S1D13700F02 Epson Electronics America, Inc., S1D13700F02 Datasheet - Page 118

• Manufacturer Part Number: S1D13700F02
• Description: Embedded Memory Graphics Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Page 118
15.4.2 Half-Tone Display
Menu Pad Display
Graph Display
S1D13700F02
X42D-A-001-01
SAD1
AB
1st layer
The FP parameter (display attributes) can be used to generate a half-intensity display by
flashing the display at 17Hz. Note that this mode may cause flicker problems with certain
LCD panels.
Turn flashing off for the first layer, on at 17 Hz for the second layer, and combine the
screens using the OR function.
To display two overlaid graphs on the screen, configure the display in the same manner as
for menu pad display and put one graph on each screen layer. The difference in contrast
between the half and full intensity displays make it easy to distinguish between the two
graphs and create an attractive display.
1. REG[18h] Overlay Register = 00h
2. REG[0Ah] Display Attribute Register = 34h
1. REG[18h] Overlay Register = 00h
2. REG[0Ah] Display Attribute Register = 34h
Figure 15-7 Half-Tone Character And Graphics
+
SAD2
Revision 1.01
2nd layer
AB
Epson Research and Development
Combined layer display
Hardware Functional Specification
Half-tone
Vancouver Design Center
Issue Date: 2005/11/29