EM65568 ELAN Microelectronics Corp, EM65568 Datasheet - Page 92

• Manufacturer Part Number: EM65568
• Description: 130 Com/ 128 Seg 4096 Color Stn Lcd Driver
• Manufacturer: ELAN Microelectronics Corp

EM65568
130 COM/ 128 SEG 4096 Color STN LCD Driver
9.
Relationship between Setting and Common/Display RAM
The relationship between the COM pin numbers and the addresses in the Y-direction on the display RAM changes according to
the SHIFT command. LCD Duty Set command. Display Starting Common Position Set command, and Display Starting Line
Set command.
When “0” is selected for the display starting line:
The relationship between the COM pin and the addresses in the vertical direction of the display RAM (hereafter called MY)
changes on an 15 dots basis according to the LCD Duty Set command and the Display Starting Common Position Set
command. When the SHIFT bit is “0”, the common position change in the forward direction. When “1” they change reverse
direction. When “0” is selected as the values for LA7 to LA0 in the Display Starting Line Set command, the MY number
corresponding to the display starting position is “0”. The MY numbers are sequentially shifted backward when display occurs.
In any case, the relations of COMA = MY128 and COMB = MY129 do not change.
When non-zero is selected for the display starting line:
The relationship between the COM pins and the addresses in the vertical direction on the display RAM, MY changes on an 15
dots basis according to the information in the LCD Duty Set command and Display Starting Common Position Set command.
The common positions change in the forward when the SHIFT bit is “0”, and change in the reverse direction when the SHIFT
bit is “1”. If non-zero is selected for the values for LA7 to LA0 by the Display Starting Line set command. the MY number
corresponding to the display starting position shifts by the set value. The MY number shifts backward when display occurs. If
it exceeds 128, it returns to 0, and the shifts sequentially. In any case, the relations of COMA = MY129 and COMB = MY129
do not change.
* This specification is subject to be changed without notice.
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2005/3/8 (V1.2)