hd66731a01tb0l Renesas Electronics Corporation., hd66731a01tb0l Datasheet - Page 112
hd66731a01tb0l
Manufacturer Part Number
hd66731a01tb0l
Description
Dot-matrix Liquid Crystal Display Controller/driver Supporting Japanese Kanji, Korean Font Display - Hitachi Semiconductor
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD66731A01TB0L.pdf
(131 pages)
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1/27 Duty Cycle (DT1/0 = 01: 2-Line Drive)
Table 25
Number of Display Lines:
Number of display characters
(NC1/0 set value)
1-line selection period (dot)
Number of dots per screen (dot)
Oscillation frequency (kHz)*
Number of Display Lines:
Number of display characters
(NC1/0 set value)
1-line selection period (dot)
Number of dots per screen (dot)
Oscillation frequency (kHz)*
Note:
(NL1/0 Set Value):
(NL1/0 Set Value):
COM1
*
The frequencies in Table 24 are examples when the frame frequency is set to 70 Hz. Adjust the
oscillation frequency so that an optimum frame frequency can be obtained.
V
V1
V4
V5
1/27 Duty Drive
CC
1-line selection period
1
2
Figure 43 Frame Frequency (1/27 Duty Cycle)
(Number of dots per screen)
3
1 frame
6 characters
(00)
72 dots
1944 dots
135
6 characters
(00)
72 dots
1944 dots
135
4
26
27
10 characters
(01)
120 dots
3240 dots
225
10 characters
(01)
120 dots
3240 dots
225
1
2-Line Display
4-Line Display
2
(11)
(01)
(Number of dots per screen)
3
1 frame
HD66730/HD66731
20 characters
(11)
240 dots
6480 dots
475
26
27
111
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