RA8816
Preliminary Version 1.6
144x65 Character/Graphic LCD Driver
1. General Description
The RA8816 is a Dot-Matrix LCD Driver that supports both character and graphic mode. It built-in a
256Kbyte character ROM that consists of Chinese, English and ASCII fonts. The embedded 1170Byte
display RAM supports up to 144x65 dots LCD panel. The RA8816 also provides a scrolling buffer memory
for scrolling functions. It supports up, down, left and right scrolling features, and all of the scrolling is execute
by hardware.
In character mode, the RA8816 supports Chinese BIG5 code or GB code. The system(MPU) does not need
take a lot of time to show the Chinese font in graphic mode. It also provides small ASCII(8x8) and big
ASCII(8x16) font for English character, Japanese, European and Latin. The RA8816 integrates much
powerful hardware that including Contrast adjustment, 4x5 Key-Scan, eight General Purpose I/O and EL
Backlight signals for EL driver.
The RA8816 is a high integration chip of LCD Controller. It reduce a lot of time for system develop, and save
much cost for hardware system that due to it provides many features for related LCD display application.
2. Feature
Support both Character and Graphic Mode
Support 1/65 Duty, 1/9~1/5 Bias Panel
Built-in 2X~4X(Voltage Booster), Voltage
Regulator, Voltage Follower
Eight General Purpose I/O
Built-in 4x5 Key-scan Circuit
Support Horizontal/Vertical Scrolling Functions
Built-in 256Byte SRAM for Create Font
Provide Signals for EL Driver
Support 8080/6800 8/4-bit Parallel Interface,
3-Wire/4-Wire Serial Interface, IIC interface
Built-in 256KB Font ROM: Chinese, English,
ASCII, Japanese, Latin, Latin-ext A, Latin-ext
B
Support ASCII 8x8/8x16 Half Size Font,
16x16 Full Size Chinese Font
Support Maximum 144Seg x 65Com LCD
Panel. 4 x 9 Chinese Fonts(16x16), or 8 x 18
English Fonts(8x8)
Built-in 1170 Bytes Display RAM and 450Byte
Scrolling Buffer
Provide 32-Steps Contrast Adjuster
Build-in RC Oscillator
Voltage Operation: VDD Æ 2.7~3.8V
Package: Gold Bump Die
3. Block Diagram
M PU
LCD Panel
R A8816
EL Back
Light Driver
GPIO
4 x 5
Key Scan
Figure 3-1: System Block
RAiO TECHNOLOGY INC.
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www.raio.com.tw
RAIO [ RAIO TECHNOLOGY INC. ]
