Cyclone® 10 LP FPGA Evaluation Kit User Guide

ID 683580
Date 11/18/2025
Public
Document Table of Contents

4.9.3.3. Arduino Power

There are several power rails on the Arduino connectors.

  • IOREF: 3.3 V for digital IOs. It must be 3.3 V. 5 V is forbidden as it may damage devices on the board.

  • VCC_3.3V: 3.3 V power generated by the Cyclone® 10 LP FPGA Evaluation Board.

  • VCC_5V_AR1/2: 5 V power from the Cyclone® 10 LP FPGA Evaluation Board.

  • ARDUINO_AREF: Reserved analog reference voltage. Care must be taken that the range can be 0 ~3.3 V. 5 V is forbidden.

When using Arduino connector, USB may not provide sufficient power so we suggest you use external adapter connector (J12) to power up the board.

Arduino UNO* R3 did not specify limitation of output current capability. The following table shows the maximum output current for the Cyclone® 10 LP FPGA Evaluation Board.

Table 20.  Arduino Power Output Capability
Power Rail Output Pin Location Maximum Current Note

VCC_5V_AR1

VCC_5V_AR2

J4.5

J18.2

0.5 A

5 V output capability to Arduino Shield, shared with VCC_5V (depends on the power adapter specification)

VCC_3.3V J4.4 0.05 A

VCC_3.3V output capability to Arduino Shield

IOREF J4.2 0.05 A

Connected to VCC_3.3V