ra8806 RAIO Technology Inc., ra8806 Datasheet - Page 32

• Manufacturer Part Number: ra8806
• Description: Two Layers Character/graphic Lcd Controller
• Manufacturer: RAIO Technology Inc.

Preliminary Version 1.2
RAiO
6-2
TECHNOLOGY INC.
The main function of Driver Interface is to generate Frame (Pin “FR”), Latch Pulse (Pin “LP”), “YD” and
Data Bus (LD[7:0]) for external LCD driver IC. RA8806 could both support 4-bits and 8-bits LCD driver
interface. Pin “DW” is for LCD driver data bus selection. If “DW” pulls high then 8-bits LCD driver is used.
If pull low then 4-bits LCD driver is used. Figure 6-8 is the LCD interface of RA8806.
Figure 6-9 is the timing waveform of RA8806 and LCD Driver. Users could also refer to Section 4-4
“LCD Driver Interface” for LCD driver pin description.
Driver Interface
(D a ta )
X C K
X C K
L D
F R
Y D
L P
F R
Y D
L P
RA8806
LD[7:0]
Figure 6-9 : The Waveform of RA8806 and LCD Driver
ZDOFF
Figure 6-8 : The Interface of RA8806 and LCD Driver
XCK
YD
FR
LP
1 st lin e
FLM
M
LP
/DISPOFF
CP
D[7:0]
LCD Driver
32/184
Two Layers Character/Graphic LCD Controller
Common Signals
Segment Signals
F o r 3 2 0 x 2 4 0 : T o ta l 2 4 0
L P fo r e a c h F ra m e
LCD Panel
Dot Matrix
STN
www.raio.com.tw
RA8806