HD66717 Datasheet, PDF (58/90 Pages) Hitachi Semiconductor – (Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver)

HD66717
HD66717
V_CC
V_CC
R
V2 ^R
R
+
– V1
+
–
V2
V3 ^R
R
R
VR
V_EE
+
–
V3
+
–
V4
+
–
V5
CT
Figure 35 Contrast Adjuster
Table 20 Contrast-Adjust Bits (CT) and Variable Resistor Values
CT Register
CT3
CT2
CT1
CT0
Variable Resistor Value (VR)
0
0
0
0
6.4 R
0
0
0
1
6.0 R
0
0
1
0
5.6 R
0
0
1
1
5.2 R
0
1
0
0
4.8 R
0
1
0
1
4.4 R
0
1
1
0
4.0 R
0
1
1
1
3.6 R
1
0
0
0
3.2 R
1
0
0
1
2.8 R
1
0
1
0
2.4 R
1
0
1
1
2.0 R
1
1
0
0
1.6 R
1
1
0
1
1.2 R
1
1
1
0
0.8 R
1
1
1
1
0.4 R
510