RAiO RA8806 - Display Future
RAiO RA8806 - Display Future
RAiO RA8806 - Display Future
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Version 1.3<br />
<strong>RA8806</strong><br />
Two Layers Character/Graphic LCD Controller<br />
6-11 User-Defined Font<br />
The <strong>RA8806</strong> embedded a 512Byte CGRAM for user to create new character. The user could create<br />
font, special symbol or pattern in this memory. If user only uses one DDRAM, then the other one could<br />
also use as CGRAM.<br />
Therefore, the <strong>RA8806</strong> provides 3 regions for user to create new character(symbol or pattern) as<br />
following:<br />
1. 512 Bytes CGRAM<br />
2. 9.6K Bytes DDRAM1 (When user only shows DDRAM2 data on screen)<br />
3. 9.6K Bytes DDRAM2 (When user only shows DDRAM1 data on screen)<br />
Table 6-31 : Font Code for User-Created<br />
Region Size Code and Range Capacity<br />
CGRAM<br />
512 bytes<br />
Half-Size : 8F00h ~ 8F1Fh<br />
Full-Size : 9F00h ~ 9F0Fh<br />
32 Half-Size chars<br />
16 Full-Size chars<br />
DDRAM1<br />
9.6 Kbytes<br />
Half-Size : 8000h ~ 8E27h<br />
Full-Size : 9000h ~ 9E13h<br />
600 Half-Size chars<br />
300 Full-Size chars<br />
DDRAM2<br />
9.6 Kbytes<br />
Half-Size : 8000h ~ 8E27h<br />
Full-Size : 9000h ~ 9E13h<br />
600 Half-Size chars<br />
300 Full-Size chars<br />
6-11-1 Create Font in CGRAM<br />
The CGRAM is a 512Byte RAM, so it could create 32 Half-Size or 16 Full-Size characters. The<br />
Table 6-32 is the font code mapping table in CGRAM. Note the font codes were fix in <strong>RA8806</strong>. And<br />
the Font# was defined in Bit[3:0] of REG[CURY].<br />
Table 6-32 : CGRAM Font Code Mapping Table<br />
Font#<br />
Code<br />
0<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
Half-Size<br />
8F00 8F01 8F02 8F03 8F04 8F05 8F06 8F07 8F08 8F09 8F0A 8F0B8F0C8F0D8F0E<br />
8F0F<br />
Full-Size<br />
9F00<br />
9F01<br />
9F02<br />
9F03<br />
9F04<br />
9F05<br />
9F06<br />
9F07<br />
Font#<br />
Code<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
Half-Size<br />
8F10 8F11 8F12 8F13 8F14 8F15 8F16 8F17 8F18 8F19 8F1A 8F1B8F1C8F1D8F1E<br />
8F1F<br />
Full-Size<br />
9F08<br />
9F09<br />
9F0A<br />
9F0B<br />
9F0C<br />
9F0D<br />
9F0E<br />
9F0F<br />
<strong>RAiO</strong> TECHNOLOGY INC. 84/193 www.raio.com.tw
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