Altera Stratix III Development Board - Manual (Page 42)

2–34 Chapter 2: Board Components
General User Interfaces
Stratix III 3SL150 Development Board May 2013 Altera Corporation
Reference Manual
Table 2–33 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
www.lumex.com .
Figure 2–10 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