HD66766R Datasheet, PDF (89/97 Pages) Hitachi Semiconductor – 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors

HD66766R
Rev. 1.0-1 / September 2002
(2) Step-up circuit 2 – loading characteristic
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 = 0.00R1/12 Bias
Step-up circuit 2: Five times step-up
21.6
21.5
21.4
21.3
21.2
21.1
32 divided frequency
64 divided frequency
96 divided frequency
128 divided frequency
0
10
20
30
40
50
Load voltage [uA]
Figure 72 Step-up circuit 2- load characteristic (AP=01 amplifier constant voltage: small)
21.6
21.5
21.4
21.3
21.2
21.1
0
10
20
30
40
50
32 divided frequency
64 divided frequency
96 divided frequency
128 divided frequency
Load voltage [uA]
Figure 73 Step-up circuit 2- load characteristic (AP=10 amplifier constant voltage: medium)
21.6
21.5
21.4
21.3
21.2
32 divided frequency
64 divided frequency
96 divided frequency
128 divided frequency
21.1
0
10
20
30
40
50
Load voltage [uA]
Figure 74 Step-up circuit 2- load characteristic (AP=11 amplifier constant voltage: large)
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