2–34
Chapter 2: Board Components
General User Interfaces
Stratix III 3SL150 Development Board
Altera Corporation
shows pin definitions, and is an excerpt from the Lumex data sheet.
f
For more information such as timing, character maps, interface guidelines, and
related documentation, visit
shows a functional block diagram of the Lumex LCD display device.
1
The particular model used does not have a backlight and the LCD drive pin is not
connected.
Table 2–33. Character LCD Display Pin Definitions
Pin Number
Symbol
Level
Function
1
V
DD
—
Power supply
5 V
2
V
SS
—
GND (0V)
3
V
0
—
For LCD drive
4
RS
H/L
Register select signal
H: Data input
L: Instruction input
5
R/W
H/L
H: Data read (module to MPU)
L: Data write (MPU to module)
6
E
H, H to L
Enable
7~14
DB0~DB7
H/L
Data bus, software selectable 4- or 8-bit mode
Figure 2–10. LCD Display Block Diagram
Block Diagram
16 X 2, 1/16 Duty, 1/5 Bias
E
SEC 80
COM 16
R/W
RS
DB[7:0]
LCD
Panel
LCD
Controller
LSI
and
Driver
LED Backlight
A
K
V
DD
V
SS
V
O