STE2007 Datasheet, PDF (51/62 Pages) STMicroelectronics – 96 x 68 Single Chip LCD Controller/Driver

STE2007
8 Commands
8.17 Bias Ratio
It is possible to select different Bias Ratio.
Table 40. Bias Ratio
(D/C)
D7 D6 D5 D4 D3 D2 D1 D0
0
0
0
1
1
0 BR2 BR1 BR0
Function
Command Identifier + Data Field
Table 41. BIAS Ratio
BR2
BR1
BR0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Function
Bias Ratio =1/10 - 81 Lines
Bias Ratio = 1/9 - 65 Lines
Bias Ratio =1/8 - 49 Lines
Bias Ratio = 1/7 - 33 Lines
Bias Ratio =1/6 - 25 Lines
Bias Ratio = 1/5 - 17 Lines
Bias Ratio =1/4 - 9 Lines
Not Used
Table 42. Bias levels Generator
BR=000
V_LCD
R
R
6R
R
R
V_SS
BR=001
V_LCD
R
9
10 ^·VLCD
R
8
10 ^·VLCD
5R
2
10 ^·VLCD
R
1
10 ^·VLCD
R
V_SS
BR=100
V_LCD
R
R
2R
R
R
V_SS
BR=101
V_LCD
R
5
6 ^·VLCD
R
4
6 ^·VLCD
1R
2
6 ^·VLCD
R
1
6 ^·VLCD
R
V_SS
BR=010
V_LCD
R
8
9 ^·VLCD
R
7
9 ^·VLCD
4R
2
9 ^·VLCD
R
1
9 ^·VLCD
R
V_SS
BR=110
V_LCD
R
4
5 ^·VLCD
R
3
5 ^·VLCD
4R
2
5 ^·VLCD
R
1
5 ^·VLCD
R
V_SS
BR=011
7
8 ^·VLCD
6
8 ^·VLCD
2
8 ^·VLCD
1
8 ^·VLCD
V_LCD
R
R
3R
R
R
V_SS
3
4 ^·VLCD
2
4 ^·VLCD
2
4 ^·VLCD
1
4 ^·VLCD
6
7 ^·VLCD
5
7 ^·VLCD
2
7 ^·VLCD
1
7 ^·VLCD
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