S1D13305D00A EPSON [Epson Company], S1D13305D00A Datasheet - Page 54

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

DISPLAY CONTROL FUNCTIONS
9.4. Memory to Display Relationship
The S1D13305 series supports virtual screens that are
larger than the physical size of the LCD panel address
range, C/R. A layer of the S1D13305 series can be
considered as a window in the larger virtual screen held
in display memory. This window can be divided into two
48
SAD3
SAD2
SAD1
SAD1
SAD2
Layer 2
Layer 2
Layer 1
W/S = 0
Layer 1
Layer 1
SAD3
Display page 1
Display page 2
Display page 1
Display page 3
Display page 2
Display page 1
Display page 2
Display page 3
Layer 2
Layer 3
Figure 37. Display layers and memory
SAD3
SAD1
SAD3
SAD3
SAD2
SAD4
Character page 1
Character page 3
SAD1
Character page 3
Graphics page 3
SAD2
EPSON
C/R
SAD2
C/R
C/R
Character page 1
Graphics page 2
Graphics page 2
SAD1
Graphics page 2
C/R
C/R
blocks, with each block able to display a different portion
of the virtual screen.
This enables, for example, one block to dynamically
scroll through a data area while the other acts as a status
message display area. See Figure 37 and 38.
C/R
Graphics page 1
Graphics page 2
AP
CG RAM
C/R
C/R
SAD1
SAD3
SAD2
SAD4
Display page 1
Display page 3
Display page 2
Display page 4
W/S = 1
Layer 1
Layer 2
S1D13305 Series
Technical Manual