S1D13706F00A200 Epson, S1D13706F00A200 Datasheet - Page 135

• Manufacturer Part Number: S1D13706F00A200
• Description: LCD Drivers (QVGA) 320x240 LCD Controller @ 8bpp
• Manufacturer: Epson

Specifications of S1D13706F00A200

• Maximum Clock Frequency: 33 MHz
• Operating Supply Voltage: 1.8 V to 2.2 V, 3 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Package / Case: TQFP-100
• Attached Touch Screen: No
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Epson Research and Development
Vancouver Design Center
12 SwivelView™
12.1 Concept
12.2 90° SwivelView™
Hardware Functional Specification
Issue Date: 2008/12/16
physical memory
start address
Figure 12-1: Relationship Between The Screen Image and the Image Refreshed in 90° SwivelView.
image seen by programmer
= image in display buffer
C
A
SwivelView
window
Most computer displays are refreshed in landscape orientation – from left to right and top
to bottom. Computer images are stored in the same manner. SwivelView™ is designed to
rotate the displayed image on an LCD by 90°, 180°, or 270° in an counter-clockwise
direction. The rotation is done in hardware and is transparent to the user for all display
buffer reads and writes. By processing the rotation in hardware, SwivelView™ offers a
performance advantage over software rotation of the displayed image.
The image is not actually rotated in the display buffer since there is no address translation
during CPU read/write. The image is rotated during display refresh.
90° SwivelView™ requires the Memory Clock (MCLK) to be at least 1.25 times the
frequency of the Pixel Clock (PCLK), i.e. MCLK ≥ 1.25PCLK.
The following figure shows how the programmer sees a 320x480 portrait image and how
the image is being displayed. The application image is written to the S1D13706 in the
following sense: A–B–C–D. The display is refreshed by the S1D13706 in the following
sense: B-D-A-C.
320
D
B
display start address
(panel origin)
Revision 10.3
image refreshed by S1D13706
480
X31B-A-001-10
S1D13706
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