HD66730 Datasheet, PDF (111/131 Pages) Hitachi Semiconductor – Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display

HD66730/HD66731
Table 24 1/14 Duty Drive
Number of Display Lines:
(NL1/0 Set Value):
Number of display characters
(NC1/0 set value)
1-line selection period (dot)
Number of dots per screen (dot)
Oscillation frequency (kHz)*
6 characters
(00)
72 dots
1008 dots
70
1-Line Display
(00)
20 characters
(01)
240 dots
3360 dots
235
40 characters
(11)
480 dots
6720 dots
475
Number of Display Lines:
(NL1/0 Set Value):
Number of display characters
(NC1/0 set value)
1-line selection period (dot)
Number of dots per screen (dot)
Oscillation frequency (kHz)*
6 characters
(00)
72 dots
1008 dots
70
2-line Display
(01)
20 characters
(01)
120 dots
1680 dots
120
40 characters
(11)
240 dots
3360 dots
235
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)
1008 dots
1680 dots
Oscillation frequency (kHz)*
70
120
Note: * The frequencies in Table 23 are examples when the frame frequency is set to 70 Hz. Adjust the
oscillation frequency so that a optimum frame frequency can be obtained.
110