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Version 1.1 Brief Specification
RA8872
Character/Graphic TFT LCD Controller
3. Block Diagram
DB[0:7]
RD# / EN
WR# / RW#
CS#
RS
C86
WAIT#
INT#
XI
XO
RST#
XP
XN
YP
YN
MPU I/F
Block
Register
Block
Internal
DPRAM
CGROM
Font
Engine
OSC/
PLL
Power
Control
Geometric
Speed-up
Engine
ADC
4-wires
Touch Panel
Controller
2D-BTE
Engine
Pattern/
Cursor
Scroll
Engine
TCON
PWM
GPIO
Test
Figure 3-1 : Internal Block Diagram
PDAT[0:15]
HSYNC
VSYNC
PCLK
DE
PWM1
PWM2
GPIO[0:5]
TEST[0:2]
8bits
8080/6800 MPU
RA8872
TFT Driver
Booster
(Back-light Adj.)
4-Wires
Touch Panel
Crystal
Figure 3-2 : System Block Diagram
TFT Panel
RAiO TECHNOLOGY INC.
3/7
www.raio.com.tw