ra8825 RAIO Technology Inc., ra8825 Datasheet - Page 2

• Manufacturer Part Number: ra8825
• Description: 128x33 Dot Matrix Lcd Driver
• Manufacturer: RAIO Technology Inc.

Preliminary Version 1.1
RAiO TECHNOLOGY INC.
Support 8080/6800 8/4-bit Parallel Interface and
3-wire/4-wire Serial Interface
Support Maximum 128Seg x 33Com LCD Panel.
Built-in 528 Bytes Display RAM and 354Byte
Scrolling Buffer
Built-in 2X~3X(Voltage Booster), Voltage
Regulator, Voltage Follower
Support 1/33 Duty, 1/6~1/4 Bias Panel
The RA8825 is a Dot-Matrix LCD Driver. The embedded 528Byte display RAM supports up to 128x33 dots
LCD panel. The RA8825 also provides a scrolling buffer memory for scrolling functions. It supports up, down,
left and right scrolling features, and all of the scrolling functions are execute by hardware.
The RA8825 integrates many powerful hardware that including Contrast adjustment, 4x5 Key-Scan, eight
General Purpose I/O and EL Backlight signals for EL driver. The RA8825 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.
3. System Block Diagram
1. General Description
GPIO
MPU
4. Pad and Package
RA8825
Icon
#N
2. Feature
COG Module
RA8825
128x32
Key Scan
FPC
2/6
4 x 5
COG
Eight General Purpose I/O
Built-in 4x5 Key Scan Circuit
Support Horizontal/Vertical Scrolling Functions
Provide Signals for EL Driver
Provide 32-Steps Contrast Adjust
Build-in RC Oscillator
Voltage Operation : 2.6~3.6V
Package : Gold Bump Die
#1
LCD Panel
EL Back
Driver
Light
128x33 Graphic LCD Driver
www.raio.com.tw
RA8825