ra8806 RAIO Technology Inc., ra8806 Datasheet - Page 101

• Manufacturer Part Number: ra8806
• Description: Two Layers Character/graphic Lcd Controller
• Manufacturer: RAIO Technology Inc.

Preliminary Version 1.2
RAiO
6-14 Extension Mode for Display
TECHNOLOGY INC.
Normally the maximum support resolution of RA8806 is 320x240 dots. But RA8806 support a special
display mode – Extension mode. And the maximum support resolution is 640x240 or 320x480 dots. In
Extension mode, the dual DDRAM data can be show on the bigger panel. This mode is set by the Bit[6:4]
of register MAMR. Please refer to Figure 6-68 of the example by using 640x240 panel, and Figure 6-69
by using 320x480 panel.
If MAMR Bit[6:4] = 110b, then RA8806 supports maximum resolution is 640x240 pixels. The left side of
screen shows the DDRAM1 data, the right side shows the DDRAM2 data. Please refer to Figure 6-68.
If MAMR Bit[6:4] = 111b, then RA8806 supports maximum resolution is 320x480 pixels. The up side of
screen shows the DDRAM1 data, the down side shows the DDRAM2 data. Please refer to Figure 6-69.
Figure 6-68 : Extension Mode(1) Register MAMR Bit[6:4] = 110h
RA8806
RA8806
Figure 6-67 : Maximum Resolution for RA8806
240
DDRAM1
Data
320
LCD Driver
LCD Driver
101/184
DDRAM2
Two Layers Character/Graphic LCD Controller
Com/Seg Signals
Com/Seg Signals
Data
320
Extension Mod
Max. 320x240
Normal Mode
Max. 640x240
Max. 320x480
LCD Panel
LCD Panel
or
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RA8806