HD66730 Datasheet, PDF (113/131 Pages) Hitachi Semiconductor – Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display

HD66730/HD66731
1/40 Duty Cycle (DT1/0 = 10: 3-Line Drive)
1-line selection period
V_CC
V1
COM1
V4
V5
1 234
39 40 1 2 3
39 40
1 frame
(Number of dots per screen)
1 frame
(Number of dots per screen)
Figure 44 Frame Frequency (1/40 Duty Cycle)
Table 26 1/40 Duty Drive
Number of Display Lines:
4-Line Display
(NL1/0 set value):
(11)
Number of display characters
6 characters
10 characters
(NC1/0 set value)
(00)
(01)
1-line selection period (dot)
72 dots
120 dots
Number of dots per screen (dot)
2880 dots
4800 dots
Oscillation frequency (kHz)*
200
335
Note: * The frequencies in Table 25 are examples when the frame frequency is set to 70 Hz. Adjust the
oscillation frequency so that an optimum frame frequency can be obtained.
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