Push-button switches, Individual leds, Push-button switches –20 individual leds –20 – Altera Nios Development Board User Manual
Page 28
1–20
Altera
Corporation
Nios Development Board Reference Manual, Stratix Edition
September 2004
Push-Button Switches
Push-Button
Switches
SW0 – SW3 are momentary-contact push-button switches and are used to
provide stimulus to designs in the Stratix device. See
. Each
switch is connected to a Stratix general-purpose I/O pin with a pull-up
resistor as shown in
. The Stratix device pin will see a logic 0
when each switch is pressed.
Individual LEDs
This Nios development board provides eight individual LEDs connected
to the Stratix device. See
. D0 – D7 are connected to general
purpose I/O pins on the Stratix device as shown in
. When the
Stratix pin drives logic 1, the corresponding LED turns on.
Figure 1–17. SW0 – SW3 Push Button Switches & Individual LEDs
Table 1–4. Push Button Switches Pin Out Table
Button
SW0
SW1
SW2
SW3
Stratix Pin
W5
W6
AB2
AB1
Table 1–5. LED Pin Out Table
LED
D0
D1
D2
D3
D4
D5
D6
D7
Stratix Pin
H27
H28
L23
L24
J25
J26
L20
L19