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PmodLED™ Reference Manual
Revised May 26, 2016
This manual applies to the PmodLED rev. A
DOC#: 502-076
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
Page 1 of 2
Overview
The Digilent PmodLED contains 4 individual user LEDs that are driven through logic-level transistors.
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.
The PmodLED.
4 high-bright red LEDs
Clearly visible logic level indicators
Required driving current of < 1 mA
Small PCB size for flexible designs 0.8“ ×
0.8” (2.0 cm × 2.0 cm)
6-pin Pmod connector with GPIO interface
Follows Digilent Pmod Interface
Specification Type 1
Features include:
PmodLED™ Reference Manual
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
Page 2 of 2
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.
Pin
Signal
Description
1
LD0
LED 0
2
LD1
LED 1
3
LD2
LED 2
4
LD3
LED 3
5
GND
Power Supply Ground
6
VCC
Positive Power Supply
GND
Vcc
J1 Connector
P1
P2
P3
P4
Figure 1. LED module circuit diagram.
Table 1. Pinout description table.
