ra8816 RAIO Technology Inc., ra8816 Datasheet - Page 44

• Manufacturer Part Number: ra8816
• Description: 144x65 Character/graphic Lcd Driver
• Manufacturer: RAIO Technology Inc.

Preliminary Version 1.6
7. Display Functions
RAiO TECHNOLOGY INC.
7-1 Text Mode
The Chinese display is operating at text mode. So if the RA8816 received two Chinese codes(BIG5 or
GB) then the mapped font will show on the cursor position. Because each Chinese code including two
bytes data, therefore the MPU has to send the code twice – High byte and Low byte. For English or
Numeric, only one byte is need. The maximum supports panel size of RA8816 is 144x65dots. So in text
mode it could show 9x4 Chinese fonts and 18x8 English fonts.
The register MWMR is used to setup the font size for display. The user can also select the different
display mode such as bold, inverse or normal mode in this register.
The RA8816 built-in a 256KB Font ROM that includung Traditional Chinese or Simpled Chinese,
English, Japaness, ASCII, Europen and Latin(Latin-ext A, Latin-ext B). In text mode, it supports full-
size font(Chinese or English) display or half-size(English) display. The full-size font is consist of 16x16
bit map. And half-size is consist of 8x16 or 8x8. Refer to the following Figure 7-1:
16x16 Pixel
Figure 7-1: Full-Size and Half-Size Font
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8x16 Pixel
144x65 Character/Graphic LCD Driver
8x8 Pixel
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RA8816