S1D13705 Epson Electronics America, Inc., S1D13705 Datasheet - Page 130

• Manufacturer Part Number: S1D13705
• Description: S1d13705 Embedded Memory Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Page 38
S1D13705
X27A-G-002-02
physical
memory
address
Figure 7-1: Relationship Between the Default Mode Screen Image and the Image Refreshed by S1D13705
start
image seen by programmer
= image in display buffer
C
A
window
From the programmers perspective the memory is laid out as shown on the left. The
programmer accesses memory exactly as for a panel of with the dimensions of 240x320
setup to have a 256 pixel horizontal stride. The programmer sees memory addresses
increasing from A->B and from B->C.
From a hardware perspective the S1D13705 always refreshes the LCD panel in the order
B->D and down to do A->C.
portrait
240
256
D
B
E
display
address
start
image refreshed by S1D13705
320
Epson Research and Development
Programming Notes and Examples
Vancouver Design Center
Issue Date: 01/02/13