EM65570
68COM/ 98SEG 65K Color STN LCD Driver
7.23.1 Settings Scrolling Data Area in RAM
Set the scroll top address and scroll bottom address to define an area of scrolling data
in RAM
Example:
98RGB X 68 Line display RAM
RAM address
2004/11/18
AM 8:00
Top fixed area
Scrol l data area
2
Scroll top address
65
Scroll bottom address
Bottom f i xed area
Menu
Phonebook
Figure 7-22a An Example of Setting Scrolling Data Area in RAM
Next, set the scroll specified address according to the panel size and duty selection to
specify the address to which to jump relative to the scroll bottom address. Then display
the fixed bottom data area.
Note that the scroll specified address = scroll top address + panel scroll area – 1.
Example (160 x 128 Line panel; 1/32 duty, partial display):
98RGB X 68 Line display RAM
1/32 duty partial display
RAM address
COM 0
COM 2
2
Scroll top address
Scroll specifiedaddress
COM 29
COM 31
29
jump to bottom
address
65
Scroll bottomaddress
Scroll specifiedaddress
(setting specified address=29)
COM 0
COM 2
2
COM 29
COM 31
31
jump to bottom
address
65
(setting specified address=31)
Figure 7-22b An Example of Scroll Bottom Address Settings in an Scrolling Area
50 •
Product Specification (V1.0) 09.05.2005
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
