HD66730 Datasheet, PDF (114/131 Pages) Hitachi Semiconductor – Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display

HD66730/HD66731
1/53 Duty Cycle (DT1/0 = 11: 4-Line Drive)
1-line selection period
V_CC
V1
COM1
V4
V5
1 234
52 53 1
1 frame
(Number of dots per screen)
23
52 53
1 frame
(Number of dots per screen)
Figure 45 Frame Frequency (1/53 Duty Cycle)
Table 27 1/53 Duty Drive
Number of Display Lines:
4-line Display (11)
(NL1/0 Setting Value):
(00)
(01)
Number of display characters
6 characters
10 characters
(NC1/0 setting value)
(00)
(01)
1-line selection period (dot)
72 dots
120 dots
Number of dots per screen (dot)
3816 dots
6360 dots
Oscillation frequency (kHz)*
265
445
Note: * The frequencies in Table 26 are examples when the frame frequency is to 80 Hz. Adjust the
oscillation frequency so that an optimum frame frequency can be obtained.
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