HD66724 Datasheet, PDF (83/117 Pages) Hitachi Semiconductor – (Graphics LCD Controller/Driver with Key Scan Function)

HD66724/HD66725
Setting Instructions (Character Display Mode: GR = 0, 3-Line Display: NL2-0 =
011)
Scroll up display
R/W RS DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 00 1 00 10 00
0 0010 10 0 00
SN2 – SN0 = 000
SL2 – SL0 = 000
(1st raster-row of 1st line displayed at the top)
Set initial character codes of 5 lines to all DDRAM addresses
*1st to 3rd lines are being displayed
0 0010 10010
CPU Wait
0 0010 10100
CPU Wait
0 0010 10110
CPU Wait
Scroll up 2 raster-rows
(3rd raster-row of 1st line displayed at the top)
Scroll up 4 raster-rows
(5th raster-row of 1st line displayed at the top)
Scroll up 6 raster-rows
(7th raster-row of 1st line displayed at the top)
0 0 0 1 0 0 1 0 0 1 SN2 – SN0 = 001
0 0010 10 0 00
SL2 – SL0 = 000
(1st raster-row of 2nd line displayed at the top)
Update 1st-line (address 00H to 0FH) character codes in DDRAM
*While 1st and 5th lines are not displayed,
2nd to 4th lines are being displayed
0 0010 10010
CPU Wait
0 0010 10100
CPU Wait
0 0010 10110
Scroll up 10 raster-rows
(3rd raster-row of 2nd line displayed at the top)
Scroll up 12 raster-rows
(5th raster-row of 2nd line displayed at the top)
Scroll up 14 raster-rows
(7th raster-row of 2nd line displayed at the top)
CPU Wait
0 0 0 1 0 0 1 0 1 0 SN2 – SN0 = 010
0 0010 10 0 00
SL2 – SL0 = 000
(1st raster-row of 3rd line displayed at the top)
Update 2nd-line (address 10H to 1FH) character codes in DDRAM
*While 1st and 2nd lines are not displayed,
3rd to 5th lines are being displayed
0 0010 10010
CPU Wait
0 0010 10100
CPU Wait
Scroll up 18 raster-rows
(3rd raster-row of 3rd line displayed at the top)
Scroll up 20 raster-rows
(5th raster-row of 3rd line displayed at the top)
Figure46 Setting Instructions for Vertical Smooth Scroll (Character Display Mode)
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