hd66717 Renesas Electronics Corporation., hd66717 Datasheet - Page 29
hd66717
Manufacturer Part Number
hd66717
Description
Low-power Dot-matrix Liquid Crystal Display Controller/driver -
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD66717.pdf
(90 pages)
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Display On/Off Control
The display on/off control instruction (Figure 11) includes DC, DS, and LC bits.
DC: The character display is on when DC is 1 and off when DC is 0. When off, the display data remains
in DDRAM, and can be displayed instantly by setting DC to 1.
DS: When DS = 1, segment display for icons and marks that is controlled by the multiplexing drive
method is turned on and when DS = 0, it is turned off.
When both DC and DS = 0, multiplexing drive is halted, setting the outputs from SEG1 to SEG60, COM1
to COM32, and COMS1 and COMS2 to V
LCD charging or discharging due to LCD driving operations.
LC: When LC = 1, a cursor attribute is assigned to the line that contains the address counter (AC) value.
Cursor mode can be selected with the B/W, C, and B bits. Refer to the Line-Cursor Display section.
ii) 8th raster-row
Figure 11 Display On/Off Instruction
Figure 10 Cursor Control Examples
cursor display
i) White-black inverting display example
RS R/W DB7
0
0
CC
0
Alternating display
(every 32 frames)
level to turn off the display. This can suppress current for
0
0
1
Alternating
display
ii) Blink display example
0
DC DS
DB0
LC
HD66717
481
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