ra8806 RAIO Technology Inc., ra8806 Datasheet - Page 71
ra8806
Manufacturer Part Number
ra8806
Description
Two Layers Character/graphic Lcd Controller
Manufacturer
RAIO Technology Inc.
Datasheet
1.RA8806.pdf
(184 pages)
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Preliminary Version 1.2
RAiO
TECHNOLOGY INC.
6-10-1-2 Half Size Font
The RA8806 provide an Auto-Write feature to fill a data to all of the DDRAM. At first, user writes the
data to Register PNTR then initials the Auto-Write function(Register FNCR Bit-3). RA8806 will fill the
data to DDRAM in very short time. Normally this feature is used to clear screen or want to fill fixed
pattern or background on screen.
RA8806 built in 4 half-size font blocks, each block contains 0h ~ FFh(256) characters, and could be
selected by register REG[F0h] Bit[1:0]. By setting the REG[F0h] Bit[1:0], the corresponding table is
selected. About the font table, please reference Appendix C. The RA8806 also supports ISO8859
standard (ISO - International Organization for Standardization). Which can fully supports most Latin
characters set. REG[F0h] Bit-7 is the option of RA8806 default coding or ISO8859 mode. In this
mode, RA8806 internal ASCII table1 ~ 4 is mapping to the coding of ISO8859-1 ~ ISO8859-4.
WLCR
FNCR
Reg.
Reg.
D7 D6 D5 D4 D3 D2 D1 D0
1 1
Figure 6-42 : The Mapping of Display Data to LCD Panel
Display Data RAM
Bit_Num
Bit_Num
1 0 0 1 1
Bit [1:0]
Bit 3
Bit 7
Bit 2
Text Mode Selection
ISO8859 mode
ASCII Mode Enable
ASCII Blocks Select
0
Table 6-22
Table 6-23
Description
Description
71/184
Two Layers Character/Graphic LCD Controller
0
1
2
Display On LCD
Segment
3
4
5
Reference
Reference
REG[00h]
REG[F0h]
6
7 …..
www.raio.com.tw
RA8806
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