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KING BILLION ELECTRONICS CO., LTD
駿
億
電
子
股
份
有
限
公
司
HE84760B
HE80004 Series
June 29, 2005
This specification is subject to change without notice. Please contact sales person for the latest version before use.
21
V1.0
LVL1
LVL2
LVL3
LVL4
LVL5
LCAP4A
LCAP2A
LCAP2A
LCAP1A
LCAP1A
LCAP3A
LCAP3A
LVAG
LVAG
LCAP2B
LCAP4A
LVL1
LVL2
LVL4
LCAP2B
LVL3
LV5
LVL5
LCAP1A
LCAP3A
LCAP2B
LCAP4A
LCAP2A
LVL1
LVL3
LVL2
LVL4
LCAP1B
LCAP1B
LCAP1B
LVAG
LGS1
LVREG
LGS1
LVREG
LVREG
LGS1
0.1uF
4.7uF
4.7uF
4.7uF
0.1uF
4.7uF
4.7uF
4.7uF
4.7uF
0.1uF
4.7uF
0.1uF
4.7uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
R2
R1
R2
0.1uF
R1
R1
R2
0.1uF
x4 multiplier
x3 multiplier
GND_LCD
GND_LCD
GND_LCD
x5 multiplier
Different duties require different bias settings. There is some theoretical correspondence between the
Duty and Bias Setting. However, it is better to use it as starting point and adjust it with real LCD panel
connected to it to determine the final setting. The theoretic relationship between the duty and bias setting
as following:
Duty Cycle Normal Bias Alternative Bias
32 duty
1/7
48 duty
1/8
64 duty
1/9
80 duty
1/10
1/7.5
1/7.5, 1/8.5
1/8.5, 1/9.5
1/9.5, 1/10.5
The bias setting is made by mask option MO_LBSR[2..0].
MO_LBSR[2..0]
000
001
010
011
100
101
110
111
Bias Setting
1/7
1/7.5
1/8
1/8.5
1/9
1/9.5
1/10
1/5