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1300 Henley Court Pullman, WA 99163 509.334.6306 www.digilentinc.com 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. Copyright Digilent, Inc. All rights reserved. DOC : 502-076 Page 1 of 2 Other product and company names mentioned may be trademarks of their respective owners. PmodLED Reference Manual Pin Signal Description P1 1 LD0 LED 0 2 LD1 LED 1 P2 3 LD2 LED 2 4 LD3 LED 3 5 GND Power Supply Ground P3 6 VCC Positive Power Supply P4 Table 1. Pinout description table. 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. Page 2 of 2 Other product and company names mentioned may be trademarks of their respective owners. J1 Connector