HD66740 Datasheet, PDF (65/95 Pages) Hitachi Semiconductor – 112 x 80-dot Graphics LCD Controller/Driver

ii) Four-dot partial scroll up
- PS1-0 = "10" : Fixed-displays the first and second lines
- CN1-0 = "10" : Moves the first line to the bottom edge
- SN3-0 = "0010" : Starts display from the third line
- SL2-0 = "100" : Shifts up by 4 dots
Fixed display
(2nd line)
HD66740
Display start
setting position
Fixed display
(1st line)
Figure 34 Example of Display Screen in the Partial Smooth Scroll Mode (1)
iii) 8-dot partial scroll up
- PS1-0 = "10" : Fixed-displays the first and second lines
- CN1-0 = "10" : Moves the first line to the bottom edge
- SN3-0 = "0011" : Starts display from the fourth line
- SL2-0 = "000"
Fixed display
(2nd line)
Display start
setting position
Fixed display
(1st line)
Figure 35 Example of Display Screen in the Partial Smooth Scroll Mode (2)
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