Article ID: 000074500 Content Type: Troubleshooting Last Reviewed: 06/06/2025

On EPCQ-A devices, may the pins labeled “N.C” be connected to ground?

Environment

    Intel® Quartus® Prime Pro Edition
BUILT IN - ARTICLE INTRO SECOND COMPONENT
Description

Yes. In the EPCQ-A Serial Configuration Device Datasheet (version 2019.10.01) section 1.4.2, a note states that "N.C pins must be left unconnected." This is incorrect. The pins labeled "N.C" are not internally connected, and may be either not connected on the board or connected to ground. Connecting these pins to other signals or voltages has not been characterized or verified, and so is not recommended.

Resolution

The note in the datasheet is scheduled to be corrected in a future document revision.

Related Products

This article applies to 4 products

Intel® FPGA Configuration Device EPCQ-A
Intel® Stratix® 10 FPGAs and SoC FPGAs
Intel® Arria® 10 FPGAs and SoC FPGAs
Intel® Cyclone® 10 GX FPGA

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