S1D13305D00A EPSON [Epson Company], S1D13305D00A Datasheet - Page 43

• Manufacturer Part Number: S1D13305D00A
• Description: LCD Controller ICs
• Manufacturer: EPSON [Epson Company]

8.3.7. HDOT SCR
While the SCROLL command only allows scrolling by
characters, HDOT SCR allows the screen to be scrolled
horizontally by pixels. HDOT SCR cannot be used on
individual layers.
8.3.7.1. D0 to D2
Specifies the number of pixels to scroll. The C/R param-
eter has to be set to one more than the number of
horizontal characters before using HDOT SCR. Smooth
scrolling can be simulated if the controlling microproces-
sor repeatedly issues the HDOT SCR command to the
S1D13305 series. See Section 9.5 for more information
on scrolling the display.
8.4. Drawing Control Commands
8.4.1. CSRW
The 16-bit cursor address register contains the display
memory address of the data at the cursor position as
shown in Figure 22.
Note that the microprocessor cannot directly access the
display memory.
S1D13305 Series
Technical Manual
P1
C
MSB
Figure 20. HDOT SCR parameters
0
0
1
0
0
0
1
0
1
0
P1
P2
C
D2
MSB
0
A15 A14 A13 A12 A11 A10
A7
0
D1
1
Figure 22. CSRW parameters
A6
1
D0
0
LSB
A5
0
A4
EPSON
0
A3
0
Table 18. Scroll step selection (continued)
The MREAD and MWRITE commands use the address
in this register.
A2
1
HEX
00
01
02
06
07
Z
M/N is the number of bits (dots) that parameter 1 (P1)
is incremented/decremented by.
A1
A9
M
1
Z
A
Figure 21. Horizontal scrolling
A
A0 (CSRL)
A8 (CSRH)
0
LSB
P1
A
B
D2 D1 D0
0
0
0
1
1
B
B
Display width
0
0
1
1
1
0
1
0
0
1
INSTRUCTION SET
Number of pixels
X
X
to scroll
X
Y
N
Y
0
1
2
6
7
Y
M = 0
N = 0
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