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PmodLED™ Reference Manual
Revised December 17, 2015
This manual applies to the PmodLED rev. A
Overview
The Digilent PmodLED contains 4 individual user LEDs that are driven through logic-level transistors.
Features include:
4 high-bright LEDs
Required driving current of less than 1 mA
Easy-to-see logic level indicators
The PmodLED.
1
Functional Description
The PmodLED utilizes logic-level transistors to light up four individual high-bright LEDs. Each LED can be turned on
through the use of less than 1 mA of current, making this Pmod ideal for users needing small indicator lights.
2
Interfacing with the Pmod
The PmodLED communicates with the host board via the
GPIO protocol
. A logic high level turns on the LED and
a logic low signal turns off the LED.
DOC#: 502-076
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
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PmodLED™ Reference Manual
J1 Connector
Pin
1
2
3
4
5
6
Signal
LD0
LD1
LD2
LD3
GND
VCC
Description
LED 0
LED 1
LED 2
LED 3
Power Supply Ground
Positive Power Supply
P1
P2
P3
Table 1. Pinout description table.
P4
GND
Vcc
Figure 1. LED module circuit diagram.
It is recommended that Pmod is operated at 3.3V.
3
Physical Dimensions
The pins on the pin header are spaced 100 mil apart. The PCB is 0.8 inches long on the sides parallel to the pins on
the pin header and 0.8 inches long on the sides perpendicular to the pin header.
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
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