
S1D15G10D08B000
Rev. 1.0
EPSON
37
(18) Read modify write out (RMWOUT) Command: 1 Parameter: 0
Entering this command cancels the read modify write mode.
A0
0
RD
1
WR
0
D7
1
D6
1
D5
1
D4
0
D3
1
D2
1
D1
1
D0
0
Command
(19) Area scroll set (ASCSET) Command: 1 Parameter: 4
It is used when scrolling only the specified portion of the screen (dividing the screen by lines). This command and
succeeding parameters specify the type of area scroll, FIX area and scroll area.
A0
RD
WR
D7
D6
D5
D4
Command
0
1
0
1
0
1
0
Parameter1 (P1)
1
1
0
*
*
P15 P14 P13 P12 P11 P10
Parameter2 (P2)
1
1
0
*
*
P25 P24 P23 P22 P21 P20
Parameter3 (P3)
1
1
0
*
*
P35 P34 P33 P32 P31 P30
Parameter4 (P4)
1
1
0
*
*
*
*
*: Invalid bits irrelevant with the operation.
P4: It is used to specify an area scroll mode.
D3
1
D2
0
D1
1
D0
0
Function
––
Top block address
Bottom block address
Number of specified blocks
Area scroll mode
*
*
P41 P40
P41
0
0
1
1
P40
0
1
0
1
Types of area scroll
Center screen scroll
Top screen scroll
Bottom screen scroll
Whole screen scroll
: Fixed area
: Scroll area
Center screen scroll
Top screen scroll
Bottom screen scroll
Whole screen scroll
Since S1D15G10 processes the liquid crystal display signals on the four-line basis (block basis), FIX and scroll areas
are also specified on the four-line basis (block basis).
DDRAM address corresponding to the top FIX area is set in the block address incrementing direction starting with 0
block. DDRAM address corresponding to the bottom FIX area is set in the block address decreasing direction starting
with 41st block. Other DDRAM blocks excluding the top and bottom FIX areas are assigned to the scroll + background
areas.
P1: It is used to specify the top block address of the scroll + background areas. Specify the 0th block for the top screen
scroll or whole screen scroll.
The scroll start block address is also set at this top block address until the scroll-start block set command specifies
the address.
P2: It specifies the bottom address of the scroll + background areas. Specify the 32th block for the bottom or whole
screen scroll.
Required relation between the start and end blocks (top block address < bottom block address) must be maintained.
P3: It specifies a specific number of blocks {Numbers of (Top FIX area + Scroll area) blocks - 1}. When the bottom
scroll or whole screen scroll, the value is identical with P2.
You can turn on the area scroll function by executing the area scroll set command first and then specifying the display
start block of the scroll area with the scroll start set command.