HD66766R Datasheet, PDF (24/97 Pages) Hitachi Semiconductor – 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors

HD66766R
Table 13 Display bias setting table
VC2 VC1 VC0 Vci1 control range
0 0 0 0.92 x Vcc
0 0 1 0.87 x Vcc
0 1 0 0.83 x Vcc
0 1 1 0.8 x Vcc
1 0 0 0.76 x Vcc
1 0 1 0.73 x Vcc
1 1 0 0.68 x Vcc
1 1 1 Vci1 control amplifier suspends.
(Vci1 can be supplied externally.)
Rev. 1.0-1 / September 2002
Table 14 AP bits and amount of fixed current
AP1 AP0 Amount of fixed current in the operational amplifier
0 0 Operational amplifier and booster do not operate.
0 1 Small
1 0 Middle
1 1 Large
Table 15 Output voltage ratio of the booster 1 and 2
VOUT output of the booster 1
BT2 BT1
BT0
(Use VOUT within the range of 4.0 to 5.75V.)
00
0
2 x Vci1
00
1
3 x Vci1
0
1
0
2 x Vci1
0
1
1
3 x Vci1
1
0
0
2 x Vci1
1
0
1
3 x Vci1
1
1
0
2 x Vci1
1
1
1
3 x Vci1
Set the factor of the booster 2 according to voltage of Vci2 and VCH.
When the factor is set low, current consumption can be lowered.
VCH output of the booster 2
(Set VCH lower than 22.0V.)
2 x Vci2
2 x Vci2
3 x Vci2
3 x Vci2
4 x Vci2
4 x Vci2
5 x Vci2
5 x Vci2
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