Version 2.1

Two Layers Character/Graphical LCD Controller

RA8803/8822

1. General Description

The RA8803/RA8822 is a Dot-Matrix LCD controller which support both text and graphics mode. It built-in

two Display RAM for two layers display, and an embedded 512Kbyte character ROM that consists of

Chinese, English and ASCII fonts. In text mode, the RA8803/8822 support Chinese BIG5 code or GB code.

The system (MPU) does not need take a lot of time to show the Chinese font in graphics mode.

The RA8803/8822 support 8080/6800 like MPU interface, and also provide 4-Bit or 8-Bit data bus. For LCD

driver interface, it support the most of LCD Driver in the world. The RA8803 support maximum LCD panel is

320x240 dots, and RA8822 is 240x160 dots. If use extension mode then the RA8803 support up to

640x240(320x480) dots Panel, and RA8822support up to 480x160(240x320) dots. The embedded 10-Bit

ADC and Analog Switch provide the 4-wires Touch Panel interface. The 5-Bit DAC provides the contrast

control of the LCD panel. The RA8803/8822 also provide an 8x8 Key-Scan interface that reduces the

loading of MPU. Except for 16x16 Chinese font size, RA8803/8822 also provides a great choice of different

font sizes, such as 32x32, 48x48, or even 64x64. The embedded 512Byte SRAM allows user build their own

characters or symbols for convenience.

The RA8803/8822 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 Text and Graphics Mode

Support 2-Layers Display(AND, OR, NOR,

XOR), Built-in Two 9.6K/4.8Kbyte Display

Data RAM

Dual Page Support Maximum

320x240(RA8803) Or 240x160(RA8822)

Dots Panel

Extension Mode RA8803: 640x240(320x480)

RA8822: 480x160(240x320) Dots

Support 4/8Bit of 6800/8080 MPU Interface

Built-In 8x8 Key-Scan Circuit

Support Horizontal and Vertical Scrolling

Support 4/8Bit LCD Driver Interface

Built-In 512KByte Font ROM,

_ RA8803/8822-T : 13,094 Traditional

Chinese Fonts

_ RA8803/8822-S : 7,602 Simple Chinese

Fonts

Built-In 512Byte SRAM for Create Font

Font Size Adjustable: 32x32, 48x48 or 64x64,

and V/H Mixed Mode

Support Full Size(16x16) and Half Size(8x16)

Mode

Font ROM Readable

Support Align Function

Support 4 Gray Layer Display

Support Bold Font and Line Distance Setting

Built-In 10-Bit ADC for Touch Panel

Built-In 5-Bit DAC for Contrast Control

Clock: 32KHz X’tal or External Clock

Built-In a 5V to 3.3V DC-DC Converter

Power Supply: 2.4~5V

Package: Die，PQFP/LQPF 100Pins

2/8

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