Segment displays, Segment displays –30, User 7-segment display –30 – Altera Cyclone III Development Board User Manual
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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.
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