2–30
Chapter 2: Board Components
General User Interfaces
Cyclone III 3C120 Development Board Reference Manual
© March 2009 Altera Corporation
7-Segment Displays
This section discusses the following two on-board displays:
■
User 7-segment display
■
Power 7-segment display
User 7-Segment Display
Board reference U30 is a four-digit, user-defined, 7-segment display that is labeled
User Display. Each segment’s LED driver input signals are multiplexed to each of the
four digits and a minus sign. A small HDL code snippet continuously writes to each
of the four segments so that they appear constantly illuminated.
Table 2–33
lists the 7-segment display pin-out.
Table 2–33.
7-Segment Display Pin-Out
Board
Reference
Description
I/O Standard
Schematic
Signal Name
Cyclone III
Device
Pin Name
U30 pin 12
User-defined display signal
1.8 V
SEVEN_SEG_A
AD5
U30 pin 11
User-defined display signal
1.8 V
SEVEN_SEG_B
A3
U30 pin 3
User-defined display signal
1.8 V
SEVEN_SEG_C
C4
U30 pin 8
User-defined display signal
1.8 V
SEVEN_SEG_D
D4
U30 pin 9
User-defined display signal
1.8 V
SEVEN_SEG_E
E5
U30 pin 7
User-defined display signal
1.8 V
SEVEN_SEG_F
D5
U30 pin 5
User-defined display signal
1.8 V
SEVEN_SEG_G
AE6
U30 pin 2
User-defined display signal
1.8 V
SEVEN_SEG_DP
AD4
U30 pin 13
User-defined display signal
1.8 V
SEVEN_SEG_SEL1
B3
U30 pin 1
User-defined display select signal
1.8 V
SEVEN_SEG_SEL2
C5
U30 pin 10
User-defined display select signal
1.8 V
SEVEN_SEG_SEL3
E4
U30 pin 4
User-defined display select signal
1.8 V
SEVEN_SEG_SEL4
C3
U30 pin 6
User-defined display select signal
1.8 V
SEVEN_SEG_MINUS
G19
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from