em65570sagh ELAN Microelectronics Corp, em65570sagh Datasheet - Page 38

• Manufacturer Part Number: em65570sagh
• Description: 68com/98seg 65k Color Stn Lcd Drivers
• Manufacturer: ELAN Microelectronics Corp

EM65570S
68COM/98SEG 65K Color STN LCD Drivers
32 x
The RAM writing mode of graphic function is fixed to column address increasing and
row address increasing, that is RDWS[2:0]=000 of RAM writing mode. It is
unconcerned with the RAM writing mode user selected.
(1) Draw Rectangle
Give the starting point (X1, Y1) and the ending point (X2, Y2), then set line color and fill
color, graphic engine will draw rectangle with the specified line color and fill color. If
‘FILL’ control bit is disabled, the enclosed area will not be filled. Remarks: X1<= X2;
Y1<= Y2; X2 <= 97; Y2 <= 67
It should be noted that the generated clock numbers for graphic engine must be based
on the rectangle size, the pixel numbers are also enclosed by a rectangle area, the
formula is shown below:
Draw rectangle & fill enable
GCK clock numbers = (End X – Start X + 1) * (End Y – Start Y + 1) + dummy clock
Draw rectangle & fill disable
GCK clock numbers = [(End X – Start X + 1) + (End Y – Start Y + 1)] * 2 + dummy clock
The required dummy clock numbers for graphic function is shown below:
1: Time of ‘H’ or ‘L’ level of GCK must be larger than 200 ns.
2: The sequence of generating clock code must be setting GCK to ‘0’ first, then
setting to ‘1’. That is, GCK=0
( $ ,
numbers ……equation (2)
numbers ……equation (1)
O T
FILL & RECT
Function
COPY
RECT
O T
CLR
DIM
(This specification is subject to change without further notice)
Æ
GCK=1
NOTE
Dummy Clock Numbers
Æ
Product Specification (V1.0) 04.18.2006
GCK=0
7
1
1
1
2
Æ
GCK=1 ……