HD66766R Datasheet, PDF (90/97 Pages) Hitachi Semiconductor – 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors

HD66766R
(3) Polarity inversion circuit – loading characteristic
Rev. 1.0-1 / September 2002
Measureing condition
Ta = 25C, VCC = 3.0 [V], Oscillation frequency = 250 [kHz]
Vci1 step-up magnification = 0.92, Step-up circuit 1 step-up magnification two times
32 divided frequency, VREFM = 1.1 x VREFL, CT = 0.00R 1/12 Vias
Step-up circuit 2: Five times
21.5
21.3
21.1
20.9
20.7
20.5
32 divided frequency
64 divided frequency
96 divided frequency
128 divided frequency
0
10
20
30
40
50
Load voltage [uA]
Figure 75 Polarity inversion circuit – Load characteristic (AP=01 amplifier constant current: small)
21.5
21.3
32 divided frequency
21.1
20.9
20.7
64 divided frequency
96 divided frequency
128 divided frequency
20.5
0
10
20
30
40
50
Load voltage [uA]
Figure 76 Polarity inversion circuit - Load characteristic (AP=10 amplifier constant current: medium)
21.5
21.3
21.1
20.9
20.7
32 divided frequency
64 divided frequency
96 divided frequency
128 divided frequency
20.5
0
10
20
30
40
50
Load voltage [uA]
Figure 77 Polarity inversion circuit - Load characteristic (AP=11 amplifier constant current: large)
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