S1D13700F01A100 Epson, S1D13700F01A100 Datasheet - Page 73

• Manufacturer Part Number: S1D13700F01A100
• Description: Display Drivers LCD CONTROLLER
• Manufacturer: Epson

Specifications of S1D13700F01A100

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Package Type: TQFP
• Pin Count: 80
• Mounting: Surface Mount
• Operating Supply Voltage (min): 2.7V
• Lead Free Status / Rohs Status: Supplier Unconfirmed

12: SWIVELVIEW MODE
12 S
12.1 Default SwivelView Mode
1-64
physical
memory
address
Figure 12-1 Relationship Between The Screen Image and the Image Refreshed by S1D13705 in Default Mode
start
Many of todays applications use the LCD panel in a portrait orientation. In this case it becomes
necessary to “rotate” the displayed image by 90˚. This rotation can be done by software at the
expense of performance or, it can be done by the S1D13705 hardware with no CPU penalty.
There are two SwivelView modes: Default SwivelView Mode and Alternate SwivelView Mode.
Default SwivelView Mode requires the portrait image width be a power of two, e.g. a 240-line panel
requires a minimum virtual image width of 256. This mode should be used whenever the required
virtual image can be contained within the integrated display buffer (i.e. virtual image size 80K
bytes), as it consumes less power than the Alternate SwivelView Mode.
For example, the panel size is 320x240 and the display mode is 8 bit-per-pixel. The virtual image
size is 320x256 which can be contained within the 80K Byte display buffer.
Default SwivelView Mode also requires Memory Clock (MCLK) Pixel Clock (PCLK).
The following figure shows how the programmer sees a 240x320 image and how the image is
displayed. The application image is written to the S1D13705 in the following sense:
A–B–C–D. The display is refreshed by the S1D13705 in the following sense: B-D-A-C.
WIVEL
image seen by programmer
= image in display buffer
C
A
SwivelView
window
V
240
IEW
256
D
B
M
E
ODE
EPSON
display
address
start
image refreshed by S1D13705
S1D13705F00A HARDWARE FUNCTIONAL
320
SPECIFICATION (X27A-A-001-06)