2–36
Chapter 2: Board Components
General User Interfaces
Cyclone III 3C120 Development Board Reference Manual
© March 2009 Altera Corporation
Figure 2–9
is an excerpt from the OPTREX data sheet showing the control chip in the
LCD module. The control chip is from New Japan Radio Corporation (part number
NJU6676), and
Figure 2–9
illustrates the functional block diagram of the display
driver.
f
For more information, contact Optrex American at
www.optrex.com
or New Japan
Radio at
www.njr.co.jp/index_e.htm
.
Figure 2–9.
Graphics LCD Functional Block Diagram of Display Driver
Segment Dri
v
ers
Common
Dri
v
ers
Shift
Register
Shift
Register
Common
Dri
v
ers
Display Data RAM
65 X 132 =
8
,5
8
0-
b
it
Display Data Latch
Lo
w
Address Deocder
Line Address Deocder
Col
u
mn Address Decoder
V
ss
V
DD
Oscillator
B
u
s Holder
B
u
sy Flag
Instr
u
ction
Decoder
Stat
u
s
V
oltage
Follo
w
ers
V
oltage
Reg
u
lator
V
oltage
Con
v
erter
M
u
ltiplexer
Line Co
u
nter
Initial Displa
y Line
Common Direction
P
age Address Register
Col
u
mn Address Co
u
nter
Col
u
mn Address Register
MPU Interface
Reset
Common
Timing
Display Timing
V
R
C1+/C1-
C2+/C2-
C3-
V
ss2
V
o
u
t
V
1 to
V
6
Internal
Po
w
er
Circ
u
its
C0 - - - C21
C63 - - - C32
MS
S0 - - - S131
FR
FRS
CL
CLS
DOF
OSC1
OSC2
D5 to D0
P/S
D6
(SCL)
D7
(SI)
C
8
6
A0
CS2
CS1
W
R
Stat
u
s
Internal B
u
s Line
RD
RES
COMM
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