Leds - Xilinx Spartan-3 User Manual

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LEDs

The Spartan-3 Starter Kit board has eight individual surface-mount LEDs located above
the push button switches, indicated by
through LED0. LED7 is the left-most LED, LED0 the right-most LED.
FPGA connections to the LEDs.
Table 4-3: LED Connections to the Spartan-3 FPGA
The cathode of each LED connects to ground via a 270Ω resistor. To light an individual
LED, drive the associated FPGA control signal High, which is the opposite polarity from
lighting one of the 7-segment LEDs.
20
LD7
LED
FPGA Pin P11
www.xilinx.com
1-800-255-7778
in Figure
12
LD6 LD5 LD4
P12 N12 P13
Chapter 4: Switches and LEDs
1-2. The LEDs are labeled LED7
Table 4-3
LD3 LD2 LD1
N14 L12 P14
Spartan-3 Starter Kit Board User Guide
UG130 (v1.1) May 13, 2005
shows the
LD0
K12