RA8808 Datasheet, PDF (2/7 Pages) RAIO Technology Inc. – 128x64 Driver for Dot Matrix LCD Specification

Preliminary Version 1.0
RA8808
128x64Driver for Dot Matrix LCD
1. General Description
The RA8808 is a LCD driver LSI with 128(Segment) x 64(Common) driver output for dot matrix liquid crystal
graphic display systems. This device consists of the display RAM,128-bit segment drivers, 64-bit common
drivers and decoder logic. It has the internal display RAM for storing the display data transferred from an 8-
bit 8080/6800 micro controller or 3-wire-SPI/IIC controller and generates the dot matrix liquid crystal driving
signals corresponding to stored data.
2. Features
‹ Dot matrix LCD segment driver with 128
channel output, and common driver with 64
channel output.
‹ Internal timing generator circuit for dynamic
display.
‹ Selection of master/slave mode for combine
two RA8808 controller to support 256x64 dot
Matrix.
‹ Applicable LCD common duty: 1/48, 1/64.
‹ Support 6800/8080 8-bit parallel MPU interface.
‹ Support 3-wires SPI and IIC serial MPU
interface.
‹ Two 512 bytes (4096-bits) Display RAM
‹ LCD driving voltage: 8V ~17V
‹ Built-in 2X~4X Voltage Booster and Voltage
Follower
‹ Power supply voltage: +2.7V ~ 5.5V
‹ High voltage CMOS process
‹ Bare gold bump chip available
3. Block Diagram
M CL FRM
DB7~0
RS
E
RW
CS1
CS2B
CS3
CS4B
PS
MODE
MS
DS
SHL
ADC
RSTB
RA
RB
Register
Block
MPUIF
Block
512x8
Display RAM
A
Scan
Block
SEG
Drivers
512x8
Display RAM
B
RC
Oscillator
Power Circuit &
Test
COM
Drivers
CLK_OUT TEST[2~0]
VOUT
C[2:1]N
V[4:0]A C[3:1]P
V[4:0]
SEG127~0
COM63~0
RAiO TECHNOLOGY INC.
2/7
www.raio.com.tw