RA8860
Version 1.1
80x2 Dots 16-Color LCD Driver
1. Overview
The RA8860 is a LCD Driver & Controller for Field Sequential Liquid Crystal Display (FSLCD) systems. It
contains 80 segment and 2 common driver circuits. This chip is connected directly to a MCU, support 3-wire,
4-wire serial peripheral interface (SPI) and I2C interface, display data can stores in an on-chip display data
RAM of 640bits. It performs display data RAM read/write operation with no external operating clock to
minimize power consumption. In addition, it also can produce LED driving signals to generate RGB LED
backlight system if necessary.
2. Features
80Seg x 2Com Drive Outputs
Supports Serial I
2
C, 3/4-wires MCU Interface
Supports 8 or 16 Colors Display
Build-in 640-bits Display RAM
Duty: Static, 1/2 Duty
Build-in Voltage Booster(4X) and Voltage
Follower for LCD Driver
Supports Blinking Mode
Build-in RGB LED Driver for LED and Max.
80mA Sink Current for each Driver
Build-in RC Oscillator
Supports Multi FSLCD Drivers (Master / Slave
Mode)
Available package type: LQFP-128pin, Bare die
Supply Voltage: 2.7~5.5V
Ordering Information
Parts Number
RA8860
RA8860L4N
Package Type
Bare Die
LQFP-128pin
3. Block Diagram
SEG[79:0]
COM[1:0]
VCM
VCM_IN
V0
VR
VREF
VOUT
C[3:1]P
C[2:1]N
AVDD
AGND
VDD
VDDP
GND
GNDP
LCD
BIAS
Segment DRV
Common DRV
Reset
Regulator
/RST
CORE
OSC
4X
Boost
SRAM
LED
Driver
CLK_SEL
CL
LED-R
LED-G
LED-B
Serial MCU I/F
CLK_OUT
SYNC
TP[6:0]
MS,
IF_SEL[1:0]
SA[2:0]
SCL, /CS,
RS_SDI
SDA_SDO
RAiO
TECHNOLOGY INC.
2/7
www.raio.com.tw
RAIO [ RAIO TECHNOLOGY INC. ]
