HD66712 Datasheet, PDF (55/88 Pages) Hitachi Semiconductor – Dot-Matrix Liquid Crystal Display Controller/Driver

HD66712U
Table 13 Duty Factor and Power Supply for Liquid Crystal Display Drive
Item
Data
Number of Lines
1
2, 4
Duty factor
1/17
1/33
Bias
1/5
1/6.7
Divided resistance
R
R
R
R0
R
2.7R
Note: R changes depending on the size of liquid crystal panel. Normally, R must be 4.7 kΩ to 20 kΩ.
418