non-drive state
1st
section
S(0)
2nd
section
S(1)
3rd
section
S(2)
10th
section
S(9)
11th
section
S(10)
12th
section
S(11)
Non-drive state
+15V
0V
-15V
(White)
(Black)
Transition of the following image state can set the normal drive waveform each.
White image ⇒ White image
White image ⇒ Black image
Black image ⇒ White image
Black image ⇒ Black image
Output driver outputs one waveform by setting START Flag.
White and black can turn over by setting DB Flag.
6-2-2. Refresh Drive Waveform
The image is changed to full screen white or full screen black by the refresh drive waveform.
The refresh drive waveform is divided into 4 sections and can set the output level and the output time of each section
by the registers.
The output level of one section selects among 3 levels of +15V, 0V, -15V.
The output time of one section selects from the range of 8ms to 2048ms.
Non-drive state
1st
section
SR(0)
2nd
section
SR(1)
3rd
section
SR(2)
4th
section
SR(3)
Non-drive state
+15V
0V
-15V
(Black)
(White)
Output driver outputs one waveform by setting START Flag.
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